The Specialized Stumpjumper 15 Comp 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 mattersyou? Check, check, check.

UNMATCHED PERSONALIZATION: Six-way geometry adjustment, mixed wheel or 29, tunable spring curve, and more.

WHEEL CHOICE: With our aftermarket 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.

– 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

Technical Specifications

Frameset

SWAT

SWAT internal downtube storage

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

Note: S1 and S2 sizes are only compatible with mixed wheel 27.5″/29″ setup. S3 – S6 are compatible with mixed wheel or full 29″.

Seat Binder

Alloy, 38.6mm

Suspension

Rear Shock

X-Fusion 02 Pro RL, Ride Dynamics Trail Tune, rebound adjust, lockout S1:210×52.5mm, S2-S6:210x55mm

Fork

RockShox, Psylo Silver, Motion Control Damper, 15×110 axle, 44mm offset, S1:140mm of travel, S2-S6:150mm of travel

Brakes

Rear Brake

Shimano, BR-MT420, 4-piston caliper, hydraulic disc, S1-S2: 180mm, S3-S6: 203mm

Front Brake

Shimano, BR-MT420, 4-piston caliper, hydraulic disc, 203mm

Drivetrain

Chain

Shimano Deore, M6100, 12-speed

Crankset

Shimano Deore, M6120, 30T ring, 55mm chainline, S1-S3:165mm, S4-S6: 170mm

Cassette

Shimano Deore, M6100, 12spd w/Hyperglide+, 10-51t

Rear Derailleur

Shimano Deore, M6100, 12pd, Shadow Plus

Shift Levers

Shimano Deore, M6100, 12spd

Wheels & Tires

Rear Tire

Eliminator, GRID TRAIL casing, GRIPTON T7 compound, 2Bliss Ready, S1-S2: 27.5×2.3, S3- S6: 29×2.3″

Rear Hub

Alloy, sealed cartridge bearings, 12x148mm thru-axle, 28h

Rims

Specialized Alloy, Tubeless Ready, 29mm internal width, 28h, Front: 29, Rear: S1-S2: 27.5, S3- S6: 29

Front Hub

Alloy, sealed cartridge bearings, 15x110mm thru-axle, 28h

Spokes

Stainless, 14g

Inner Tubes

Standard, Presta valve

Front Tire

Butcher, GRID TRAIL casing, GRIPTON T9 compound, 2Bliss Ready, 29×2.3″

Cockpit

Stem

Alloy Trail Stem, 35mm bar bore

Saddle

Bridge, Steel rails, S1-S2: 155mm, S3-S6: 143mm

Handlebars

Specialized, 6000 series alloy, 6-degree upsweep, 8-degree backsweep. S1-S2: 780 width, 20mm rise: S3-S4: 800 width, 30mm rise: S5-S6: 800 width, 40mm rise

Grips

Specialized Trail Grips

SeatPost

TranzX Dropper, remote SLR LE lever, 34.9, S1: 125mm, S2: 150mm, S3: 170mm, S4-S6: 200mm

Weight

16.57 kg (36 lb, 8.5 oz)

Weight Size

S4