SPECIALIZED S-WORKS STUMPJUMPER 15

The SPECIALIZED Stumpjumper 15 with GENIE technology redefines the concept of a trail bike, combining the advantages of long-travel bikes and the efficiency of lighter, more responsive bikes into a single platform. It is a bike designed to tackle major obstacles with confidence, while simultaneously maintaining agility, control, and climbing performance.

The heart of the project is GENIE technology, an innovative air suspension system that combines the sensitivity and control of a coil spring with the typical progression of air springs. The result is a smoother ride, greater traction, and a significant reduction in bottom-outs, with performance reminiscent of an Enduro bike while maintaining a more contained travel.

The geometry has been designed to offer a balance between stability and maneuverability, with a centralized cockpit, low bottom bracket, and relaxed steering angle. Furthermore, the Stumpjumper 15 is one of the most customizable trail bikes ever: six different geometry configurations, the possibility of mounting mullet or 29" wheels, and compression curve adjustments allow it to be perfectly adapted to your riding style and terrain.

The FACT 11m carbon frame with integrated SWAT 4.0 compartment incorporates advanced technical solutions and offers tool storage in the down tube. The high-level components, with FOX Factory suspension, SRAM XX Eagle T-Type AXS drivetrain, and Roval Traverse SL carbon wheels, complete a build designed for absolute performance.

Key Features:

FACT 11m carbon frame with 145 mm rear travel
GENIE technology for increased traction and control
Adjustable geometry with six configurations
29" wheel compatibility or mullet configuration
FOX Factory suspension with Ride Dynamics tuning
SRAM XX Eagle T-Type AXS electronic drivetrain
Roval Traverse SL carbon wheels
SWAT 4.0 compartment integrated into the down tube

Technical Specifications:

Frame
Frame: FACT 11m carbon chassis, carbon rear triangle and link, Trail Geometry, SWAT integration, head angle adjustment, threaded bottom bracket, internal cable routing, 12x148 mm rear axle, SRAM UDH compatible, 145 mm travel
SWAT Components: internal SWAT 4.0 compartment in the down tube
Seat Collar: alloy, 38.6 mm

Suspension
Fork: FOX Float 36 Factory, GRIP X2 cartridge, full adjustments, 15x110 mm axle, 44 mm offset
Travel: S1 140 mm, S2–S6 150 mm
Shock: FOX Float Factory with GENIE technology, Ride Dynamics tuning, 2-position lever with open mode adjustments

Brakes
Front Brake: SRAM Maven Ultimate, 4-piston caliper, 200 mm HS2 rotor
Rear Brake: SRAM Maven Ultimate, 4-piston caliper
Rotor: 180 mm (S1–S2) / 200 mm (S3–S6)

Drivetrain
Rear Derailleur: SRAM XX Eagle Transmission
Shifter: SRAM AXS Pod Ultimate
Crankset: SRAM XX Eagle, 32T chainring, 55 mm chainline
Crank Length: S1–S3 165 mm / S4–S6 170 mm
Cassette: SRAM XX Eagle SL Transmission, 10–52T
Chain: SRAM XX Eagle SL Transmission
Bottom Bracket: SRAM DUB, 73 mm threaded BSA

Wheels
Rims: Roval Traverse SL II, hookless carbon, 30 mm internal width, tubeless ready
Configuration: front 29", rear 27.5" (S1–S2) or 29" (S3–S6)
Front Hub: DT Swiss 240, 15x110 mm
Rear Hub: DT Swiss 240, 12x148 mm
Spokes: DT Swiss Aerolite
Front Tire: SPECIALIZED Butcher GRID Trail, GRIPTON T9, 29x2.3”
Rear Tire: SPECIALIZED Eliminator GRID Trail, GRIPTON T7
Tires: 27.5x2.3" (S1–S2) / 29x2.3" (S3–S6)

Cockpit
Handlebar: Roval Traverse SL Carbon, 30 mm rise, 6° upsweep, 8° backsweep
Width: 780 mm (S1–S2) / 800 mm (S3–S6)
Stem: Deity, 35 mm length, 35 mm clamp
Grips: Deity Lockjaw
Saddle: SPECIALIZED Power Pro Mirror, titanium rails

Dropper Post
RockShox Reverb AXS, telescopic
Travel: S1 125 mm, S2 150 mm, S3–S6 170 mm

Weight
13.56 kg (without pedals)
Measured size: S4