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Niner Bikes S.I.R. 9

MSRP $
# of Reviews 28
Average Rating 4.93/5
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Description:
  • Custom drawn Reynolds 853 main triangle with size specific tubing
  • Single speed or speed compatible
  • Custom drawn s-bend chainstays and seatstays for added heel and mud clearance. Will fit a 2.3” tire
  • Niner designed drop outs that accommodate either a bolt on derailleur hanger, or single speed insert for a clean look when running only one gear
  • Niner’s super light 110 gram EBB with titanium fixing bolts
  • Stainless steel head badge
  • Niner specific geometry
  • 27.2 seatpost, 400mm length recommended 30mm seat clamp
  • 28.6 front derailleur clamp size, works with any derailleur, Niner recommends running the EBB in the forward most position when using a front derailleur

    Read the Professional Review for the
    Niner Bikes SIR 9! Click Here»


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    Submitted by RUNDCM a Cross Country Rider from olney maryland
    Date Reviewed: September 22, 2008
    Favorite Trail:any
    Duration Product Used:Tested or demo'ed only
    Strengths:everything
    Weaknesses:none
    Similar Products Used:none
    Bike Setup:Had Schwalbe Furious Freds on it,I remember that.
    Everything else was a blur.
    Bottom Line:The reviews on this bike are the truth.

    I've had a RIP 9 for about a month and enjoy it immensely.... My buddy said " I want to ride your RIP You will ride my S.S 29 er . I thought after 1/2 hour I could ask for the RIP back. 3 hours later I was still on it.

    SIR 9 is awsome. It was all rigid setup.

    climbs unreal. Can snap it back on the line so fast its incredable. logs-18" drop offs, rocks,-no problem!! I was amazed how this bike handled it all.
    The main reason I wrote a review about the RIP was so I justify writing a review here on how much I liked it even though I only rode it three hours. After the ride I call my buddy and apologized for not offering it back to him once he was finished riding my RIP.
    This was first time ever on a S.S.

    Now I gotta have it.
    Value Rating:5Overall Rating:5

    Submitted by mjaraica a Cross Country Rider from Rowland Heights
    Date Reviewed: August 29, 2008
    Favorite Trail:SART
    Duration Product Used:Less than 1 month
    Price Paid: $1100.00
    Purchased At:ebay
    Strengths:feels like a FS bike, steel flex, geometry, precise
    Weaknesses:None so far
    Similar Products Used:s-works, santa Cruz Chameleon
    Bike Setup:rigid carbon fork, ss, flat bar. crossmax tubeless, the rest thompson and ck with slr and panaracer rampage.
    Bottom Line:Today was my first ride on a 29er. The ride was a dream. I did the same trail with less effort and much better control. The bike inspires a lot of confidence and control and wants to keep going fast. Momentum is your best friend going up. I felt pedaling on the saddle was very effective while off the saddle was like a turbo. There are not words to describe the feeling. I feel like I found the missing lynk. What a great product! I feel like having so much fun finding the line and just let the bike go over it efforless.
    Value Rating:5Overall Rating:5

    Submitted by Lucid a Cross Country Rider from North Georgia
    Date Reviewed: July 11, 2008
    Favorite Trail:Tanasi (SS)
    Duration Product Used:6 months
    Strengths:-Steel (compliance, springy, Reynolds)
    -Can be set up as a SS or geared (via EBB and add on dropouts included with frame)
    -29"
    Weaknesses:None that I have found.
    However, the odd seat collar size might annoy some.
    Similar Products Used:First 29er, first single speed.
    Rode and still ride a Motolite
    Bike Setup:WS= Hope Pro II hubs laced to Stan's ZTR Flows
    Eno crank (32)
    Surly cog (20)
    Eggbeaters
    RF post
    WTB saddle
    FSA stem
    Sette slr HB (rotate back a bit and it gives good sweep)
    Ergon grips
    Avid BB 7 brakes
    CC head set
    Rampage (front)
    Igniter (rear

    Bottom Line:The ride is truly unbelievable for a hardtail. I feel as if it has about an inch to an inch and a half of travel. I love the springiness of the steel; it has great compliance, and it smooths out small bumps and trail chatter well.

    When single speeding, I have found that momentum is your friend, and the 29" wheels keep things rolling. The 29"s allow for a point and shoot experience and the ability to keep up your speed (corners, roots, rocks, etc). All of this is crucial to single speeding.

    I love the design, I love the size, and I love the steel.
    Value Rating:5Overall Rating:5

    Submitted by Charlie The Bikemonger a Cross Country Rider from Dorset - England (in Europe)
    Date Reviewed: April 25, 2008
    Favorite Trail:the one most resistance
    Duration Product Used:1 Year
    Price Paid: $800.00
    Purchased At:charliethebikemonger.com
    Strengths:Unreal ride
    Great handling
    Great fit
    Weaknesses:rearward facing slot in seat tube clamp area
    Similar Products Used:Surly karate Monkey, Fisher Rig, redline, and a few others
    Bike Setup:Rigid, 32:17 single speed, azonic bars, 180mm cranks, Time pedals
    Bottom Line:Biking nirvana, damned smooth ride, very nible, very fast, and a really great twang to the frame. Gotta love that all tubes are 853.
    The fork is great. The orange colour looks brilliant.
    It also looks just right, some 29ers look a bit odd, a bit stretched, but this looks like a 26er, only a tad larger, the proportions look and feel good.
    The front end is tad higher than many 29ers, and this is a good thing for us big guys. Just another factor that makes the ride enchanting.
    The guys at niner are real nice fellows.
    If you think you might like one, get one, you will love it.
    This is very likely to be a bike I will keep forever, or until I die... which ever comes first.
    Value Rating:5Overall Rating:5

    Submitted by Grommett a Weekend Warrior from Phoenix
    Date Reviewed: January 7, 2008
    Favorite Trail:National
    Duration Product Used:Less than 1 month
    Price Paid: $3000.00
    Purchased At:Slippery Pig Frame...DNA Built up
    Strengths:Handling, comfort, FUN!
    Weaknesses:Seat tube seems to slip down no matter how hard I crank the QR
    Similar Products Used:Stumpjumper Sworks convert to SS
    Bike Setup:XL Tang, I-9 on Stans Flow, C-King cog/ Headset, THomson stem n post, Sram Hollow pin chain, Juicy Carbon 160, Fox F29
    Bottom Line:Ok, we all have heard the hype..29 in wheels this...blah blah. I don't know how other 29ers are, but this bike is so much f**king fun I can't describe it. I love the simplicity and quite ride of a single speed...it is like being a kid again, but now I can really ride! I am not having any problems except on the most difficult of climbs and I see no deficiencies over my 26" Stumpy Sworks FSR as far as the handling goes. Since I am 6'3, the larger frame needed to accomodate the wheels is really no bigger than my 26" trail bike. It decends confidently and although I do miss a little bit of the rear travel from my FSR, the steel rides so much nicer than my previous Aluminum hardtail. Seriously, if you have even considered it...do it. I took a gamble and it was worth every penny. I am thinking of selling my FSR frame and fork and buidling a 29er FS now.
    Value Rating:5Overall Rating:5

    Submitted by Ed a Cross Country Rider from Oakland, MI, USA
    Date Reviewed: November 7, 2007
    Favorite Trail:Addison Oaks
    Duration Product Used:1 Year
    Strengths:Great at climbing and on the flats, perfect fit for me ( 5'10" w/med frame). Love the bike!!
    Weaknesses:front derailleur. I have used two versions of the recommended derailleur but with my measurements i need the EBB to be at the 6 o-clock position. Manufacturer recommends the EBB to be at the 9 o-clock position for best performance, which is true.. It works well at 9 but at 6 the derailleur become less dependable for shifting.
    Bottom Line:Great bike frame, great feeling on the trails but I would keep it a single speed. Which is what i am going to do and move my geared components to a RIP Niner frame.
    Value Rating:4Overall Rating:4

    Submitted by Chris Lockwood a Cross Country Rider from Ramstein AB, GE
    Date Reviewed: September 10, 2007
    Favorite Trail:Anytrail my bikes on
    Duration Product Used:Less than 1 month
    Price Paid: $2400.00
    Purchased At:Niner Bikes and Jenson USA
    Strengths:Steel is Real, the frame is very reponsive and like many others have stated, climbs very well.
    Weaknesses:None so far.
    Similar Products Used:None, this is my first 29er/SS.
    Bike Setup:S.I.R. 9/Hot Tamale/Med Frame
    Thomson Seat Post/Stem
    RaceFace Deus XC 180mm/34t crank/BB
    RaceFace Deus XC flat bar
    Avid Juicy 7 Disc Brakes
    Ergon Grips w/barends
    SunRingle Disco Flea Wheelset
    Kenda Karma Tires
    XTR Pedals
    Cane Creek Headset
    Wheels Manu singlespeed conversion kit
    SALSA Skewers
    NINER Rigid Fork
    NINER 20t Cogalicious
    NINER YAWYD
    WTB saddle
    TACX Bottle Cage
    SRAM Chain
    DKG Seatpost Collar
    Bottom Line:I had been looking for a hardtail for sometime, I called a certain mail order shop and was given the advice to look into a 29er. I did some research and happened upon NINER, I was not sure if a 29er was what I wanted. However, I participated in the Sleepless In The Saddle '07 about two months ago here in Germany. I was lucky enough to see a NINER, a Kermit Green S.I.R. 9 at the event and I was impressed with the bike. During the nightime event, riding a geared bike I could not understand how individuals with one gear were passing me on the flats and out climbing me on the climbs. Thats all that was needed, I wanted to find out what the secret was! After reading as much as I could about NINER Bikes, I finally settled on the S.I.R. 9 for the steel frame. The bike was assembled last week and I rode all weekend. The bike is very responsive and the geometry is spot on and I can't say enough about how it climbs, all weekend I climbed as many hills as I could find with a smile on my face. Bottom line, if your considering a 29er you won't go wrong with a NINER. The customer service is awesome, Chris, Bret and the crew are very helpful, the S.I.R. 9 is an awesome frame and I can't wait get ahold of my JET 9, A.I.R 9 and...
    Value Rating:5Overall Rating:5

    Submitted by Todd Greene a Cross Country Rider from Ferndale, MI
    Date Reviewed: September 10, 2007
    Favorite Trail:highland rec
    Duration Product Used:3 months
    Price Paid: $799.00
    Purchased At:trails-edge
    Strengths:853 steel. geometry is excellent as Niner has really focused on this aspect. climbs like a goat.
    Weaknesses:none yet.
    Similar Products Used:unit 29, rig, monocog
    Bike Setup:SIR (L) godzilla green. SS set up. race face cranks, 34t chainring, 17t ENO freewheel. niner flat top bars (cut to 26 inches - these things were bull horns at 28 out of the box). thomson elite x4 stem. race face deus headset and seat post. reba race fork. dt swiss rims laced to surly new disc hubs. avid bb7s. wtb saddle. geax saguaro tires (by and large pretty optimal for XC in SE MI).
    Bottom Line:beautiful bike. Steel Is Real. buy one, set it up SS (or gear it if you so desire, given the EBB and dropout adapter), Pedal Damn It. have fun.
    Value Rating:5Overall Rating:5

    Submitted by Mike Schiebout a Cross Country Rider from Highlands Ranch CO
    Date Reviewed: August 5, 2007
    Favorite Trail:Any trail on a 29er
    Duration Product Used:Less than 1 month
    Price Paid: $799.00
    Purchased At:Big Kahuna Bicycles
    Strengths:It's a Niner...Well Made...Great geometry...great color (Kermit Green)
    Weaknesses:None yet...mostly my legs
    Similar Products Used:My other Niner...Air 9
    Bike Setup:Carbon bars and post, Reba SL fork, 180mm XT cranks w/ 1 32t Salsa Chain ring and a 20t surly in back. Hayes 9 Carbon dics brakes. AM Classic 29 wheels w/ a Maxxis Cross Mark 2.1 in the back and a Nanoraptor 2.1 in front.
    Bottom Line:I haven't owned a steel bike in 17yrs. It rides great because of the steel frame, the Niner Geometry and the fact that it is a 29er.
    Value Rating:5Overall Rating:5

    Submitted by Chip a Cross Country Rider from Charlotte
    Date Reviewed: July 22, 2007
    Duration Product Used:3 months
    Price Paid: $750.00
    Purchased At:Black Sheep Cycles
    Strengths:Compliant, sized right, reasonably light, well made...
    Weaknesses:None!
    Similar Products Used:Surly Karate Monkey
    Bike Setup:Reba Race, Stylo GXP SS w/o bash, White Industries Freewheel, Thomson post and stem, Chris King hs, Fleegle bar w/ Ergons, Brooks Team Pro (butchered), Salsa Delgado rims, Surly Disc hubs, WTB Weirwolf LT 2.55, Candy SL, Avid BB7s
    Bottom Line:Fantastic bike. Perfect for all-around cross country riding. Climbs like a scalded goat, floats over logs and rocks, and is comfortable to boot. STEEL IS REAL!!!
    Value Rating:5Overall Rating:5

    Submitted by Tony a Weekend Warrior from Lansdale PA USA
    Date Reviewed: June 20, 2007
    Duration Product Used:3 months
    Price Paid: $799.00
    Purchased At:LBS
    Strengths:stiff,light, stable, fast
    Weaknesses:none
    Similar Products Used:gary fisher rig
    Bike Setup:07 sir9 medium,maverick sc90, avid juicy ultimate, stans/american classic custom wheelset with kenda tubeless tires,race face singlespeed cranks, thomson seatpost & stem, easton monkeylite riserbars
    Bottom Line:This bike is so much fun to ride. 23lbs.super fast climbs everything even singlespeed and flys around corners. gets over 2-3foot logs and down 2-3ft drops no problem. i use this bike more than my 7" travel freeride bike it is so much fun. buy nothing but niner if you are looking for a 29er that reallydoes anything a 26 will do and then alot more. I am still ear to ear smile everytime I get on it.
    Value Rating:5Overall Rating:5

    Submitted by Scott a Racer from Fort Wayne, In
    Date Reviewed: June 12, 2007
    Favorite Trail:Winona
    Duration Product Used:Less than 1 month
    Price Paid: $799.00
    Purchased At:South Lyon Cycles
    Strengths:This bike climbs like mad! Seems lighter than it should being steel. It carries momentum on every climb. This thing really carves every turn beatifully.
    Weaknesses:None so far
    Similar Products Used:Monocog flight 29er
    Bike Setup:XT Crank, Juicy 7s, Ritchey post and stem, Easton HB, Cane Creek ergo bar ends, Pace 29 carbon fork, American Classic 29ers.
    Bottom Line:This bike rides incredibly smooth and seriously makes you a better rider. The geometry is unsurpassed. Every time I ride it I smile like I've won the lottery. I try not to talk about it too much around other riders because I'm sure I get annoying talking about how smooth it carries huge logs and tremendous hills. I ride it SS. This is my first SS and it made the transition very easy. I truly believe this bike has made me a better rider and can't wait to race it. Definitely get one if you are a XC rider and give it a try rigid with a pace 29 carbon. It is smooth and handles like a dream. Enjoy!!!
    Value Rating:5Overall Rating:5

    Submitted by Jose Alvarez a Cross Country Rider from Fullerton, CA
    Date Reviewed: May 9, 2007
    Duration Product Used:Less than 1 month
    Purchased At:Niner
    Strengths:For a Steel frame it's way lighter than I expected. Geometry rocks! so, it climbs like a goat... very fast!! climbing or downhilling
    Weaknesses:NONE!
    Similar Products Used:Monocog 29er
    Bike Setup:CK headset, Reba 29er Fork, Rampage on the front and Small Block 8 Kenda rear(not for long), 240's DT SS hubs on Salsa Delgados rims, White Ind Black Crank Set/Shimmano BB, CB Acid Petals, Surly 19 gear on the rear/White Ind 32 gear on the front. El Camino Hydro Brakes, WTB saddle. Wide bars
    Bottom Line:I've been drooling for a while on these frames so finally I pulled the trigger and bough my self a nice Kermit Green Med frame. I love the color but that’s not why I have a huge smile every time I hit the dirt on this new frame. First of all this bike climbs so much better than my old 29er. The Geometry rocks! I can climb longer and faster than before with out loosing extra energy on the process. I love the feel when I ride on the saddle after a nice long hard climb OFF the saddle. It seems to help my body relax and rest better. This is a big PLUS for me b/c it helps me climbing longer and faster and rest better in between. I’m doing faster laps on my local trail and I can actually feel my self pedaling faster and harder trough out the ride. The handling is very solid especially on the technical switchbacks that used to give me problems when I did the 26er thing. The REBA works great with this frame. I feel secure and in control when I’m doing the fast technical single tracks. SPEED IS GOOD!! I love it ;oP

    I love the EBB concept. Never had a bike with one before so it has me really exited and happy when I have to deal with my chain witch is not much anymore!

    Customer service is top notch IMO!! Chris has done an excellent job helping me out trough this experience. Great Job Niner.

    I’ve been doing the dirt thing for a little over 6 years now. Single Speeding (29er) for only about a year now. And after buying this frame I would like to say that this bike is my favorite bike and the only bike I ride now in days. I ride it single and this frame helps my rides keep it simple. I ride more, faster and happier than ever. If anyone has questions just ask. This is one happy Niner owner that LOVEs his bike and that wants to share the fun with everyone looking for a fun new ride…
    Value Rating:5Overall Rating:5

    Submitted by Vince a Cross Country Rider from Pittsburgh Pa
    Date Reviewed: April 24, 2007
    Duration Product Used:6 months
    Strengths:The way this bike climbs & sticks to the trail is fantastic
    Weaknesses:none to speak of
    Similar Products Used:I gave up a sugar 2 for this bike. This is my first 29
    Bike Setup:avid bb7 disc brakes, all xt drivetrain & shifters, chris king head set, american classic wheels
    Bottom Line:This is the third mountain bike I have purchased & by far the most rewarding. These guys at Niner have taken Customer Service to a new level. I had a slight problem when I first built the bike and Chris from Niner spent the time on the phone with me to determine that the head set had been installed incorect. He also followed up with me after the fact to make sure everything was ok. Do not hesitate on purchasing one of their bikes
    Value Rating:5Overall Rating:5

    Submitted by unSane a Cross Country Rider from Toronto, ON, Canada
    Date Reviewed: October 23, 2006
    Favorite Trail:Kingdom Trails or Kolapore
    Duration Product Used:3 months
    Price Paid: $700.00
    Purchased At:bike29.com
    Strengths:It's steel, 29" and orange. Wonderful compliance and springiness, very light for steel, produces a big sh*t-eating grin when ridden. Terrific versatility, quality & customer service. Great geometry... what's not to like?
    Weaknesses:On the medium frame I get slight toe strikes on the front wheel (size 45 shoes, IRC Mythos tires). Seat tube slips easily even with Salsa clamp. Other than that, nothing.
    Similar Products Used:Trek hybrids, various borrowed 26" mtbs.
    Bike Setup:Medium tang SIR9, reba fork, American Classic/IRC Mythos wheelset (and a WTB dual duty/XT hub wheelset with slicks), SRAM X9 3x9 drivetrain, 160mm BB7s, sette bars and seatpost, WTB saddle.
    Bottom Line:This is an awesome frame, springy and lively, very fast. Despite being a hardtail the steel + bent rear stays produces an astoundingly compliant ride. I nicknamed my bike Tigger because it feels like it wants to bunnyhop the whole time. Easily the most fun bike I've ever ridden. Point and shoot downhill, great grip uphill. It certainly asks to be ridden faster than is safe but then does you the favour of getting you out of the trouble you got yourself into. With slicks and the poplock it also makes a *very* fast and comfortable commuting bike.

    Being steel, you don't feel afraid to throw it off drops, which is a big plus.

    Get one... you'll love it.
    Value Rating:5Overall Rating:5

    Submitted by Luke a Cross Country Rider from MA
    Date Reviewed: October 23, 2006
    Duration Product Used:Less than 1 month
    Price Paid: $799.00
    Purchased At:Ninerbikes.com
    Strengths:Ride Quality, Geometry, Aesthetics, Customer Service. I could go on and on... I like everything about this bike.
    Weaknesses:Nope
    Similar Products Used:This is my first steel bike and my first full 29er. Carver 96er SS, S.C. Blur LT, Epic Marathon, Stumpy FSR
    Bike Setup:Large godzilla green SIR 9, Maverick SC32, ZTR 355 rims on Mav. front hub and DT 240 rear, XT crank, X0 rear der., X9 grip shift, Thomson stem and post, Specialized Fast Trak, Deus Bar
    Bottom Line:I am 5'11" with a fairly long inseam and the large fits well (I originally ordered a medium and it was too small). This is the first steel bike I have ever ridden and the first 29er and I am just amazed how well the two do together; The ride is incredibly compliant, yet stiff and fast where it needs to be. The Niner geometry creates a bike that handles intuitively and inspires confidence over ALL types of terrain. It is amazing what this bike can do! Not to mention the 853 tubing and godzilla green color are fun to look at.
    I am sold on 29" wheel bikes and I love my S.I.R. Nine!
    Value Rating:5Overall Rating:5

    Submitted by RandyA a Cross Country Rider from Dearborn, MI USA
    Date Reviewed: October 12, 2006
    Duration Product Used:6 months
    Price Paid: $750.00
    Purchased At:Niner Bikes
    Strengths:Very smooth feel as you'd come to expect from 853 steel. Niner geometry is almost perfect for me (long inseam & arms) and fits me great. Solid build quality and very nice paint.
    Weaknesses:None to speak of.
    Similar Products Used:Surly Karate Monkey
    Bike Setup:Wheels: Delgado, Hope XC, DT Comps (36) - all silver
    Tires: Panaracer FireCross F/R (also use Kenda Klaw on Ft)
    Fork: Niner steel (Tang, b/c you have to match the frame y'know... )
    H-bar: Airborne Ti
    Stem: Thomson - silver
    Seatpost:Thomson - silver
    Saddle: Selle Italia Flite
    Grips: ODI Rogue
    Bar End: Cane Creek
    Shifters: SRAM 5.0
    F/D: SRAM X-gen
    R/D: SRAM 7.0
    Cassette: SRAM 12-26
    BB: Phil Wood Ti
    Crankarms: RF Turbines - silver
    Chainrings: RF 24-34, RF 46 outer
    Chain: SRAM PC-59
    Brakes: Avid Mech
    Levers: Avid SD7
    Bottom Line:With the matching Niner fork this bike is just pure joy to ride. I wanted a solid build with a smoother ride than my KM and the SIR delivers right on target. If you're looking for a great riding steel frame without having to go custom, you really should consider the SIR.

    I'm not really sold on the EBB concept though - but I'm not a SS'er so that's just me. I'm glad Niner is coming up with a geared-only version of the SIR.
    Value Rating:5Overall Rating:5

    Submitted by Brandon a Cross Country Rider from Saint Paul MN
    Date Reviewed: October 9, 2006
    Favorite Trail:Lebanon/Memorial
    Duration Product Used:3 months
    Price Paid: $725.00
    Purchased At:NowBikes and Fitness
    Strengths:The fit and finish, feel, quality materials, customer service...a good group of people.
    Weaknesses:Have not found one.
    Similar Products Used:RIG, Monocog
    Bike Setup:Tang color,SS, Reba fork, HOPE M4s, WCS post and stem, CK headset, Race Face cranks, NINER bar.
    Bottom Line:The bike is incredible. I went from a nice fs bike to this. I was worried about the ride, but it feels better to me than my previous ride. Being 220, I am hard on bikes...this one seems like it'll do just fine.

    The handling on this bike is nice and tight. I have been on other 29ers (and a bunch of 26") that do not even come close to feeling this good. Very happy with this choice...and would recommend to anyone looking for a 29er!

    Value Rating:5Overall Rating:5

    Submitted by DeeZee a Weekend Warrior from San Clemente CA USA
    Date Reviewed: September 19, 2006
    Favorite Trail:Holy Jim
    Duration Product Used:Less than 1 month
    Price Paid: $640.00
    Purchased At:Universal Cycles
    Strengths:Reynolds 853
    Breezer style dropouts
    Geared or SS
    Color choices
    72 degree HA (overall geometry)
    Frame arrives at your door ready to go (no frame prep except for some grease)
    Weaknesses:The new XT M760 DP drl fits close to the tire. You must use a traditional XT 28.6 BP (the drl the frame was designed for) to attain proper tire clearance.
    Similar Products Used:Fisher 292 Fisher Rig and Q-Ball
    Bike Setup:Geared with Reba fork, Hadley hubs / Stan’s rims.
    Bottom Line:This is my 4th 29’er and so far my favorite. The bike fits me great and the ride is as smooth as advertised. Laterally stiff but still it is compliant over the bumps. The Godzilla Green looks killer and it handles great. The only negative is that the new XT M760 DP universal drl fits really close to a 2.1 tire. After consulting with the guys at Niner they sent me an “older style” / “traditional” 28.6 BP drl. The guys at Niner need to change their website and explain to their customers the issue.

    I was really tempted to get a custom frame but now that I have the SIR I am glad I didn’t.
    Value Rating:5Overall Rating:5

    Submitted by Daniel a from Australia
    Date Reviewed: August 31, 2006
    Favorite Trail:majura pines
    Duration Product Used:6 months
    Price Paid: $3800.00
    Purchased At:MTB Precision Brisbane
    Strengths:The feel of steel, excellent handling. Quite light. Versaitle SS or geared dropout option. Eccentric bottom bracket is easy to use, reliable and works very well. Avid Juicy Seven brakes were cheap through Niner Bikes.
    Weaknesses:The build price caused me grief at first. I wanted a beautiful, solid bike and it cost me. 29" tires are kinda heavy and very hard to find around here. "Do you mean 26"? No, I've never seen one".
    Similar Products Used:26" MTB, steel road bikes.
    Bike Setup:XL frame, rigid singlespeed. Pricey build. Niner rigid forks, Thompson post and stem, Jones H-bars, Avid Juicy 7 brakes, Maxxis Ignitors on Velocity VXC rims on Chris King hubs. Middleburn Uno cranks, old WTB saddle.
    Bottom Line:This bike was my first good quality bike, first 29er, first singlespeed since the Schwinn cruiser. I went WAY over budget to build it with shiny, expensive, high-end parts. I was grieved by the expense at first but I have fallen in love with this bike! I have ridden it almost every day on various surfaces including road, fire trails, and singletrack. I am continually amazed at how well this bike handles, considering its size. It is long and tall. The effective top tube length is over 25", but the geometry is spot on. It corners fast, climbs steadily and descends solidly.

    Yes, some 29ers look funny, but my XL frame makes the 29er look proportional to a 26er, and though I am not very very tall (6'2") it fits me fine.

    I feel extremely confident on this bike and I try to ride fast all the time. (SS permitting) Singlespeed is great fun and highly recommended, even if you sometimes feel you are never in the right gear.

    29" tires DO roll really well, over bumps, roots and corrugations. Big tires means lower pressures means more grip and a plusher ride. I chose a rigid fork to save money and maintenance, and I don't feel inclined to change it.

    Due to a series of thorn punctures I put heavy 26" DH tubes in mine so I do feel the weight on the big climbs. Maxxis ultra thin tubes worked very well before the bindis came out in summer.

    I built this bike with nice parts and so far everything has worked faultlessly. I don't know if I would have got the same performance from cheaper parts but in hindsight I might have chosen a more "working class" build.

    Anyone who is in the market for a MTB should consider a S.I.R. 9. Tall riders will especially love this 29er "fad".
    Value Rating:3Overall Rating:5

    Submitted by KC Mares a Cross Country Rider from Reno, NV
    Date Reviewed: July 21, 2006
    Favorite Trail:Tahoe Rim
    Duration Product Used:3 months
    Purchased At:1500.00
    Strengths:Strong frame with excellent feedback. Frame does not flex yet seems to be smooth and very responsive.
    Weaknesses:???? Uh, paint scratches when it hits a rock? No really, I can't think of any, OK one: the rear skewer slipped within the dropouts on the first few rides. It sticks great now.
    Similar Products Used:No other 29" MTBikes but plenty of 26" wheeled mtn bikes.
    Bike Setup:American Classic wheels, Rock Shox Reba, Avid 7, Synros cranks, Niner bar, 32-20 tooth single speed.
    Bottom Line:Rides fast. Light, strong, great balance of geometry. I can huck this bike off 3-4' rocks going fast and land better and smoother than on my 4.5" travel Superlight. The wide bars are a blessing once you get through a few rides. I can't stand narrow bars now. I can outride almost anyone on 26" full suspension bikes b/c of the lighter weight and commitment that a single-speed creates.
    Value Rating:4Overall Rating:5

    Submitted by Beto Villegas a Racer from Sierra Vista, AZ
    Date Reviewed: June 22, 2006
    Favorite Trail:Beto's Way
    Duration Product Used:3 months
    Purchased At:M&M Cycling
    Strengths:Sweet
    Weaknesses:None
    Similar Products Used:Spot Brand SS, Gary Fisher Rig, and many, many lightweight geared bikes.
    Bike Setup:Niner build kit, Easton low rise bars, Salsa Scandium Stem (110m x 0 rise), Thompson Seatpost (410m), Selle Italia SLK Gel Flow Saddle, Chris King headset, Bontrager SS Racelight cranks (180), Bontrage Jones with Stans kit, Candy SL pedals.
    Bottom Line:I race XC and endurance. I always wanted a setup that I could use for both purposes and no sacrifices (weight/geometry, etc.), I finally found the sweet spot, Sir 9. I didn't get it because of it's diversity, but for it's geometry and the feeling of steel. I was considering Ti, but after my buddy dinged his brand new Lightspeed frame, I knew steel was for me. I purchased the Godzilla Green, eventhough red is my favorite color. I love the Green, it is SWEEEET!!!

    For those wondering about the geometry. I am 5'11 and I purchased the medium, perfect fit. With the above specs you should have no problem dialing in. I spend several rides dialing in, spending most of time off the bike making adjustments. I am anal when it comes to dialing in.

    Bottom line, get it you won't be disappointed. Don't get caught up in the 29er vs 26er debate, it's a bike with two wheels with forward momentum, need I say more. One more thing, if this has any worth, this is the sweetest ride I have ever had and this is a keeper. In fact, this is my only mountain bike, I dissed the rest of them. E-mail me if you have any questions.
    Value Rating:5Overall Rating: