The Stumpjumper 15 Alloy is built to crush compromises, delivering big-bike bump absorption with short-travel efficiency, control, and playfulness. Its refined kinematics strike the perfect balance between pedaling performance and bump management, while honed geometry offers stability at speed and agility in tight sections. With six geometry settings and adjustable wheel configurations, it's the most personalizable trail bike ever—tailored for any rider and terrain. The M5 Alloy chassis is engineered for the ideal blend of stiffness and compliance, and features like SWAT downtube storage and coil-sprung mixed wheels ensure versatility and durability. Backed by a lifetime suspension pivot bearing replacement, it’s built to ride hard and last. Key Features 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 Shimano MT-420 4-piston brakes 12-speed Shimano Deore drivetrain Lifetime replacement of suspension pivot bearings to the original owner Specifications Frameset 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 Fork: RockShox, Psylo Silver, Motion Control Damper, 15x110 axle, 44mm offset, S1:140mm of travel, S2-S6:150mm of travel Rear Shock: X-Fusion 02 Pro RL, Ride Dynamics Trail Tune, rebound adjust, lockout S1:210x52.5mm, S2-S6:210x55mm Wheels Rims: Specialized Alloy, Tubeless Ready, 29mm internal width Tyres: Butcher/Eliminator, GRID TRAIL casing, GRIPTON® T9 compound, 2Bliss Ready, 2.3 Drivetrain Crankset: Shimano Deore, M6120, 30T ring, 55mm chainline Shifters: Shimano Deore, M6100, 12spd Rear Derailleur: Shimano Deore, M6100, 12pd, Shadow Plus Chain: Shimano Deore, M6100, 12-speed Cassette: Shimano Deore, M6100, 12spd w/Hyperglide+, 10-51t Components Handlebar: Specialized, 6000 series alloy, 6-degree upsweep, 8-degree backsweep Stem: Alloy Trail Stem, 35mm bar bore Grips: Specialized Trail Grips Brakes: Shimano, BR-MT420, 4-piston caliper, hydraulic disc Saddle: Bridge, Steel rails Seatpost: TranzX Dropper, remote SLR LE lever, 34.9 Specialized Stumpjumper Sizing S1 (XS) S2 (S) S3 (M) S4 (L) S5 (XL) S6 (XXL) Rider Height (cm) 150 - 160 157 - 173 165 - 180 173 - 188 178 - 193 188 - 203 Rider Height (in) 4'11'' - 5'3'' 5'2'' - 5'8'' 5'5'' - 5'11'' 5'8'' - 6'2'' 5'10'' - 6'4'' 6'2'' - 6'8''