S-Works Stumpjumper 29
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S-Works Stumpjumper 29

Part No.  
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S-Works Stumpjumper 29
Overview
Technical Specifications
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No-nonsense, unadulterated speed—that's what our S-Works Stumpjumper Di2 brings to the table. It's made from our finest carbon fiber, and it's built off of our revolutionary XC 29 Geometry for explosive power, incredible climbing prowess, and nimble handling. At the rear, the hardtail design with razor thin seatstays blends maximum pedaling efficiency with added compliance. Add to this our Brain technology at the RockShox RS-1 fork that differentiates between rider and trail input to stay firm under effort and plush over bumps, a full Shimano XTR Di2 groupset, and hand-built carbon wheels, and you have a bike that sacrifices nothing in its pursuit of speed.
  • Casing the wheels are 29x2.0" S-Works Fast Trak tires at the front and rear. Together, the tires provide a heightened level of fast-rolling traction and reliable protection that's well suited to the rigors of cross country racing.
  • RockShox RS-1 Brain fork is arguably the most sought-after fork in XC racing. Compared to a traditional fork, its inverted design creates a carbon fiber upper that provides superior stiffness, while behaving with more sensitivity to small bumps and more control over larger hits. And with Brain technology, these characteristics are amplified and even more efficient. It also includes our Spike Valve technology that minimizes yaw in cornering, while providing maximum travel in high velocity impacts.
  • Roval Control SL 29 carbon fiber wheels are lightweight for climbs, hand-built for precision and durability, stiff for explosive sprints and nimble handling, and most importantly, exceptionally fast for hard, sustained efforts come race day.
  • Drivetrain duties are handled by the revolutionary Shimano XTR Di2 11-speed groupset, with 36/26T gearing up front and 11-40t at the rear. The first ever electronic mountain groupset, it provides unparalleled shift precision, reliability, and accuracy, making it the secret weapon in any racer's arsenal.
  • To provide the optimal blend of stiffness, light weight, and strength, we constructed the frame from our FACT 11m carbon fiber. And when combined with our XC 29 Geometry, the Stumpjumper is guaranteed to deliver uncompromising, blistering speed and agile handling come race day—no matter the course.

Technical Specifications

DRIVETRAIN
CHAIN Shimano XTR, 11-speed
BOTTOM BRACKET Praxis, PF30, OS press-in bearings, sealed cartridge
CRANKSET Shimano XTR, Hollowtech, 11-speed, 36/26T
FRONT DERAILLEUR Shimano XTR Di2, 11-speed
SHIFT LEVERS Shimano XTR Di2, 11-speed
CASSETTE Shimano XTR, 11-speed, 11-40t
REAR DERAILLEUR Shimano XTR Di2 Shadow Plus, 11-speed
SUSPENSION
FORK RockShox RS-1 Brain, Solo Air spring, S: 80mm travel, M/L/XL: 95mm travel, Spike Valve, top-mount Brain Fade adjust, rebound adjust, inverted design, tapered carbon crown/steerer, 46mm offset, 15mm Maxle Ultimate thru-axle
WHEELS
FRONT HUB Roval Control SL, Torque Tube
REAR HUB Roval Control SL 142+, Torque Tube, SRAM XX1 XD driver body
INNER TUBES Standard, Presta valve
SPOKES DT Swiss Revolution
RIMS Roval Control SL 29, carbon, disc
FRONT TIRE S-Works Fast Trak, 120TPI, 2Bliss Ready, folding bead, 29x2.2""
REAR TIRE S-Works Fast Trak, 120TPI, 2Bliss Ready, folding bead, 29x2.0""
COCKPIT
SADDLE Body Geometry S-Works Phenom, carbon rails, 143mm
SEATPOST S-Works FACT carbon, 20mm offset, 27.2mm
STEM Syntace F109, 6-degree rise
HANDLEBARS Specialized FACT carbon, 8-degree backsweep, 6-degree upsweep, 10mm rise, 720mm, 31.8mm
GRIPS Specialized Sip Grip, light lock-on, half-waffle, S/M: regular thickness, L/XL: XL thickness
BRAKES
FRONT BRAKE Shimano XTR, hydraulic disc, Ti-metallic pads, 160mm Ice-Tech rotor
BRAKE LEVERS Shimano XTR, carbon lever, I-spec
REAR BRAKE Shimano XTR, hydraulic disc, Ti-metallic pads, 160mm Ice-Tech rotor
ACCESSORIES
PEDALS Nylon, CEN std., w/ toe clips
FRAMESET
HEADSET 1-1/8"" upper, 1-1/2"" lower, threadless, Campy style, cartridge bearings
SEAT BINDER Specialized, 7050 alloy, single Ti bolt, 31.6mm
FRAME FACT 11m carbon, XC 29 Geometry, FACT IS construction, tapered head tube, carbon PF30 BB, internal cable routing, 142mm dropouts, PM 160 rear brake, replaceable alloy derailleur hanger

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