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Sigma Sport Sport BC 800

MSRP $
# of Reviews 44
Average Rating 3.5/5
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Description:BC 800


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    Submitted by Chris a Racer from Ft. Collins CO
    Date Reviewed: April 1, 2007
    Duration Product Used:More than 3 years
    Price Paid: $35.00
    Purchased At:can't remember, been a long time
    Strengths:been working for 7 years
    Weaknesses:?
    Bottom Line:I'm not sure what type of moron can't get this computer set up correctly. I've had mine mounted for 7 years without any problems. Breaking rubber bands? What are you wrapping them around? Seven years and the same bands are still mounted onmy bike. The only problem I had with set up was mounting the magnet to my Ksyrium wheelset. Had to modify the magnet to fit the flat spokes. I've never had a problem with the sensor nor picking up the magnet. Maybe you people need to take some kind of class for morons or something. Computer works great
    Value Rating:5Overall Rating:5

    Submitted by Mike a Cross Country Rider from Santa Monica, CA USA
    Date Reviewed: December 8, 2006
    Duration Product Used:Less than 1 month
    Price Paid: $25.00
    Purchased At:Performance
    Strengths:Easy Set Up, Simple to Use
    Weaknesses:Rubber bands! Unrealiable
    Similar Products Used:Cat Eye, Vetta
    Bike Setup:Gary Fisher Big Sur Hardtail
    Bottom Line:Piece of *^$#! Don't waste your time. Completely unreliable sensor. Many times i would hit a tiny bump and would have to stop to readjust the sensor. It just decided to stop working on me after a few weeks of use. Also, the rubber bands are ridiculous. I had one snap on me a day after i put it on. You get what you pay for don't bother with this thing.
    Value Rating:1Overall Rating:1

    Submitted by Jeep_Nut a Cross Country Rider from USA
    Date Reviewed: June 27, 2005
    Duration Product Used:More than 3 years
    Price Paid: $30.00
    Purchased At:LBS
    Strengths:Functional bike computer that hasn't broken off my handlebars after crashes.
    Weaknesses:The little magnet on the spoke does need to be properly in place for the sensor to pick it up. I reset my computer and check the mag before each ride.
    Similar Products Used:Jeez...it has been a while but I tried a Specialized, a Cat Eye and a few others quite a few years ago.
    Bike Setup:The bike this is on is a 2001 Chameleon built w/XTR.
    Bottom Line:I do not ask much from my computers, current speed, max speed (for downhill runs), distance and a clock.

    What I like about my 800 (which is quite a few years old) is the computer saddle and the sensor mount are both held on with big O rings. I wreck, hey it happens. All of my other computers died in a wreck, usually the computer got ripped off the mount when the handlebars made contact with the earth. One time my knee followed into the bar after the computer came off, giving me a huge gash.

    When it comes time to buy another computer, if Sigma still uses the same O ring idea, I will go with Sigma.

    I rate the Value at 5 because it was cheap and has lasted a long time and the overall at 4 because of the poor magnet mount idea.
    Value Rating:5Overall Rating:4

    Submitted by Dan a Weekend Warrior from College Park, MD, USA
    Date Reviewed: May 9, 2005
    Duration Product Used:6 months
    Price Paid: $20.00
    Purchased At:REI
    Strengths:Easy to mount with rubber bands, large size speed indicator
    Weaknesses:Sensor is really underpowered and moving it by even 1 mm may cause the computer to not detect anything at all, no average speed mode (RRGHGH!), no start/stop button
    Similar Products Used:DB 4LW wireless computer
    Bike Setup:Trek hybrid
    Bottom Line:The cheapest computer REI had for sale. It works reliably once you set it up right, but has no average speed mode, which bugs me a lot, since what I'm usually interested in is making sure I'm keeping up a good pace.

    I used to use a DB 4LW wireless computer on my mountain bike, got it for $25 at performance. This was a much better choice: large font 4-line display and much less finicky sensor.
    Value Rating:3Overall Rating:2

    Submitted by Adik a Cross Country Rider from Moscow, Russia
    Date Reviewed: January 6, 2005
    Duration Product Used:More than 3 years
    Price Paid: $20.00
    Strengths:BIG digits of speed indicator. The biggest speed idication I've seen yet on cycling computers.
    Weaknesses:Extremenly unreliable cadence detector (the part on your fork that detects the magnet on your spikes). Magnet doesn't fix dead on the spokes. Computer post is weak, esecially on new generation of Sigma computers.
    Similar Products Used:CatEye Velo8
    Bike Setup:Transmission - Alivio
    Hubs - XT
    Rapidfire - Acera
    Bottom Line:The only thing that makes me use Sigma BC800 is the biggest size of speed indication digits of all cycling computers. The most unreliable part is surely cadence detector. It can go out of action upredictabely. It can be a really big problem when you're on a bike travel abroad, because sometimes carefull navigation is a question if not of life and death, then at least of comfort for the nearest night.
    A small relief is that Sigma sells Repair Kits for computers, which contain cadence detector (5$). So you've got to carry one spare detector with you all the time.
    Another weak moment - the magnet is fixed flexible on the spokes, that's why if something hits your wheel, your magnet can move from the right place and the computer won't operate. You'll have to stop and restore the position of the magnet.
    Finally, those new posts for computers (square, with round jack for the computer) are very weak. That square plastic thing just rips off the part, which holds the rubber.
    To summ it up, Sigma BC800 will only be useful for those, who need big-scale indication. Otherwise, buy CatEye.
    Value Rating:2Overall Rating:2

    Submitted by Bryan a Cross Country Rider from Colorado Springs, Colorado, USA
    Date Reviewed: July 1, 2004
    Duration Product Used:Less than 1 month
    Price Paid: $20.00
    Purchased At:Ted's Bicycles
    Strengths:Flashy, yet simple design
    Easily readible display
    All the simplistic features you need
    Weaknesses:Docking station on the bike is reliable, just have concerns for the future
    Rubber-band (more like o-ring) fasteners
    Similar Products Used:Bell Speedometer (from Wal*Mart)
    Bike Setup:Diamondback Coil '04
    Stock everything
    Bottom Line:My first impression of this computer was good. I enjoy the simple design and ease of use when riding. Very easy to reset the travel distance, time traveled, etc.

    I've been looking for a simple computer like this for weeks, and Sigma has provided just the thing I need.
    Value Rating:4Overall Rating:4

    Submitted by Rich a from Dresden
    Date Reviewed: April 23, 2004
    Duration Product Used:1 Year
    Price Paid: $15.00
    Strengths:good computer for it's price; excellent readability; buttons work; twistlock is the best attachment mechanism I know
    Weaknesses:no average speed!?!
    Bike Setup:CUBE LTD1
    Bottom Line:I basically write these line because I got excellent support by Sigma when the wire was (internally) broken. They sent a new socket without any hassle.
    Value Rating:3Overall Rating:4

    Submitted by Vic a Cross Country Rider from Moscow, Russia
    Date Reviewed: March 30, 2004
    Duration Product Used:3 months
    Price Paid: $20.00
    Strengths:Decent machine for its price, most the functions needed are here.
    Weaknesses:Hard to mount on RockShox forks (need to slide almost all the way down). No avg speed, lacks stopwatch, no gear indicator... but, hey, for just $20 it rocks.
    Similar Products Used:Shimano FlightDeck
    Bike Setup:GT Avalanche 1.0, XT, LX, blah-blah-blah...
    Bottom Line:Nice thing. Compared with FlightDeck it lacks avg speed, stopwatch and controls are not that comfortable, but, man, its 1/5 of the FlightDeck's price. What really sucks is sensor setup, it has poor compatibility with different forks.

    Anyhow, nice value. Have enough bucks for FLightDeck, go for it. Less - try upper Sigma models. No need for stopwatch and advanced functions - go for that one.
    Value Rating:5Overall Rating:4

    Submitted by Tim a Racer from Arlington, VA, USA
    Date Reviewed: January 6, 2004
    Favorite Trail:any fast singletrack
    Duration Product Used:1 Year
    Price Paid: $20.00
    Purchased At:REI
    Strengths:Cheap, no tools required for installation!!! Easy to use and set up. Can mount on stem to save space on handlebars (screwdriver required). Lightweight magnet, great for road racing.
    Weaknesses:Magnet can rotate on spokes when you brush against it. I replaced magnet with one that is held in place by a screw. No average speed.
    Similar Products Used:cateye, avocet, vetta
    Bike Setup:Yeti mtb, Cannondale road bike, Barracuda mtb (for commuting)
    Bottom Line:Easy to set up and use! Holds up well, several rides/races in mud/light rain/snow with no problems. Computer twists off instead of pushing straight on, so much less chance of accidentally bumping it loose (lost my Vetta this way). On carbon fiber road bike forks it can be tough to fit sensor and magnet between fork and spokes -- buy a rear-wheel cyclometer instead or use wireless kit. *** TIP - on mtb forks you need to use two of the mounting bands to hold it on.
    Value Rating:4Overall Rating:4

    Submitted by Tongue a Cross Country Rider from Schweinfurt, Germany
    Date Reviewed: July 13, 2003
    Favorite Trail:Höchberg
    Duration Product Used:3 months
    Price Paid: $13.00
    Purchased At:Schauer
    Strengths:Simple to instal, Customer Support, Size, easy to read and figure out, double sided tape on mount and sensor. Haven't had any problems with the wire even after bushes and crash.
    Weaknesses:O-ring for front fork is a little small. Broke the first one in a week (stretched it too much). Went back to the place i bought it and they gave me a couple free of charge. Needs larger o-ring to compensate for front shocks.
    Similar Products Used:None
    Bike Setup:99' Iron Horse G-out
    Bottom Line:Good product bought because it was inexpensive and had all of the functions I wanted for a bike Computer. No problems with autostart or stop. Computer stays on a little bit longer than I want it to after I get done riding, but no big deal. Then button to change the functions also pushes a little bit harder than I like. I would recommend it to anyone who has never bought a computer and would like something that is simple to instal and use.
    Value Rating:4Overall Rating:4

    Submitted by Almoe a Weekend Warrior from Encinitas CA
    Date Reviewed: June 5, 2003
    Favorite Trail:road=Elfin Forest
    Duration Product Used:2 Years
    Price Paid: $15.00
    Purchased At:Nytro
    Strengths:Simplicity compared to other computers. Value. Good basic info for the money. Have had no real problems with the rubber band straps - easy to remove base/fork unit for cleaning.
    Weaknesses:Would recommend only for Roadies. I wouldn't put it on my mtn bike. Sensor can pop loose at times.
    Similar Products Used:Vetta wireless that died in 2 weeks, Cateye.
    Bike Setup:road = Klein Quantum Race
    Bottom Line:Decent basic unit with few problems. Great value for the money. Don't have to pull out the manual too often. Over 4k miles on it and still ticking.
    Value Rating:5Overall Rating:4

    Submitted by Frank a Weekend Warrior from San Luis Obispo California
    Date Reviewed: April 7, 2003
    Duration Product Used:Less than 1 month
    Price Paid: $15.00
    Purchased At:nashbar
    Strengths:The computer worked.
    Weaknesses:RUBBER BANDS TO HOLD IT ON??!!! You've got to be kidding. The fork sensor is held in by gravity and of course, a rubber band. The release button is so light you can't tell when you've unclipped the computer.
    Similar Products Used:Specialized
    Bike Setup:Blur with nice stuff
    Bottom Line:When I got it I thought it was a joke. Yeah, I'm going mountain biking with a component that is held on by rubber bands. So I zipp tied what I could and hoped for the best. Well at the end of the second ride the computer was gone. Probably lost it while portaging over a creek. This computer is a waste of time and money. They're cheap for a reason. Don't bother.
    Value Rating:1Overall Rating:1

    Submitted by Alden a Cross Country Rider from Hinsdale, IL
    Date Reviewed: March 17, 2003
    Duration Product Used:More than 3 years
    Price Paid: $18.00
    Purchased At:where it's cheapest!
    Strengths:I have several of the BC800's and Targas on my bikes. I have had a water logged problem after getting poured on while touring. The computer did condensate. Had a few problems with the wireless set up too, but all of these problems were easily and quickly fixed by Sigma's customer service dept. They have awesome support and stand by their products. I got rid of my very expensive Flight deck cuz I could not stand it stopping all the calculations if you bumped the button on the shifter. The mounting systems is great! MTB will have problems with the rubber band type straps but for roadie's this is super!
    Weaknesses:Like any computer, these too will have a few problems.
    Similar Products Used:Avocet, Flight Deck, Cateye, Trek, Axiom, & Vetta.
    Bike Setup:Trek 5500, Fondriest, Bike Friday, Trek R-200, Trek Fuel 100
    Bottom Line:You will not find any better customer service in this industry than Sigma! Look for the new RDS wireless coming out - very cool! If you can find it on sale all the better. Found the wireless set-up at Performance for $12.99. A while back Performance had the RCS wireless set-up and BC800 for $27.99 - what a deal!
    Value Rating:5Overall Rating:5

    Submitted by Nick a Weekend Warrior from Oak Lawn, IL USA
    Date Reviewed: March 14, 2003
    Favorite Trail:Swallow Cliff and Maple Lake
    Duration Product Used:6 months
    Price Paid: $23.00
    Purchased At:Evergreen Park Schwinn
    Strengths:Can't say there are any.
    Weaknesses:Lots... Oh-where to begin? Ok, the rubber strapes. They could of had made better ones... Also, I went on a ride... it worked perfectly fine. The next weekend, I went for another ride. It did not work. I checked out the battery. perfectly fine. Never worked again. I am very disapointed, especially after all the revies friends/people gave me.
    Similar Products Used:Cateye
    Bike Setup:Gaint: Yukon, stock
    Bottom Line:I'm not sure wether to say buy it or not. I cant say much more than, it wouldnt work, even w/ a new battery. So, if u decide to purchase one, good luck!
    Value Rating:1Overall Rating:1

    Submitted by Paul a Weekend Warrior from Wisconsin
    Date Reviewed: September 13, 2002
    Duration Product Used:3 months
    Price Paid: $47.00
    Purchased At:W&S
    Strengths:Fast install (20 min), Easy set-up and program, Wireless, Removes from base easily. Auto start and stop works perfect. Very accurate, and easy to read display.
    Weaknesses:I was a bit nervous about the tie wraps for the receiver base mount, and thought I would at the very least have to replace with a set having a metal pawl. I haven't needed to yet.

    The rubber band mount design for the sender is shameful.

    I used this installation technique for the initial set-up, and then secured it properly with two 5/16" wide nylon tie wraps with metal pawls. Seemed to do the trick, it no longer moves or vibrates. I do plan a more serious fix this winter.
    Similar Products Used:None.
    Bike Setup:Trek 4900 base with a few updates
    Bottom Line:Excellent product.

    I really put it through some wicked rooted and rocky downhill trails in northern WI, and it never skipped a beat. Its a hard tail bike, so this unit can take a real pounding without failing (so far).

    I have the distance from the magnet to the sender at about 3/16" with no problems. Sometimes the base slides about the bars while re-installing the computer (those darn tie wraps!), but it continues to work fine, so its not very fussy on mounting position.

    Bottom line: I am very pleased with it so far, and would buy it again. Just note the mounting issues and simple fix.
    Value Rating:5Overall Rating:5

    Submitted by mike a Weekend Warrior from greenville,sc
    Date Reviewed: May 26, 2002
    Favorite Trail:Tour de dump(southside park)
    Duration Product Used:Less than 1 month
    Price Paid: $40.00
    Purchased At:pricepoint
    Strengths:inexpensive
    Weaknesses:functions poorly, very weak system to hold computer onto handlebar
    Similar Products Used:cat eye wireless
    Bike Setup:Jamis Dakar comp, Marzocchi z3, Avid disc brakes
    Bottom Line:I have 2 major complaints with this computer. I bought the Sigma BC 800 with the wireless upgrade kit. The computer itself probably works fine, but the wireless system never worked properly. It fit easily onto my bike but despite all efforts, it would only receive transmission intermittently(yes the battery was ok and all angles and distances were within range). In fact, i took everything off the bike and placed the transmitter and sensor next to each other and still could only get it to sense the wheel/spoke magnet occassionally.
    Also, the thin cable ties that hold the receiver and computer to the handlebar broke before I ever even made it to the trail! This alone would prevent me from ever recommending this product even if it functioned properly.
    Buy a Cateye wireless.
    Value Rating:1Overall Rating:1

    Submitted by Ric a Weekend Warrior from Austin
    Date Reviewed: April 23, 2002
    Favorite Trail:Walnut Creek
    Duration Product Used:3 months
    Price Paid: $45.00
    Purchased At:cycle360
    Strengths:Simplicity. For the price you got what you really need.
    Weaknesses:Rubber mounts
    Bike Setup:K2 Attact 3.0. Factory no modofications.
    Bottom Line:I like this bikecomp but the problem is its auto/start/stop never worked. Its always on since I got it. I'm ready to toss it back to the store as soon as I can.
    Value Rating:3Overall Rating:2

    Submitted by Chris Mallardi a Weekend Warrior from Tampa
    Date Reviewed: March 19, 2002
    Duration Product Used:2 Years
    Price Paid: $45.00
    Purchased At:LBS
    Strengths:Simplicity!
    Customer Service
    Accurate and easy to use
    Chi Chi of wireless set up
    Weaknesses:Finicky sensor/magnet set up.
    Buttons on display make clicking noise over bumps.
    A bit too delicate for hard off road riding.
    Rubber Bands?!?!?!?!?
    Similar Products Used:Avocet
    Cat Eye
    Bike Setup:GT i-drive team.
    All XTR
    Bottom Line:When I purchased this wireless comp. it was the only wireless unit that did auto start/stop.
    Set up was easy but soon found that the clearance between the magnet and the sensor has to be VERY close to get a signal. Have to readjust sensor everytime I take wheel off or hit a HARD bump. Overall I would do a wired unit next time.

    Sigma Sport has the BEST customer service I have experienced in the bike business.

    This would be a great product for roadies...less so for downhillers..and about right for XC.
    Value Rating:3Overall Rating:4

    Submitted by dave winter a Racer from london, united kingdom
    Date Reviewed: January 16, 2002
    Duration Product Used:3 months
    Price Paid: $19.00
    Purchased At:mail order
    Strengths:I had the wired version first and i hated it, all those loose wires mad me very nervous. Now I have the upgraded wired version and I love it, it is small, light, easy to set up and very easy to understand.
    Weaknesses:Wouldn't buy the wired version, wires a weak and will break.
    Similar Products Used:none
    Bike Setup:Giant OCR2 ext pro bars.
    Bottom Line:If u spend that little extra on the wireless, a flawless product.
    Value Rating:5Overall Rating:5

    Submitted by William Brave a Weekend Warrior from Spain
    Date Reviewed: January 14, 2002
    Favorite Trail:everyone with no asphalt on it
    Duration Product Used:3 months
    Price Paid: $25.00
    Purchased At:Decathlon
    Strengths:Easy to read
    No wires to break
    Price
    Weaknesses:Very difficult to find the accurate spot around the fork for the sensor
    The rubber strip that supports the sensor breaks easily under the strain of the wide forks of mountain bikes (one month in my case) and was told by the dealer that that particular issue wasn't covered by the guarantee.
    Do the factory mounts uncharged batteries? When riding with cool weather (0ºC or so) on shadowy hills it doesn't work (it displays crazy speed or no speed)???
    Similar Products Used:Cateye miti 2
    Bike Setup:Scott Boulder stock except pedals (Shimano M-747)
    Bottom Line:Good price for a product that could be great solutioning a couple of little problems like unsecure instalation of the sensor and the 2nd hand batteries that it seems to bring from factory
    Value Rating:4Overall Rating:3

    Submitted by Lee Kreutz a Cross Country Rider from Savannah GA U.S.A.
    Date Reviewed: August 11, 2001
    Favorite Trail:Tsali
    Duration Product Used:More than 3 years
    Price Paid: $18.00
    Purchased At:Qualily Bike, Savannah
    Strengths:Reliable, accurate and easy to use.
    Weaknesses:Accessories may not hold up to hard riding.
    Similar Products Used:none
    Bike Setup:2000 Specialized FSR
    Bottom Line:I have had this computer for over 3 years. It is very durable and dependable. The display is very easy to read and instantly lets you know if you are above or below your average speed. I broke the wire mount and upgraded to a wireless mount. The wireless transmitter broke after 7 months. I contacted Sigma customer support via E-mail to accquire replacement parts. They asked me to return it to them, which I did. I received not only a new wireless system but also a new wire mount as well! Great customer support and affordable price make the BC800 a great choice for any type of rider.
    Value Rating:5Overall Rating:5

    Submitted by Anders Eliasson a Cross Country Rider from Sweden
    Date Reviewed: August 11, 2001
    Duration Product Used:3 months
    Price Paid: $30.00
    Strengths:Washing machine proof and I suppose also waterproof. Easy to use.
    Weaknesses:Not so easy setup on your bike.
    Bike Setup:GT Aggressor 1.0, stock.
    Bottom Line:It's definitely waterproof, mine has just been travelling around in the washing machine for half an hour, works properly and is very clean.
    Value Rating:5Overall Rating:5

    Submitted by Mike a Racer from Cincinnati, OH USA
    Date Reviewed: July 24, 2001
    Favorite Trail:KY 10 & 22
    Duration Product Used:More than 3 years
    Price Paid: $23.00
    Purchased At:Performance Bicycle
    Strengths:This thing is sweet! It has been on my bike for 3 years, rain, washing, racing, original batteries, no problems. It has good top speed capability (saw 156.7 this weekend)!
    Weaknesses:Wires a little thin. I had worn through outer sheathing once due to continual rubbing. I put a layer of heat shrink over the spot and problem solved. I'd like to be able to reset each of the values individually, but that is available on their higher models (BC1200/1400).
    Similar Products Used:None - first chioce was this one due to recommendation and price.
    Bike Setup:93 CBR900RR, TBR full pipe
    Bottom Line:I am totally impressed with the ease of use and the accuracy of this Sigma product. I have had this on my bike for about 8000 miles and vibration, moisture and a really good high-side have not affected it at all. I just ordered a BC1400 to put on my Giant Rainier SE (due to individual value reset capability). I bought a different brand for my son's birthday bike (last minute purchase)and bought what was available - I should have given him a raincheck for a Sigma.
    Value Rating:5Overall Rating:5

    Submitted by Rob a Downhiller from Augusta
    Date Reviewed: July 10, 2001
    Favorite Trail:Canal
    Duration Product Used:Less than 1 month
    Price Paid: $45.00
    Purchased At:Andy Jordans
    Strengths:NONE
    Weaknesses:EVERYTHING
    Bike Setup:Giant Rainier SE different tires
    Bottom Line:This product sucks. If you mountain bike at all DO NOT BUY IT. It mounts with a rubber band, and two whimp wire ties for the computer mount.

    Functions well but not worth a damn if you do any type of bike riding. I took it and threw it on the counter at the store and said TRASH CAN!!!!!!!!!!!!!!!!
    Value Rating:1Overall Rating:1

    Submitted by Tim Campbell a Cross Country Rider from Cleveland, Ohio
    Date Reviewed: July 8, 2001
    Favorite Trail:Oho Canal Towpath
    Duration Product Used:1 Year
    Price Paid: $25.00
    Purchased At:Tim's Cycle, Middleburg Hts. Ohio
    Strengths:It is very easy to operate and to view---big, large numbers and only two large buttons.
    Weaknesses:None so far---although after reading other reviews, I don't understand how some people would have such serious problems with the BC 800. I do wish that I would have purchased one with a cadence on it. However, I have been very satisfied with the BC 800.
    Similar Products Used:A Cateye on another Bike that I have sold.
    Bike Setup:I use it on a modified Raleigh C200. I usually put at least 100-120 miles a weeek on the bike.
    Bottom Line:Very good---it has all of the things that I need---except for the cadence. Other than that, it is very eay to operate and to install. I use it almost daily and have had no problems with it. It would be a perfect cycle computer for somebody who wants a large, easy-to-read dial and just the basic system requirements. If you are into really flashy computers, this isn't for you.
    Value Rating:4Overall Rating:4

    Submitted by Ruud van der Ham a Weekend Warrior from Rijswijk, The Netherlands
    Date Reviewed: June 29, 2001
    Duration Product Used:2 Years
    Price Paid: $20.00
    Purchased At:local dealer
    Strengths:No frills: just the functions you want.
    Standard accessories for the complete Sigma line.