The world's first mountain bike is continuing to develop at the fast rate that helped it to take its first steps. The Stumpjumper cultivates years of engineering to provide a fast, fun and comfortable feel on the trail. In its short-travel design, the Stumpjumper becomes even nippier promising to pump you full of adrenaline. 29" wheels help to maintain your hard-earned momentum by decreasing the angle of attack between you and the surface of the trail, meaning your ride is not only faster but more comfortable. The TranzX dropper seatpost puts you in control of your position for high-speed descents that require constant adaption. Finally, SRAM's 1x12 speed groupset, with a 50T cassette, provides plenty of gear range without the hassle of a front derailleur, meaning you can spend even more time on the trail rather than sorting your bike out.
The ultimate trail bike
The innovative sidearm frame design makes a lighter, better-handling bike. By directly connecting all three mounting points of the rear-end and shock to the frame, Specialized has increased both stiffness and performance over bumps. End result? Total control.
Specialized's in-house suspension-tuning team develops custom shock tunes, perfectly paired to each bike’s kinematics. Specialized call this Rx Tune and while it’s not the easy way to build a suspension bike, it’s worth it. You feel Rx Tune as perfectly-balanced suspension.
Smart part picks
Frame - M5 alloy chassis and rear-end, an asymmetrical design, 29 Trail Geometry, threaded BB, fully enclosed internal cable routing, 12x148mm dropouts, sealed cartridge bearing pivots, replaceable derailleur hanger, 120mm of travel
Seat Binder - Specialized bolt-type, alloy, 38.6mm
Fork - RockShox Recon RL, Motion Control damper with low-speed compression to lockout, 51mm offset, rebound adjust, 15x110mm Boost™ Maxle® Lite thru-axle, 130mm of travel
Rear Shock - X-Fusion 02 Pro RL, Rx Trail Tune, rebound adjust, lockout 190x42.5mm
Chain - SRAM SX Eagle, Powerspline, 170mm
Bottom Bracket - SRAM Powerspline
Crankset - SRAM SX Eagle, Powerspline, 170mm
Shift Levers - SRAM SX Eagle, trigger, 12-speed
Cassette - SRAM PG-1210 Eagle, 11-50t
Chainrings - Steel, 32T
Rear Derailleur - SRAM SX Eagle
Front Hub - Specialized, sealed cartridge bearings, 15x110mm thru-axle, 32h
Rear Hub - Specialized, sealed cartridge bearings, 12x148mm thru-axle, 28h
Spokes - Stainless, 14g
Rims - Double-wall alloy, 27mm internal width
Front Tyre - Eliminator, GRID TRAIL casing, GRIPTON® compound, 2Bliss Ready, 29x2.3"
Rear Tyre - Purgatory, GRID Casing, 2Bliss Ready, 29x2.3"
Front Brake - Tektro Gemini Comp, hydraulic disc, resin pad, 200mm
Rear Brake - Tektro Gemini Comp, hydraulic disc, resin pad, 180mm
Saddle - Body Geometry Myth -155 XS/S, Body Geometry Henge:143 M/L/XL, steel rails
Seatpost - TransX dropper, 34.9mm, XS: 100mm, S: 125mm, ML/XL: 150mm Travel
Stem - Specialized, 3D-forged alloy, 4-bolt, 7-degree rise
Handlebars - Specialized Trail, 6061 alloy, 8-degree backsweep, 6-degree upsweep, 27mm rise, 780mm, 31.8mm clamp
Grips - Specialized Sip Grip, half-waffle, slip-on