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Trek 3900

MSRP $ 340.00
# of Reviews 33
Average Rating 3.79/5
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Submitted by Andrew a Weekend Warrior from Almaty Kazakhstan
Date Reviewed: January 27, 2010
Duration Product Used:More than 3 years
Price Paid: $350.00
Strengths:Good price, strong front suspension, good black color
Weaknesses:Bad choise for city dert, bad for jumping
Bottom Line:It's may be Your first bike for MTB. First expirience for guys with no ambitions :-)
Value Rating:4Overall Rating:3

Submitted by nickav21 a Cross Country Rider from Bartlett, TN
Date Reviewed: December 24, 2009
Favorite Trail:Stanky Creek
Duration Product Used:3 months
Price Paid: $560.00
Purchased At:Bikes Plus Bartlett
Strengths:Pretty light-weight frame, good component mix for the price, compared to other bikes at that price range, totally dominates when it comes to components, etc
Weaknesses:The tires SUCK, plastic pedals
Similar Products Used:Gary Fisher Wahoo
Bike Setup:Stock except for WTB saddle and Mallet 1 pedals
Bottom Line:Great bike for the price. I've only had it for about 3 months but have ridden it pretty hard almost every day since I got it. It really impresses me every time I take it out! At this price it's easy to justify upgrading when stuff breaks too, so I'm not bothered by the fact that the components are not top of the line.

I gave it 4 flamin chilis for overall rating only because the saddle and pedals are junk! No biggie though!

Value Rating:5Overall Rating:4

Submitted by febutterfield a Cross Country Rider from Havelock
Date Reviewed: October 9, 2009
Favorite Trail:ButterRun
Duration Product Used:3 months
Price Paid: $420.00
Purchased At:Bike Depot Havelock
Strengths:Affordable, Solid, Exceeded my expectations, The warranty is worth the price of the bike.
Weaknesses:Heavy, Fork isn't the best, Pedals suck
Similar Products Used:Raleigh MCC-8
Bike Setup:Stock except Crank Bro's candy pedals.
Bottom Line:My van broke down so I bought this bike to avoid the immediate stress of buying a car. I've ridden it back and forth to work everyday except weekends and haven't had any issues besides a few flats from ridding in the gutters(stay out of these mine fields).
I bought the bike knowing it wasn't the top of the Trek line and really didn't expect much. I planned on just keeping it as a filler bike until it was in my budget to upgrade to something closer to my dream bike in the 2K price range. Yeah... guess I don't dream that big.
I didn't expect much, but over the last few months I've been pretty happy with what I've got for the amount spent. It's nice having the Trek warranty to keep your mind at ease also.
The bike:
Looks: I'm sure this is a personal taste thing and shouldnt' have much impact on whether you buy a bike or not, but I love the color scheme and hte attention to details is great.

Frame: Seems almost bomb proof. I've got a feeling you'd almost have to smash through the wheels to cause the frame much stress.

Components: I wasn't impressed with any of them from the beginining. Now that I've been ridding it for a few months straight I don't have any complaints either.

Weight: It's heavy. I don't think it'd be a great investment trying to lighten it up. If the stuff breaks I suppose you could upgrade to lighter equipment.

I took it down the local trail just to see how it felt off road. The trail out here is pretty beat up. Besides having a difficult time maintaining contact with the stock pedals it felt pretty good. Unless you just plan on ridding to the corner store changing the pedals is a must. I'm pretty sure they just stick them on there so you could test ride the thing.
It's been my main mode of transportation for the last few months. Around town it handles great. The ridding position is comfortable and doesn’t seem to take a whole lot of body English to navigate curbs etc. I ride up and over some pretty big curbs that on my previous mountain bike I would've been eating. When I first started ridding this bike I expected to eat rocks a few times but this bike seems to just roll up and over anything with out to much punishment. This probably is due to the ridding position. The down side. The geometry doesn’t seem to efficient for long haul rides where you want the more cross country racer position and speed. For the price and its intended use...I think Trek did a good job.

Who should buy it:
Somebody that needs a good bike and on a limited budget, or new bikers that want to try out mountain biking with out emptying the piggy bank.

Who shouldn't buy it: Anyone that needs more of a bike than $400 is going to buy.

The bottom line: For a few more dollars than your department store special, you get a solid bike with a great warranty and your local bike shop to take care of you and your bike. In my case; it's few hundred dollars well spent.
Value Rating:5Overall Rating:4

Submitted by danielnc06 a Weekend Warrior from charlotte, nc
Date Reviewed: September 14, 2009
Duration Product Used:1 Year
Strengths:DURABLE, controls easily on trails, rides smooth, wears good, fits pretty good, high and low gearing is good, shifts great once adjusted
Weaknesses:a bit heavy, but expected in this price range. i have some repeating flats with stock tires(25$ fix), stock seat is hard.
Bike Setup:WTB pedals w/clips, new F/R tires, titec bar ends, new grips, new seat.
Bottom Line:a 6'4" 240lbs friend gave it to me. his last wreck bent the handle bars and warped the wheel slightly. he rode this bike rough and it's still strong. i replaced the bars, seat, tires, trued the wheels and adjusted the derailers. and it shifts great. the derailers aren't bad components (shimano Acera, which are the same as a friends 1600$ Kona). They shift great. its a great beginner bike that you can't mess up. it could be lighter but its normal in this bikes class i guess. like any mtn bike, general maintainence and tune-ups are inevitable.
Value Rating:5Overall Rating:4

Submitted by piotrek1313 a Weekend Warrior from Palos Hills IL US
Date Reviewed: July 6, 2009
Duration Product Used:2 Years
Price Paid: $450.00
Purchased At:Chicagoland Bicycle
Strengths:This bike has 3 strengths; the price, weight, and frame. The price of this bike was just right, I think that if you are a beginner you cant ask for a better bike. The bike is heavier than I would like, but looking at the components it will be plenty light for your average rider. The frame is versatile enough that you could throw upgrades on it as you advance. I got mine with non-disk brakes and after a year of riding I am looking at disk brakes, new wheels and new pedals.
Weaknesses:Since I consider myself a novice mountain biker, I don't do any jumps and don't go on extreme trails, I think that the pedals and the wheels should definitely be factory upgraded. I find my feet constantly slipping off the pedals when its a little wet out, and during light mud you can really do some damage. After a year of off road riding I noticed that my wheels are getting a little crooked, I was a little surprised since once again I don't hit any jumps and stick to beginner trails.
Similar Products Used:I used a cheap huffy before this bike.
Bike Setup:Stock Trek 3900.
Bottom Line:This bike is ideal for someone who wants to tackle the beginner trails. If a dry mix of dirt,sand, and gravel is your ideal terrain than don't hesitate to buy. But once you start getting away from that you will need to throw some money at this bike so it can keep up. Remember that the pedals and wheels are probably the first things to go followed by a better fork.
Value Rating:4Overall Rating:3

Submitted by acuraman07 a Racer from Edmonton,Alberta,Canada
Date Reviewed: July 1, 2009
Favorite Trail:none
Duration Product Used:More than 3 years
Price Paid: $350.00
Purchased At:United Cycle
Strengths:Paddle shifters, adjustable front suspension,17 inch tires, the treads,the frame
Weaknesses:ackward ratio shifting when in certain gears(solution is to change gears or change ratios), could use larger tires to improve turning
Bottom Line:It's a great bike to just mess around with especialy cause of the adjustable suspension(off roading and on). The shifts are quick,smooth and shifting the ratios take some time to get use to cause they tend to grind when in a certain gears. The frame is light which makes it easy to get up to speed.
Value Rating:5Overall Rating:4

Submitted by ozzy55 a Cross Country Rider from Ft. Knox, KY, USA
Date Reviewed: June 9, 2009
Favorite Trail:Ft. Duffield
Duration Product Used:6 months
Price Paid: $375.00
Purchased At:Outdoor Ventures, Ra
Strengths:The frame is great, love the 2008 color scheme. componets are entry level but are not bad.
Weaknesses:pedels are plastic, suntour factory suspension only has 80mm of travel and no lockout.
Similar Products Used:only department store bikes years ago.
Bike Setup:RockShox Dart 3 forks, union K370 pedels, replaced 1 crank arm with a Bontrager sport 1. rest is stock componets for now. plan on some panaracer fire xc tires soon.
Bottom Line:Went with the 3900 at first since im on a budget, but the bike continues to impress me. Have rode Ft Duffield, KY trail at least 25 times so far and no issues. read the reveiws and you will see its a tough place. Would recommend this bike for anyone getting into mountain biking, but if you have the money for a 4300 or up, the more you spend the better componets you get.
Value Rating:5Overall Rating:5

Submitted by freeridegood a Cross Country Rider from Pittsburg
Date Reviewed: April 7, 2009
Favorite Trail:any muddy or bumpy and fast XC trails
Duration Product Used:6 months
Price Paid: $340.00
Purchased At:Pedal Power
Strengths:durable,good fit,great brakes and good tires and awsome grips
Weaknesses:rear derailer does not shift as smoothe as the trek 4500 front shock could be softer and not as stiff even if you adjust the preload you still can't get it to work soft when going over rough terrain
Similar Products Used:none
Bike Setup:everything stock except a patch on the front tube
Bottom Line:Great value you get alot for a low price and it has 24 gears and a cassete versus the Trek 3700 which has a freewheel and only 21 gears someone looking for a great value should buy this bike and the 09 model comes with disk brakes or v brakes I have the 08 model so I only have v brakes don't buy if you prefer everything to be top notch on your bike great bike works great and was affordable and it's durable
Value Rating:4Overall Rating:5

Submitted by kyle-trekboy a Racer from tbay
Date Reviewed: April 3, 2009
Duration Product Used:1 Year
Price Paid: $379.00
Purchased At:399 canadian
Strengths:awsome for speed, wieght, and suspension.
Weaknesses:no disbrake of prduct need over $200 to put them in.
Similar Products Used:none
Bike Setup:hard tail, spencer suspension, 24 speed.
Bottom Line:good bike for none hardcore mountian bike if u like dirt roads and jumps while goin fast and having a smooth ride this bike was ment for u.
Value Rating:5Overall Rating:5

Submitted by Desert Storm a Weekend Warrior from Kuwait
Date Reviewed: August 23, 2008
Favorite Trail:Marina Beach Drive
Duration Product Used:1 Year
Price Paid: $550.00
Purchased At:Extreme Sports
Strengths:Light frame but built like a tank, very sturdy. Good brakes, decent gears. Rides smooth on flat surfaces (Kuwait is very flat) and doesn't require much maintenance even in a country with a lot of sand and dust. Overall, doesn't cause fuss.
Weaknesses:Saddle is very uncomfortable. Doesn't come with a bottle holder (seriously...) and the biggest disappointment of all... THE TIRES. The tires feel like condoms that tear away and burst the tube on the slightest impact with a little prick. I had these changed almost right away. I loaded them with some sturdy Raleigh Travellers. Also, the pedals are plastic which shred like blobs of cheese on the slightest impact with road or any rough surface. Doesn't come with any bells of whistles for a gadget enthusiast. But nothing serious enough to not love the bike.
Similar Products Used:Nothing.
Bottom Line:The bottom line is that if you are not too fussy about little specifications then this bike is for you. Keep in mind that this bicycle is far and beyond above average than your ordinary bike and it will stay loyal and sturdy till as long as you treat it right and don't try to match this with your 3000 dollar bike. Also, I wouldn't recommend it if you are going to ride this up a mountain (even if it is a mountain bike). It's more for flat lands and similar terrains. If you were to use a bike for beat up use, don't use this. If you were to use this for extreme biking, don't use this. But if you're a casual rider who wants a professional bike for daily use, I highly recommend this.
Value Rating:4Overall Rating:4

Submitted by BillyBob1 a Downhiller from Carlisle, Cumbria, England
Date Reviewed: August 19, 2008
Favorite Trail:Altura Trail, Keswick
Duration Product Used:1 Year
Price Paid: $540.00
Purchased At:Scotby Cycles
Strengths:Strong Bomb Proof Frame, Colour Scheme, Upgradeability
Weaknesses:entry level componentry is not designed for serious downhill runs. Forks gave up after 6 months, Front wheel taco'd after 6 double berms and a left hand switchback.
Similar Products Used:Lots and lots of other mtbs
Bike Setup:Roxshox recon 351 forks, Time Z Pedals, Mavic XM319 with Shimano XC Hubs, Shimano XC front mech, FSA seatpost, Raceface evolve riser bar, Panaracer fire XC tires, Kore skewers.
Bottom Line:Wanted to make a further addition to my original entry, warning people to beware the entry level componentry on this steed. The bottom line is that it isn't designed for aggressive downhill riding. Cross country, the bike eats miles, and the frame is awesome. Fact is that TREK have saved in the componentry, and it tells on vigorous runs. If you check the setup section of this review, you will note some of my upgrades, and with the money spent, the bike handles like a dream, and is bomb proof. Have pulled off all sorts of stuff with no probs. BEWARE the original rims, and splash on some MAVIC XM 319's and some decent forks, and Bob is your mother's brother!!!
Value Rating:5Overall Rating:5

Submitted by Hazza6542 a Weekend Warrior from Sydney, NSW, Australia
Date Reviewed: July 5, 2008
Favorite Trail:The Oaks
Duration Product Used:More than 3 years
Price Paid: $481.00
Purchased At:Velo Nova
Strengths:Light and durable. Easy to chuck around and very good for beginners. The seat, the best quality seat i have ever ridden.
Weaknesses:Suspension wasn't the best quality, but for the money it was alright.
Similar Products Used:None
Bike Setup:Most was stock, new cassette, brakes, front rim, rear tire (Continental Vertical), BBB handle, grips, computer.
Bottom Line:Good bike for beginner riders. Easy to use, though don't try jumps too big. Worth buying, a great introduction to mountain biking.
Value Rating:4Overall Rating:5

Submitted by trailjohn a Cross Country Rider from houston, Tx - USA
Date Reviewed: June 19, 2008
Favorite Trail:Memorial Park
Duration Product Used:More than 3 years
Price Paid: $350.00
Purchased At:Acme bikes (Bike Bar
Strengths:Light (20 - 22 lbs), Ford color (black), ok parts.
Weaknesses:ok parts - derailler got out of tune quite fast.
Similar Products Used:wal mart bike - schwinn full suspension crap
Bike Setup:Sette handlebar, SPD clipless pedals.
Bottom Line:I had this bike for over 3 years, pounded it at least 2 times/ week during my college years on memorial park and terry hesrhey trails. Wheels held up ok, deraillers held up just fine. I only need to take it to the bike shop once every 2 months for the first 6 months (lifetime adjustments) to get the bike to settle. Eats up anything you can throw on it. I have jumped about 2-2.5 ft regularly and the frame held up great except truing the wheels every now and then. Again, sub par components is the reason i have to take it back for adjustments but other than that it is a joy to ride this bike. Components tend to settle after that and don't need a lot of adjustments. It's 10 lbs lighter than my wal mart bike which felt like a tank compared to this. My cousin got a Raleigh bike for 100 bux more equipped with a disc brake but this thing felt much better than that. Seat is crap but my butt got used to it.
For a cheap, sturdy hardtail for entry to mid level trails, you can't go wrong with this. THere are other bikes out there that i'd love to try but cost a lot more than this and presumably better but for the price and enjoyment i got out of this, it's well worth the money.
PS: except the pedal and the grip, i haven't changed anything out of this bike yet.
Value Rating:5Overall Rating:5

Submitted by pr0wlunwoof a Weekend Warrior from Cochran, ga, USA
Date Reviewed: June 12, 2008
Favorite Trail:ANY
Duration Product Used:3 months
Price Paid: $320.00
Purchased At:The Bike Shop Warner
Strengths:Good intro-intermediate
Weaknesses:Shifters must be adjusted periodically, but I believe no more than any other mountain bike. Tires could be better, but I plan on wearing them out before I upgrade.
Bike Setup:stock except for a seat bag and a pump.
Bottom Line:I bought a 3900 WSD for my fiance and she tried to kill it and herself and all it did was twist the handlebars and nock the front wheel out of alignment. With a little adjustment my friend took it for a 15 mile ride. So its pretty durable. The fork is good it could be better but I have yet to bottom out on it or be in a situation where more clearance would make a difference. This is my first bike since I was like 12 and I love it. I would make the purchase again. I bought it because the frame is great and the difference between this one and the 4100 was just accesories. If your getting into MTB this is a great choice.
Value Rating:5Overall Rating:4

Submitted by Michael a Weekend Warrior from Statesboro, GA
Date Reviewed: May 18, 2008
Favorite Trail:Any good one
Duration Product Used:3 months
Price Paid: $340.00
Purchased At:The Bike Shop, Statesboro GA
Strengths:Very smooth ride. Decent weight. Nice fork straight from the factory.
Weaknesses:The gears don't shift very smoothly sometimes. Not very good components(deraillers).
Similar Products Used:Trek 820
Bike Setup:Factory for now... I'm looking at a better crankset and deraillers.
Bottom Line:This is a great bike for beginners and intermediates looking for a solid bike to customize and upgrade. Great on trails and on the roads. I ride to class during the week and often hit the trails on the weekends. So far so good... It treats you as good as you treat it...
Value Rating:5Overall Rating:5

Submitted by Ryan Dudermackeral a Weekend Warrior from P. Harbor, FL, USA
Date Reviewed: February 19, 2008
Favorite Trail:Big ol Creek, Alafia
Duration Product Used:1 Year
Price Paid: $280.00
Purchased At:eBay
Strengths:Cheap, good for anyone getting in the sport. Probably the most affordable non-walmart bike out there.
Weaknesses:I was able to warp the rear wheel pretty stankin bad just from use over time. I only have gone on small jumps at most and some trail riding. Still, pretty solid and wickedly tubular bike for 300 buckaroonies.
Similar Products Used:All kinds of the wal-mart origin
Bike Setup:New rear wheel, new crank set, new pads up front (they look like carbon fiber, but they ain't), and new rubber for rollin on.
Bottom Line:_____ <-- That is the bottom line. Oh yeah, and it's a good beginner bike. 4 Flamin' Chilis all around.
Value Rating:4Overall Rating:4

Submitted by Lord Paolo a Cross Country Rider from Mandaluyong City, Philippines
Date Reviewed: February 14, 2008
Favorite Trail:n/a
Duration Product Used:Less than 1 month
Price Paid: $350.00
Purchased At:A&R
Strengths:Priced for beginners-refreshers, lightweight, responsive, looks.

Sitting and gaining almost 22 kilograms at work made me rethink my physical conditioning. In between determining the right exercise with time considerations, I saw the 14+ kilometers to and fro from work. Alas, after almost 12 years of last riding a bicycle, I went to a local shop and immediately laid my eyes on a price-tagged Trek 3900 (Disc Version). I also tried GT Chuckers 2.0 and 3.0 but subsequently bought the 3900. Before I even rode it far, I noticed how light it was when pulled down from its display rack. The bike is pure business, no frills, no cute packaging, everything you need to get you from point A to B. Test rode it only a few meters and just like that, bought it. Loading and unloading it from my car impressed me with its lightness. I know there are other lighter bikes than it but I thought this would carry a 109-kilogram man. I'd go first with tough but light, upgrade later on. Soon enough, I was riding it to work after purchase of riding gears (helmet, arm sock, etc.) and it didn't made me evaluate my skills at riding. The shifters would go smoothly, though this one I bought had to have its front derailluer slightly adjusted. The SR Suntour suspension fork suffices my riding style though I never considered riding really off-road to test it. Brakes initially would hesitate to panic-stop but after a few weeks made me respect their power. Manueverability was excellent maybe because of its lightweight frame. When you've ridden Manila rush-hour traffic then you'd appreciate a responsive ride. It delivers what its intended to do and nothing on the extreme side. A month, almost 700 kilometers, and losing 11 kilograms later, I can say this bicycle is worth my hard-earned money.

Eventually I would want to upgrade but still I'd think twice of administering >1-footer jumps with it. The 3900 is simply not designed for that.
Weaknesses:Steering components (case-to-case), Tires and arrgh! Saddle.

I really don't have the need for knobby tires, it vibrates, but the Bontrager Connection Trail would still go fast. The Bontrager saddle would hurt after riding a while. This would sound weird but the stock handlebar-stem combination just doesn't ergonomically suit me. I tried different adjustments but still the bottom of my palm would hurt in a long run.
Similar Products Used:GT Chucker 2.0 and 3.0 (Different applications but approximately the same price)
Bike Setup:Assembly stock except for a 50millimeter-cut Truvativ Hussefelt handlebar (which I believe is downhill-specific) and an FSA OS-140 stem.
Bottom Line:Getting back in the cycling game just got a tad easier. It will get you where you want; safely on the streets that is. However, this bike also proves that people are different anatomically. A few after-market parts and maybe a bit of tweaking and tuning, then maybe your purchase of a Trek 3900 is invariably on its way. No regrets here. Yet...
Value Rating:5Overall Rating:4

Submitted by Jay a Cross Country Rider from SF Bay Area
Date Reviewed: January 30, 2008
Favorite Trail:anywhere in China Camp
Duration Product Used:2 Years
Price Paid: $300.00
Purchased At:Valencia Cycles
Strengths:Frame is very solid and components are good enough for a beginner. This was my first bike in a long while and I shifted usually at the wrong times and heard some crazy sounds from the rear derailer but it never failed me. The front derailer always had an issue. It wasnt a big deal, you basically had to make sure you push the selector all the way up and hold it for a sec to engage from 1 to 2.
I am 5"8, about 170lbs and the fork sufficed for most xcountry riding. Climbing steeps was a little annoying since I would experience excessive shock bobbing. You won't notice until you get more experienced.
The brakes are very responsive.
Weaknesses:The tires. If you are in slick situations, the tires will not provide much grip.
Fork, but only after a few hundred miles or gain more experience mtb.

Honestly, there are no real weaknesses at this price point. I really don't understand why people would try anything more than a one foot drop with a $300 dollar entry level mtb.
Similar Products Used:Specialized Hardrock
Raleigh M20
Bike Setup:Stock
Bottom Line:Buy this bike if you are beginner.
If you plan to dirt jump or extreme downhill, save up your money for at least 5inches of travel.
Value Rating:5Overall Rating:5

Submitted by Matt Kuhl a Cross Country Rider from San Diego, CA
Date Reviewed: September 11, 2007
Favorite Trail:Haven't picked one
Duration Product Used:1 Year
Price Paid: $360.00
Purchased At:TREK
Strengths:Very inexpensive beginner's MTB. Relatively light and strong frame. "Safe" geometry.
Weaknesses:"Safe" geometry. Tendency to wander without total attention. Crap stock suspension.
Similar Products Used:TREK 6000, TREK 8500
Bike Setup:Shimano XT shifters/derailleurs/crankset/chain, Avid Juicy7 brakes, Cane Creek headset, Eggbeater Candy pedals, Marzocchi Bomber 100mm fork, Bontrager wheelset, Kenda Nevegal tires
Bottom Line:This was my first MTB, so it became my first build and I got used to it, but I wouln't recommend anybody wastes their time building one of these. Great learner bike, though.
Value Rating:4Overall Rating:2

Submitted by Satchel a Cross Country Rider from Boulder
Date Reviewed: September 11, 2007
Favorite Trail:Wasatch crest trail
Duration Product Used:1 Year
Purchased At:$450
Strengths:This bike is an all around great beginner bike. It is cheap, it has perfectly decent shocks that will bash you to bits on a downhill trail but for standard stuff it's great. Also, it is fairly light.
Weaknesses:Shocks will not hold up ti intense jumps, nor will the brakes. Shifter will not doo well under pressure. Also in gear 1-8 it rattles like a snake. DO not get if you will do much downhill.
Similar Products Used:Specialized hardrock xc sport, Specialized FSR XC expert
Bike Setup:W/ shimano clipless pedals, bar ends, nicer shifters etc.
Bottom Line:this thing is good for the commute but for any real hard biking get somthing better WITH DISC BRAKES!! for your own saftey!!!
Value Rating:3Overall Rating:2

Submitted by Satchel a Cross Country Rider from Boulder
Date Reviewed: September 11, 2007
Favorite Trail:Wasatch crest trail
Duration Product Used:1 Year
Purchased At:$450
Strengths:This bike is an all around great beginner bike. It is cheap, it has perfectly decent shocks that will bash you to bits on a downhill trail but for standard stuff it's great. Also, it is fairly light.
Weaknesses:Shocks will not hold up ti intense jumps, nor will the brakes. Shifter will not doo well under pressure. Also in gear 1-8 it rattles like a snake. DO not get if you will do much downhill.
Similar Products Used:Specialized hardrock xc sport, Specialized FSR XC expert
Bike Setup:W/ shimano clipless pedals, bar ends, nicer shifters etc.
Bottom Line:this thing is good for the commute but for any real hard biking get somthing better WITH DISC BRAKES!! for your own saftey!!!
Value Rating:3Overall Rating:2

Submitted by sammy laforge a from campbell River
Date Reviewed: August 13, 2007
Favorite Trail:Pump house trail
Duration Product Used:6 months
Price Paid: $600.00
Purchased At:Spokes
Strengths:Comforatable upright ride for distances and takes down hill real well. Very drurable. Disc brakes.
Weaknesses:Pedels are kinda slippery and they are polymer not metal.
Bike Setup:24 spd, spiner shocks.
Bottom Line:Great value for the money. Ive been beating this bike down for six months and its still giving me a great ride. IF your not wanting to spend over a thousand dollars to get a good xc bike then this one will hold up just fine till you can afford it.
Value Rating:5Overall Rating:4

Submitted by Rich a Weekend Warrior from Gainesville, GA
Date Reviewed: July 25, 2007
Favorite Trail:Chicopee
Duration Product Used:3 months
Price Paid: $340.00
Purchased At:Bike Town USA
Strengths:Nice frame, very light and strong. Gears shift smooth. Good stopping ability. Great design all around.
Weaknesses:Seat is a little hard. Front shocks not the best, but still decent.
Similar Products Used:Older model Treks. (A good 5 years back)
Bike Setup:Great fit.
Bottom Line:I hit up a few intermediate trails so far. Does really good downhill. It held up better than me going uphill... The tires didn't do too well going through the creeks. Got some good lift over jumps and landed smooth. Very easy to throw around on the trails. I am very happy all around. Definately a good bike for someone starting out or getting back into the sport.
Value Rating:4Overall Rating:4

Submitted by Taylor a Racer from Denver,CO
Date Reviewed: July 23, 2007
Duration Product Used:More than 3 years
Price Paid: $450.00
Purchased At:bicycle village
Strengths:Its a solid entry level mountain bike
Weaknesses:I bent the rims riding around my street and had to replace them, The fork gave out on me, rear deraillur broke unexpectedly after little use.
Similar Products Used:my first bike when I started racing have upgraded to higher end full suspension since
Bike Setup:upgraded to some XT components, WTB raptor tires, everything else stock
Bottom Line:This was my first mountain bike after I quit BMX racing, as soon as I started training for mountain bike races I ran into problems with this bike. It failed me several times leaving me stranded in the middle of trails. It seems like almost everything failed on me after I actually started riding trails with this bike. So when I began racing XC the bike only made it two races into the season before becoming unridable. I had to make the desicion to upgrade to something better because I couldn't keep putting money into this bike if it wasnt going to perform. Now I use this bike to just get around my neighborhood, not for racing, and I guess its ok at that. If you're not going to do anything besides ride on road or maybe a few begginer trails then this bike would be great for you, but if you're planning on getting into racing like I did or if you want to become a hardcore mountain biker i'd buy something a little better as an entry level bike.
Value Rating:3Overall Rating:1

Submitted by Darren Howarth a Cross Country Rider from U.K
Date Reviewed: July 2, 2007
Favorite Trail:Winlatter
Duration Product Used:Less than 1 month
Price Paid: $540.00
Purchased At:Scotby Cycles
Strengths:Excellent specs for an entry level MTB. Very robust yet light design,with the potential to ride comfortably both on and off trail. Easily upgradable if required.
Weaknesses:None that i can think of.
Similar Products Used:Various, too various to mention
Bike Setup:As per original spec apart from Time Z pedals
Bottom Line:Pound for pound, one of the best, if not the best entry level MTB i've ever ridden. Value for money, durability, and a great ride, that leaves you with a smile on your face. Without doubt the setup is very sophisticated for entry level. I noticed a great amount of feel for the road, through the bike, although still maintaining a comfortable ride. Anyways i've gone on too long. TREK...thanks a million!!!
Value Rating:5Overall Rating:5

Submitted by Greg a Weekend Warrior from Toronto, Canada
Date Reviewed: June 24, 2007
Favorite Trail:Waterfront Trail
Duration Product Used:1 Year
Price Paid: $350.00
Purchased At:Northern Cycle
Strengths:The aluminum frame is sturdy and light, which really helps if you're lifting the bike. I personally like the grips and handlebars, as they seem to fit my hands well. I also haven't had any problems with the shifters, and after a quick tune-up, they're always working just fine. The brakes are also pretty good for V-brakes, and they're much better than those on the Giant Boulder. Finally, the whole package is priced well and has stood up to about 70 miles of riding so far.
Weaknesses:The seat starts to hurt after a while, and the pedals are prone to slipping off your shoes. Also, the front fork isn't the best at absorbing the rumble when riding over gravel.
Similar Products Used:Giant Boulder (Demo'd)
Bike Setup:Mostly stock; only added fenders, bottle + cage, pump, Trek Incite cycle computer, and kickstand.
Bottom Line:A good bike for beginners like myself! It's relatively cheap, has good Shimano shifters and Tektro brakes, and the 2006 edition has a really sweet colour scheme (matte black on matte lava black). Recommended to anyone who's just starting mountain biking and wants a reliable and affordable ride.
Value Rating:4Overall Rating:4

Submitted by Dylan Kirby a Downhiller from Southport CT USA
Date Reviewed: June 16, 2007
Favorite Trail:downtown
Duration Product Used:2 Years
Price Paid: $350.00
Purchased At:Greenwich Bikes
Strengths:It has a real light frame good shimano shifters
Weaknesses:The front forks are terrible. When ever i go off a jump the compress and nail the from end. and the seat is real uncomfortable. also the rims i have bent them many of times.
Similar Products Used:Specilized hardrock
Bike Setup:same as the factory
Bottom Line:Bottom line this bike is only good for begginer mtb. it can not take any drops it cant jump. DONT BUY IT. trek is a good company but not this bike.
Value Rating:1Overall Rating:1

Submitted by Dan Kitzler a Weekend Warrior from Azusa, CA, USA
Date Reviewed: June 2, 2007
Favorite Trail:Upper San Gabriel River
Duration Product Used:6 months
Price Paid: $300.00
Purchased At:Pasadena Cyclery in Pasadena, California USA
Strengths:Excellent frame very sturdy and solid. Kudos to Trek Corp. for the Alpha Aluminium series. Great bike for paved as well as dirt. Tekro brakes are good too.
Weaknesses:Tires are not all that grippy in some spots. Shimano Acera derailer goes off track in higher gears. Plastic pedals. Seat hurts.
Similar Products Used:Trek 3700
Bike Setup:Stock except for Serfas gel saddle, Cat Eye odometer, Goodyear puncture proof inner tubes, Bontrager bottle cage and a Wrench Force mini air pump.
Bottom Line:Excellent price for the value. Great bike for beginners. Pro's should go for something a bit higher-end.
Value Rating:4Overall Rating:4

Submitted by Michael McCord a Cross Country Rider from LA, CA
Date Reviewed: May 10, 2007
Favorite Trail:fire break SM mountains
Duration Product Used:Less than 1 month
Price Paid: $320.00
Purchased At:Pasadena Cyclery
Strengths:Frame Frame Frame.....
Weaknesses:posibly fork but not yet, pedals, tires, wheels,
Similar Products Used:Trek 4500, 3700, Gary Fisher Tarpoon (crap)
Bike Setup:Mostly stock - answer taperlite bars
Bottom Line:After being off a bike for more than a decade (last mtb bought in 1991) I must say I love the 3900. The frame is where its at with this bike. Handlebars are steel so I replaced them with older Taperlites. Bought it in Pasadena CA and rode it home to Hollywood over 20 miles and the ride was great. I weigh 220 and stand 6'2" so I went with the 21" frame. The fit is perfect for me. I maxed out the fork preload at the shop and probably wont ever move it because it performed so well. I hope it wont give out on me - I am rough on bikes! Pedals must go as they are plastic. Shimano shifters are good and I was able to shift up and down out of the saddle with not skips going uphill with some finesse. Seat is ok if a little firm. Brakes are good with plenty of power to endo yourself. Chainstays are short and make wheelies a challenge. The stock tires are pretty bad. I got up over 30mph and they are not sure on pavement. The tires also hate water. I am planning on purchasing a new wheelset with tires. All in all I would buy another if stolen. I am one happy Trek rider.
Value Rating:4Overall Rating:4

Submitted by Tim a Weekend Warrior from Saratoga, New York
Date Reviewed: May 6, 2007
Favorite Trail:Battlefield
Duration Product Used:Less than 1 month
Price Paid: $290.00
Purchased At:Blue Sky Bike shop
Strengths:Quick and firm on and off road.

I bought 2 of these babies on Friday. The very next day my girl and I were off on a 36 mile excursion. 31 miles of roadway and a good 5 miles of beginner/intermediate biking trails toting some nice downhills and a myriad of roots, twigs, and even a few mud holes. All I can say is both bikes are awesome. They fly on the road and glide through trails without a whimper.

I'm new to mountain biking, but come from an extensive BMX background. I understand that jumps and boulder laden trails may be too much for the bike, but so far I roughed it up pretty good and there's zero problems. Though I haven't crashed yet.
Weaknesses:Absolutely none so far.
Similar Products Used:Giant Boulder
Bike Setup:Stock.
Bottom Line:If you are a beginner like my girl and I, and looking to do a mix of road and beginner/intermediate trail riding, this bike is excellent. We love our bikes.

Compared to the Giant Boulder SE I rented a year ago, it's lighter, faster, and the gears are more fluid.
Value Rating:5Overall Rating:5

Submitted by Chris Schwarck a Weekend Warrior from Columbus, Ohio, USA
Date Reviewed: April 27, 2007
Duration Product Used:1 Year
Price Paid: $100.00
Purchased At:Craigslist
Strengths:The build of the frame is nice, and very similar to my higher-end trek. So far I have abused the bike and it is holding up well. Sifters, works fine.
Weaknesses:The components on the stock bike are mostly low-end, and you will be upgrading them soon after a couple of rides. Replace the rims if you are going to do half-serious mountain bike trails etc. Single-walled rims will simply bend way too easy. Chainring – riveted so you can’t replace the sprockets / cogs!
Similar Products Used:Trek 4300, Trek 6700, Gary Fisher fuel.
Bike Setup:Replaced stock handle bar (grips too), seat, and rims.
Bottom Line:This is a decent bike for the $100 I paid for it. Right after I got it, I threw another $150 into repairs and parts, which made it useable. I’ve been abusing it and the frame is holding up great. I would suggest this over a Schwinn – but don’t get the idea that you will just upgrade parts to make it a better bike – that will cost you way more $ than just buying a higher model with better components!
Value Rating:3Overall Rating:3

Submitted by Steve a Weekend Warrior from Johnson Creek, WI
Date Reviewed: April 8, 2007
Favorite Trail:Emma Carlin (Kettle Moraine)
Duration Product Used:2 Years
Price Paid: $250.00
Purchased At:Chicago Cycles
Strengths:Frame geometry is good for a lower end bike, brakes worke very well even in wet/muddy conditions. Great pavement bike
Weaknesses:Fork was a piece of junk. Seals broke on first ride. Left crank arm wollowed out after 20 or so miles. Does not track well in the air if you like to hit ramps not the bike for the job. Handlebars bent after first year, not ment to take my abuse.
Similar Products Used:Specialized Hardrock
Bike Setup:Stock, FSA Riser Handlebars
Bottom Line:This is a great bike if you are not planning to do any hard riding. Suited for pavement or gravle paths. Good bike for a probee, but not good for someone that love to bike!
Value Rating:4Overall Rating:2

Submitted by Daniel a Weekend Warrior from Sunnyvale, CA USA
Date Reviewed: January 27, 2007
Favorite Trail:anywhere off pavement
Duration Product Used:6 months
Price Paid: $250.00
Purchased At:Walt's Cycle & Fitness
Strengths:I'm not too new, or very experienced w/ mountain bikes, just so you know.

Light if you compare this to an all steel bike. Very satisfying. For the price you pay for this, it's well worth it.

Great tires, the Bontrager Connection Trail tires are satifying on and off the pavement. The tread pattern is curved for great pavement cornering, and a stright center of rubber for strightline stability. Plus, the tires are puncture resistant. For off-road use, it's enough for most average surfaces, but loose surfaces are hard to navigate at low speeds. Mud performance is good enough for me. The brakes (TEKTRO's) are the strongest I've ever tested.

The shifters make me feel like a race car driver w/ paddle shifters(w/o a clutch), even though they aren't paddles. It corners well, compered to my previous crappy Wal-Mart bikes. The 8-speed rear gears(sprockets?) are well-suited for fast acceleration on pavement, and close geared for off-road use. THe problem is, if you're a newcomer to biking, learn how to maintain a bike ASAP, or you'll destroy the rear deraileur in the mud like I did. Since these aren't grip shifts, they're relitively easy to operate. Downshifting from "4" to "1" can be done easily. Shimano shifters haven't disappointed me yet. (Note that this bike has a mostly Shimano drivetrain) The stock Shimano Acera's were very responsive. But, after doing NO MAINTAINENCE and riding in deep mud for 3 consecutive days, the rear deraileur had it. Since the rear deraileur was on gear 1 for mud use, it got stuck on one of the spokes and just bent. So, after getting a new rear deraileur, a Shimano Atlus, it felt just as good as new. The Atlus feels very similar to the Acera, I feel no performance difference, although it should be a bit worse than the Acera (according to the Shimano website)

If you like the Bontrager (Sport) brand, you'll be happy w/ the abundant (or infinite) badges it provides. I see them all the time, and it makes me feel like I'm on a race bike when I'm really not. It also somehow made me a Bontrager fanboy.

The suspension is best for high-speed use. It's great for larger sized bumps like potholes.

It's my first quick-release axle bike, so those are very convenient, and haven't failed me yet.

If you get one in black, it looks bad-@$$ in my opinion.
Weaknesses:
The tires wear away rather quickly, especially if you like "drifting". Downshifting by 1 or 2 gears requires a delicate thumb. If you have an angry dad that'll rip your head off for taking apart the shifter(or something like that), then you might want to stay away from this, accessing the shifter's guts isn't easy because it requires a small philips(sp?) screwdriver.

The yellow-green -ish color I was forced to get is annoyingly "girly" in a way.

It's a hardtail(no rear suspension!), so if your "tail" isn't hard, then expect some @$$pain. The seat isn't soft.

The suspension is annoying in many ways, I don't know how to adjust it(the official website, I believe, claims that it's adjustable). Quite stiff, so it's not so great if you're going slow. I also get annoyed by trying to get the suspension to absorb small bumps by leaning on it. Even if I'm not leaning on it, it just goes over small bumps as if there was no suspension.

Similar Products Used:None, yet.
Bike Setup:Mostly stock TREK 3900 w/ Shimano Atlus rear deraileur, perhaps a 2005 or 2006 bike.
Bottom Line:Great for people that have begun to like, or might like mountain biking while having great pavement performance. A great multi-purpose bike for those who ride around 50% pavement and 50% off pavement. It's also a great bike to learn how to maintain a bike correctly, just go to your local bike shop (not Wal-Mart or anything like that) and ask an employee. After destroying countless Wal-Mart-ish bikes, this bike you can get from a bike shop teaches you that Wal-Mart bikes are worthless compared to shop bikes. Plus, the fun and performance you get out of this bike is well spent. It's quite cheap, and perfect for those who want a cheap all-purpose bike. Ge to the official TREK website to kill some time after reading this review.....

http://www2.trekbikes.com/bikes/bike.php?bikeid=1046600&f=18
Value Rating:5Overall Rating:4






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