Stumpjumper 15 EVO Alloy is here to obliterate every trade-off in the trail game. Devour bumps like a big bike? Check. Short-travel control, playfulness, and efficiency? Double check. How about a heaping helping of personalization to make it perfect for the only rider who really matters—you?  Check, check, check.

KINEMATICS PERFECTED: As the quintessential trail bike, Stumpjumper 15 Alloy balances efficiency and optimal bump force management. For the anti-squat on Stumpjumper 15 Alloy, we struck a balance between the previous Stumpjumper and Stumpjumper EVO, as both had excellent pedaling characteristics.

HONED GEOMETRY: This bike’s geometry delivers big bike capability when you need it, a nimble feel in tight sections, and lively, efficient climbing manners. The generous cockpit centers you on the bike, optimizing traction and corner control. The low bottom bracket, slack head tube angle, and optimized fork offset keep things stable in the rough.

RIDE YOUR WAY: The Stumpjumper 15 Alloy seamlessly integrates benchmark geo adjustability, making it the most personalizable trail bike ever. Six distinct geometry settings allow you to hone performance for any style and any terrain. The head angle and bottom bracket can be fine-tuned for stability or clearance.

FORM FOLLOWS FUN: We can make a frame as stiff as we want, but there’s such a thing as too stiff. To be one with the bike requires engineered compliance in the frame. We engineered the M5 Alloy chassis—front end, rear end, and the link between them—as a single unit that hits the stiffness target we established for trail riding.

WHEEL SIZE: All coil-sprung models come with mixed wheels.

WHEEL CHOICE: With our aftermarket link shock links, you can choose between big wheels front and rear or mix things up with a 27.5” rear for a more responsive and playful ride. No matter what you choose, geometry is unaffected.

CARRY IT ALL: SWAT on Stumpjumper 15 elevates downtube storage, an innovation we pioneered.

MORE RELENTLESS THAN YOU: Our full-suspension bikes are built to be relentless, designed to endure years of hard riding, and backed by the best support and programs to keep you on the trail. Our unbeatable lifetime, no-questions-asked replacement suspension pivot bearings to the original owner is just one way we've got you covered.

• All-new M5 alloy frame with SWAT door integration
• Ride Dynamics tuned X-Fusion 02 Pro RL shock with adjustable rebound and lockout
• RockShox Psylo Silver fork with Motion Control Damper
• Reliable SRAM DB6 4-piston brakes
• 12-speed SRAM NX drivetrain
• Lifetime replacement of suspension pivot bearings to the original owner

Frame

M5 alloy chassis and rear-end, Trail Geometry, SWAT™ Door integration, head tube angle adjustment, threaded BB, internal cable routing, 12x148mm dropouts, sealed cartridge bearing pivots, SRAM UDH compatible, 145mm of travel

Seat Binder: Alloy, 38.6mm

Suspension

Rear Shock: X-Fusion 02 Pro RL, Ride Dynamics Trail Tune, rebound adjust, lockout, 210x55mm
Fork: RockShox, Psylo Silver, Motion Control Damper, 15x110 axle, 44mm offset, S1:150mm of travel, S2-S6:160mm of travel

Brakes

Front Brake: SRAM DB6, 4-piston caliper, hydraulic disc
Rear Brake: SRAM DB6, 4-piston caliper, hydraulic disc

Drivetrain

Shift Levers: SRAM NX Eagle, trigger, 12-speed
Rear Derailleur: SRAM NX Eagle, 12-speed
Cassette: SRAM NX Eagle, 12-speed, 11-50t
Chain: SRAM NX Eagle, 12-speed
Crankset: SRAM NX Eagle, DUB, S1-S3:165, S4-S6: 170mm, 55CL, 32T
Bottom Bracket: SRAM DUB Threaded Wide

Wheels & Tires

Rims: Specialized Alloy, Tubeless Ready, 29mm internal width, 28h
Front Hub: Specialized alloy front hub disc, sealed cartridge bearings, 6-bolt, 15x110mm thru-axle, 28h
Rear Hub: Specialized alloy rear hub disc, sealed cartridge bearings, 6-Bolt, 12X148mm thru-axle, 28H, HD Steel Fhb
Spokes: Stainless, 14g
Front Tire: Butcher, GRID TRAIL casing, Gripton T9 compound, 29X2.4
Rear Tire: Eliminator, GRID TRAIL casing, GRIPTON® T7 compound, TLR, S1-S2: 27.5x2.4, S3- S6: 29x2.4"
Inner Tubes: Standard, Presta Valve

Cockpit

Stem: Alloy Trail Stem, 35mm bar bore
Handlebars: Specialized, 6000 series alloy, 6-degree upsweep, 8-degree backsweep. S1-S2: 780 width, 20mm rise: S3-S6: 800 width, 50mm rise
Grips: Specialized Trail Grips
Saddle: Body Geometry Bridge Saddle, steel rails, S1-S2:155mm, S3-S6:143mm
SeatPost: TranzX dropper, 34.9mm, S1: 125mm, S2: 150mm, S3: 175mm. S4-S6: 200mm

Accessories

SWAT: Internal SWAT downtube storage

Weight

Weight: 16.79 kg (37 lb, 0.2 oz)
Weight Size: S4