No need to fret—we haven’t forgotten about all you alloy fans out there. In fact, the new Stumpjumper Comp Alloy 29 may be the most radically designed alloy bike ever made. For real, though. And with new tube shapes and an asymmetrical design, it's going to exceed all of your expectations of how a trail bike should ride.
Our design goal for the new Stumpjumper was simple—build the ultimate trail bike, one that feels telepathic. And it turns out that this feeling all comes down to stiffness. Think of it this way: when the frame's telling your hands one thing and your feet another, your brain gets confused with the imbalance and the bike feels unstable. In order to fix this, we had to get to work on dialing-in the material and shapes.
M5 alloy chassis and rear end, asymmetrical design, 29 Trail Geometry, threaded BB, fully enclosed internal cable routing, 12x148mm dropouts, sealed cartridge bearing pivots, replaceable derailleur hanger, 140mm of travel
FOX FLOAT Rhythm 34, GRIP Damper, 51mm offset, 2-position sweep adjust, 15x110mm, tapered alloy steerer, 150mm of travel
FOX FLOAT DPS Performance, Rx Trail Tune, rebound and 3-position compression adjust, 210x50mm
Specialized, sealed cartridge bearings, 15x110mm spacing, 28h
Specialized, sealed cartridge bearings, 12x148mm thru-axle, 28h
Roval Traverse 29, hookless alloy, 29mm inner width, tubeless ready, 28h
Presta, 40mm valve
Butcher, GRID casing, GRIPTON® compound, 2Bliss Ready, 29x2.6"
Purgatory, GRID casing, GRIPTON® compound, 2Bliss ready, 29 x2.6"
RaceFace Aeffect, 24mm spindle, 170mm crankarm
Threaded BB, 24mm spindle
Shimano SLX, 11-speed
Shimano XT, Shadow Plus, GS cage, 11-speed
Shimano SLX, 11-speed, 11-46t
KMC X11, 11-speed w/ Missing Link™
Shimano SLX, hydraulic disc, resin pads, 200mm rotor
Shimano SLX, Hydraulic Disc, Resin Pad
Specialized, 6061 alloy, 6-degree upsweep, 8-degree backsweep, 27mm rise, 780mm width
Specialized Sip Grip, half-waffle, S/M: regular thickness, L/XL: XL thickness
Specialized Trail, 3D forged alloy, 4-bolt, 6-degree rise
Body Geometry Phenom Comp, Adaptive Edge design, hollow Cr-Mo rails, 143mm
X-Fusion Manic, infinite adjustable, two-bolt head, bottom mount cable routing, remote SRL LE lever, 34.9mm, S: 125mm, M/L/XL: 150mm of travel
Specialized bolt-type, alloy, 38.6mm