By Brian Corff
My race bike this year has been a Specialized Stumpjumper Expert Carbon 29er, and it has been sweet!

Prior to this, I haven’t owned a hardtail since 2002, so I was skeptical going in. On top of that, I have been fairly outspoken against carbon fiber for mountain bikes (just ask a few of my riding buddies). As a final straw, I had spent very little time on 29ers and I was not really sold on the concept. I can’t say that this bike has completely changed my perspective about any of these topics, but I can say that this bike is definitely fast, light, and it rolls extremely well… making it one hell of a good race bike!
Racing in the mountain region tends to involve lots of climbing. Two of the biggest races on my calendar each year are the XTERRA Mountain Championship in Beaver Creek, Colorado, and the XTERRA National Championship in Ogden, Utah. Anyone that has raced in these places knows that both courses share the same general formula… swim in a lake down in a valley, ride your bike straight uphill for 20 miles to the base of the ski area, then run up and down the ski hills. Because both bike courses are basically hill climbs, I figured that minimal weight was the number one priority in a race bike. Some of the other local race courses would definitely be more fun with full suspension, but none of them are impossible on a hardtail. There are lots of rocks around here though, so the bigger wheels of a 29er seemed like a good idea to help keep the flow going.

So, I finally settled on the Specialized Stumpjumper Expert Carbon 29er because it was extremely light, not astronomically expensive, and it looks pretty cool. Also, with a few choice parts swaps, I knew I cold make it lighter, possibly even lighter than the far more expensive S-Works model. What you see here is the bike as I raced it at the XTERRA National Championship in Ogden, dirt and all. With these tires, it weighs 20.8 lbs. That includes everything you see in the pictures, including not-so-light-but-durable XTR pedals, 3×10 drivetrain, and 4″ of plush Fox travel. Other parts highlights include:
• Stan’s ZTR Race wheels and Raven rear tire
• Race Face Next SL crankset
• SRAM XX rear derailleur, cassette, and brakes
• Edge Composites straight carbon handlebar
• Specialized S-Works Fast Trak LK front tire and Phenom SL saddle
• Thomson Masterpiece seatpost
• Titec carbon bottle cage
• ESI “Racer’s Edge” silicon grips

Yup, that's a 3x10 drivetrain. I'm not a tractor and 2x10 XX wasn't going to give me a low enough gear for the ultra-steep climbing in Colorado.
This just might be the perfect XTERRA race bike.






