The Stumpjumper Alloy brings all-new suspension kinematics and progressive geometry into a full-alloy package that’s both lightweight and incredibly durable. Outfitted with a no-fuss SRAM SX 12-speed groupset, this bike is your all-access pass to trail adventure.
Highlights
The Trail Benchmark
The all-new Stumpjumper is built to excel on any kind of trail, for every style of rider. Lightweight yet tough, it delivers a responsive chassis, refined suspension, and modern geometry for unmatched versatility and control.
The Sweetest 130mm of Travel You’ll Ever Ride
Hours of development and testing refined the 130mm suspension for all-around performance—eating big terrain like a gravity-fed beast, while climbing efficiently and handling like a dream.
Progressive Geometry
S-Sizing geometry hits the perfect modern balance: long, low, and slack with a steep seat tube angle and short offset fork. FlipChip adjustability allows you to fine-tune the setup to your terrain and style.
Rider-First Engineered™
Each frame size delivers the same balanced handling and stiffness, ensuring every rider gets benchmark performance—from S1 to S6.
Technical Specifications
Frameset
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 travel
Seat Binder
Alloy, 38.6mm
Suspension
Fork
RockShox 35 Silver, Solo Air, 44mm offset, rebound adjust, TurnKey lockout, 15x110mm Boost™ Maxle® Lite thru-axle, 140mm travel
Rear Shock
X-Fusion 02 Pro RL, Rx Trail Tune, rebound adjust, lockout
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S1: 190x42.5mm
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S2–S6: 190x45mm
Brakes
Front Brake
Tektro Gemini Comp hydraulic disc, resin pad, 200mm rotor
Rear Brake
Tektro Gemini Comp hydraulic disc, resin pad, 180mm rotor
Drivetrain
Shift Levers
SRAM SX Eagle, trigger, 12-speed
Rear Derailleur
SRAM SX Eagle, 12-speed
Cassette
SRAM PG-1210 Eagle, 11-50t
Chain
SRAM SX Eagle, 12-speed
Crankset
SRAM SX Eagle
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S1: 165mm
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S2–S5: 170mm
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S6: 175mm
Chainring
30T
Bottom Bracket
SRAM Powerspline
Wheels & Tires
Rims
Double-wall alloy, 27mm internal width, 28h
Front Hub
Specialized alloy, sealed cartridge bearings, 6-bolt, 15x110mm thru-axle, 28h
Rear Hub
Alloy, sealed cartridge bearings, 12x148mm thru-axle, 28h
Spokes
Stainless, 14g
Front Tire
Butcher, GRID casing, GRIPTON® T7 compound, 29x2.3"
Rear Tire
Purgatory, GRID casing, GRIPTON® T7 compound, 29x2.3"
Inner Tubes
Standard, Presta Valve
Cockpit
Stem
Alloy Trail Stem, 35mm bar bore
Handlebars
Specialized 6061 Alloy, 6° upsweep, 8° backsweep, 30mm rise, 780mm width
Grips
Specialized Trail Grips
Saddle
Body Geometry Bridge Saddle, steel rails
Seatpost
TranzX Dropper, 34.9mm
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S1: 100mm
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S2: 125mm
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S3: 150mm
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S4–S5: 170mm
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S6: 200mm
Weight
Weight: 15.93 kg (35 lb, 1.9 oz)
Measured Size: S4
