The 2021 Specialized Stumpjumper Comp Alloy is a 29″ aluminum frame full suspension trail bike with high-end components.
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1 × 12 — 12 speed
The Stumpjumper Comp Alloy is easier to ride up hills than similar bikes.
The Stumpjumper Comp Alloy won‘t keep up with similar bikes while riding downhill or sprinting.
Based on build material and quality level of the frame, fork, wheelset, groupset, suspension system, and more. Learn more
|Frame||Alloy chassis and rear-end, asymmetrical design, 29 Trail Geometry, horst pivot BB adjustment, threaded BB, 12x148mm dropouts, sealed cartridge bearing pivots, replaceable derailleur hanger, 130mm of travel|
|Fork||FOX FLOAT 34 Rhythm, GRIP damper, two position Sweep adjustment, 15x110mm QR axle, 44mm offset,140mm of travel|
|Rear Shock||FOX FLOAT DPS Performance, Rx Trail Tune, rebound and 3-position compression adjust, S1:190x42.5mm, S2-S6: 190x45mm|
|Bottom Bracket||SRAM DUB, BSA 73mm, Threaded|
|Stem||Alloy Trail Stem, 35mm bar bore|
|Handlebar||Specialized, 6061 alloy, 6-degree upsweep, 8-degree backsweep, 30mm rise, 800mm width|
|Saddle||Bridge Comp, Hollow Cr-mo rails, 155/143mm|
|Seatpost||X-Fusion Manic, infinite adjustable, remote SRL LE lever, 34.9 (S1:100mm, S2: 125mm, S3: 150mm, S4/S5: 170mm, S6: 190mm)|
|Rear Derailleur||SRAM NX Eagle, 12-speed|
|Crank||SRAM NX Eagle, DUB, S1:165mm, S2-S5: 170mm, S6: 175mm, Steel, 30T|
|Shifters||SRAM NX Eagle, trigger, 12-speed|
|Cassette||SRAM NX Eagle, 12-speed, 11-50t|
|Chain||SRAM NX Eagle, 12-speed|
|Brakes||SRAM G2 R, 4-piston caliper, hydraulic disc, 200mm|
|Rims||Roval 29, hookless alloy, 30mm inner width, tubeless ready|
|Spokes||DT Swiss Industry|
|Front Hub||Alloy, sealed cartridge bearings, 15x110mm thru-axle, 28h|
|Rear Hub||Alloy, sealed cartridge bearings, 12x148mm thru-axle, 28h|
|Tires||Butcher, GRID casing, GRIPTON® compound, 29x2.3"|