Specialized Stumpjumper 15 Expert Bike - Gloss Grey

Specialized Stumpjumper 15 Expert – The Trailbike Without Compromises

The Stumpjumper 15 Expert is the ultimate trail mountain bike, designed to offer the best of both worlds: the capability of an enduro bike and the agility of an XC. Thanks to the innovative GENIE suspension, a patented technology that turns every trail into a smooth, precise, and responsive playground.

GENIE Technology: The suspension revolution

The heart of the Stumpjumper 15 Expert is the GENIE suspension, which combines:

• Control and sensitivity of a coil spring

• Progression of an air spring

• Adjustable platform to suit every riding style

Field-tested performance:

• +16.3% impact force management compared to air springs

• +57% more traction

• -39% bottom out

With 145 mm of rear travel, the Stumpjumper 15 performs like a 170 mm bike, but with surprising responsiveness thanks to its lightweight architecture and optimized trail geometry.

Adjustable geometry, tailored performance

• 6 geometric configurations to suit every terrain

• Adjustment of steering angle and bottom bracket height

• Compatibility mullet or full 29” without altering geometry

The result? A highly customizable bike that precisely responds to your preferences, maintaining stability on technical terrain and agility in tight passages.

Expert components

The Stumpjumper 15 Expert features high-end components to ensure top performance in every condition:

• Frame: Lightweight and responsive FACT 11m Carbon

• Fork: FOX FLOAT 36 Performance Elite with GRIP X2 damper

• Shock absorber: FOX FLOAT Performance Elite with GENIE technology

• Wheels: Roval Traverse alloy, DT Swiss 370 hubs

• Drivetrain: SRAM GX Eagle T-Type AXS electronic 12v

• Brakes: SRAM Maven Bronze, 4 pistons, HS2 rotors

• Dropper post: PNW Loam with tool-less adjustment

• SWAT™ 4.0 system: integrated storage in the down tube

• Rear triangle bearing warranty: Lifetime supply for the original purchaser

Master every trail

Whether you're tackling technical descents, twisty singletracks, or challenging climbs, the Stumpjumper 15 Expert is ready to follow you anywhere. Reliable, powerful, and customizable, it represents excellence in the world of trail mountain bikes.

Technical Specifications

Frame

• Material: FACT 11m carbon

• Geometry: Trail, adjustable

• Integration: SWAT™ Door 4.0

• Rear triangle: 145 mm travel

• Compatibility: UDH, threaded BB, electronic transmission

• Details: Internal cable routing, sealed cartridge bearings

Suspensions

• Rear shock: FOX FLOAT Performance Elite, GENIE Shock Tech, Ride Dynamics Trail Tune, LSR adjustment, 2-position lever, Open mode tuning (S1: 210x52.5mm, S2-S6: 210x55mm)

• Front fork: FOX FLOAT 36 Performance Elite, GRIP X2 damper, HS/LS rebound & compression adjustment, 150 mm travel (S2-S6), 140 mm (S1)

Brakes

• Front/rear brake: SRAM Maven Bronze, 4-piston caliper, HS2 rotors (200 mm front, 180/200 mm rear depending on size)

Drivetrain

• Controls: SRAM AXS POD Controller

• Rear derailleur: SRAM GX Eagle Transmission

• Cassette: SRAM GX Eagle, 12 speed, 10-52t

• Chain: SRAM GX Eagle Transmission Flattop

• Crankset: SRAM GX Eagle, 32T, integrated protection, 55 mm chainline (S1–S3: 165 mm, S4–S6: 170 mm)

• Bottom bracket: SRAM DUB, BSA 73 mm, threaded

Wheels

• Rims: Roval Traverse alloy, hookless, 30 mm, tubeless ready

• Hubs: DT Swiss 370, 15x110 mm front, 12x148 mm rear, 28 holes

• Spokes: Sapim Force

• Tires:

  • Front: Butcher GRID TRAIL, GRIPTON® T9, 29x2.3"

  • Rear: Eliminator GRID TRAIL, GRIPTON® T7, S1-S2: 27.5x2.3”, S3–S6: 29x2.3”

Cockpit

• Handlebar: Specialized 6000 alloy, upsweep 6°, backsweep 8°

  • S1-S2: 780 mm, rise 20 mm

  • S3-S4: 800 mm, rise 30 mm

  • S5-S6: 800 mm, rise 40 mm

• Stem: Alloy Trail Stem, 35 mm

• Grips: Deity Lockjaw

• Saddle: Bridge Comp, Hollow Cr-Mo (S1-S2: 155 mm, S3-S6: 143 mm)

• Seatpost: PNW Loam Dropper, tool-less adjustment

  • S1: 125 mm, S2: 150 mm, S3: 170 mm, S4-S6: 200 mm

Product Details

• Identifier: 221401

• Weight: 14.47 kg (size S4)

• Compatibility: Electronic drivetrains only

• Warranty: Rear triangle bearings provided for life to the original purchaser

Note Well

Technical specifications may change without notice depending on component availability.
Product images are for illustrative purposes only and may not exactly reflect the described features.

Specialized Stumpjumper 15 Expert is the perfect balance of power, control, and versatility. A modern trail bike designed for those who accept no compromises. If you seek top performance and absolute customization, this is the MTB for you.