Product Details

Build it your way! Create your ultimate trail bike to take on everything. 

Stumpjumper 15 EVO 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 matters—you?  Check, check, check.

The biggest innovation on the Stumpjumper 15 Alloy is GENIE. This patent-pending air spring technology we invented grants every trail rider three wishes: the maximum grip and traction of a coil spring feel, better bottom-out prevention than a standard air spring, and the ability to tune mid-stroke and end-stroke support independently. GENIE makes the Stumpjumper 15 Alloy ride like a bike with more travel. For example, the Stumpjumper 15 Alloy (with 145 mm rear wheel travel) and our Enduro (170 mm travel) both use 101 mm of travel to absorb a 1080 N bump force.

The Stumpjumper 15 Alloy seamlessly integrates benchmark geo adjustability, making it the most personalizable trail bike ever. Six distinct geometry settings allow you to hone performance for any style, any terrain. The head angle and bottom bracket height can be fine-tuned for stability or clearance.

Ready for 29" wheels but 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.

Our full-suspension bikes are built to be relentless, designed to endure years of hard riding, and backed by the best support and policies to keep you on the trail. Our unbeatable lifetime, no-questions-asked replacement suspension pivot bearings to the original owner is just one way we've got you covered.

Suitable for 150-160mm travel suspension forks.

• 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
• SWAT downtube storage
• Seat Binder: Alloy, 38.6mm
• Rear Shock: FOX FLOAT X Performance with Specialized GENIE Shock Tech, Ride Dynamics Trail Tune, 2-position lever, LSR adjustment, 210x55mm
• Weight: 4.46 kg
• Lifetime replacement of suspension pivot bearings to the original owner
• Satin Brushed Aluminum finish

About Specialized
As their motto says, “Made for riders, by riders”. Specialized made the first production mountain bike in 1974, and since then they have been industry leaders. From lightweight carbon race bikes, innovative kids bikes, class leading e-bikes and tyres & accessories, Specialized continue to push boundaries.