2025 Specialized Stumpjumper 15 Comp Alloy Bike

2025 Specialized Stumpjumper 15 Alloy – Trail Dominance Redefined

The 2025 Stumpjumper 15 Alloy is built to crush every trade-off in trail riding. Long-travel bump absorption with short-travel playfulness? Yes. Ultimate traction and precision control? Absolutely. Personalized geometry and wheel setup? You got it.

Whether you're chasing KOMs or winding through technical singletrack, this is the most capable, tunable alloy trail bike ever made.

Key Performance Features

GENIE Shock Technology

The heart of the Stumpjumper 15 is GENIE, Specialized’s patent-pending air spring that redefines suspension performance.

• Coil-like small-bump compliance

• Air spring progression for bottom-out protection

• Tunable mid-stroke and end-stroke support

• 57% better traction compared to standard air shocks

• 39% fewer bottom-outs

• 16.3% better bump force management

GENIE gives you the best of both worlds: small bump sensitivity with aggressive impact control.

Fully Adjustable Geometry

• Six-way geometry adjustment

• Compatible with 29” or mixed-wheel (mullet) setups

• Adjustable head tube angle and bottom bracket height

• Balanced for climbing, stable on descents, and agile in tight corners

SWAT Internal Storage

Bring tools, snacks, and gear with you—securely stored inside the downtube. No need for a pack or bulky saddle bag.

Component Highlights

• Frame: M5 Alloy, 145mm rear travel, with SWAT storage and adjustable geometry

• Fork: FOX FLOAT 36 Rhythm, GRIP damper, 150mm travel (S2–S6)

• Shock: FOX FLOAT Performance with GENIE air spring and Ride Dynamics Trail Tune

• Brakes: TRP Trail EVO 4-piston hydraulic disc brakes

• Drivetrain: Shimano SLX 12-speed

• Wheels: Tubeless-ready alloy rims with 30mm internal width

• Tires: Butcher front and Eliminator rear, GRID TRAIL casing with GRIPTON compound

• Dropper Post: X-Fusion Manic with size-specific travel and remote lever

• Weight: 35 lb, 10 oz (16.17 kg) – size S4

Built to Last. Backed for Life.

Every Specialized full-suspension bike is engineered for years of hard riding and backed by lifetime support. The Stumpjumper 15 Alloy includes lifetime replacement of suspension pivot bearings for the original owner—no questions asked.

Why Buy from Goodwynn’s

• Cost-plus pricing available through our Membership Program

• Professional bike builds and tuning

• Local support and expert service

• Test rides and on-trail advice from real riders

Available Now

The 2025 Stumpjumper 15 Alloy is in stock and ready to ship or pick up in-store.
Have questions? Contact us or stop by to learn more.

Looking for the most advanced alloy trail bike on the market? This is it.