Details

⯁ All specifications are subject to change without notice.

Stumpjumper 15 Alloy (2025)

• New M5 alloy frame with integrated SWAT™ Door compartment
• X-Fusion 02 Pro RL shock developed with the Ride Dynamics team, with adjustable rebound and lockout
• RockShox Psylo Silver fork with Motion Control cartridges
• Reliable Shimano MT-420 four-piston brakes
• Shimano Deore 12-speed drivetrain

FRAME

• 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 Collar: Alloy, 38.6mm
• SWAT Components: SWAT internal downtube storage

SUSPENSION

• Rear Shock: X-Fusion 02 Pro RL, Ride Dynamics Trail Tune, rebound adjust, lockout S1:210x52.5mm, S2-S6:210x55mm
• Fork: RockShox, Psylo Silver, Motion Control Damper, 15x110 axle, 44mm offset, S1:140mm of travel, S2-S6:150mm of travel

BRAKES

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

DRIVETRAIN

• Shifter: Shimano Deore, M6100, 12spd
• Rear Derailleur: Shimano Deore, M6100, 12spd, Shadow Plus
• Cassette: Shimano Deore, M6100, 12spd w/Hyperglide+, 10-51t
• Chain: Shimano Deore, M6100, 12-speed
• Crankset: Shimano Deore, M6120, 30T ring, 55mm chainline, S1-S3:165mm, S4-S6: 170mm

WHEELS

• 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
• Rear Hub: Alloy, sealed cartridge bearings, 12x148mm thru-axle, 28h
• Front Tire: Butcher, GRID TRAIL casing, GRIPTON® T9 compound, 2Bliss Ready, 29x2.3"
• Rear Tire: Eliminator, GRID TRAIL casing, GRIPTON® T7 compound, 2Bliss Ready, S1-S2: 27.5x2.3, S3-S6: 29x2.3"
• Inner Tubes: Standard, Presta valve

WHEELS & TIRES

• Spokes: Stainless, 14g

COCKPIT

• Stem: Alloy Trail Stem, 35mm bar bore
• Grips: Specialized Trail Grips
• Saddle: Bridge, Steel rails, S1-S2: 155mm, S3-S6: 143mm
• Seatpost: TranzX Dropper, remote SLR LE lever, 34.9, S1: 125mm, S2: 150mm, S3: 170mm, S4-S6: 200mm
• Handlebar: 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

WEIGHT

• Weight: 16.57 kg (36 lb, 8.5 oz)
• Measured Size: S4

The manufacturer reserves the right to make changes to the product information contained on this site at any time without notice, including with respect to equipment, specifications, models, colours, materials and pricing. Due to supply chain issues, compatible parts may be substituted at any time without notice. The prices shown are the manufacturer's suggested retail prices.