The Stumpjumper 15 Alloy is here to eliminate every compromise in the trail biking experience. Want to tackle bumps like a big bike? Check. Need short-travel control, playfulness, and efficiency? Double check. How about a generous dose of personalization to make it perfect for the only rider that truly matters—you? Check, check, check. **KINEMATICS PERFECTED:** As the ultimate trail bike, the Stumpjumper 15 Alloy strikes a balance between efficiency and optimal bump force management. For the anti-squat characteristics, we found a sweet spot between the previous Stumpjumper and Stumpjumper EVO, both of which boasted excellent pedaling performance. **HONED GEOMETRY:** This bike’s geometry provides big bike capabilities when needed, a nimble feel in tight sections, and lively, efficient climbing performance. The spacious cockpit centers you on the bike, optimizing traction and cornering control. The low bottom bracket, slack head tube angle, and optimized fork offset ensure stability in rough terrain. **RIDE YOUR WAY:** The Stumpjumper 15 Alloy features benchmark geo adjustability, making it the most customizable trail bike ever. With six distinct geometry settings, you can fine-tune performance for any riding style and terrain. The head angle and bottom bracket can be adjusted for either stability or clearance. **FORM FOLLOWS FUN:** We can create a frame as stiff as we like, but there is such a thing as too stiff. To truly connect with the bike, engineered compliance in the frame is essential. We designed the M5 Alloy chassis—front end, rear end, and the link between them—as a single unit that meets our stiffness targets for trail riding. **WHEEL SIZE:** All coil-sprung models come equipped with mixed wheels. **WHEEL CHOICE:** With our aftermarket link shock links, you can opt for big wheels front and rear or mix it up with a 27.5” rear for a more responsive and playful ride. Regardless of your choice, the geometry remains unaffected. **CARRY IT ALL:** The SWAT system on the Stumpjumper 15 enhances downtube storage, an innovation we pioneered. **MORE RELENTLESS THAN YOU:** Our full-suspension bikes are built to be relentless, designed to withstand years of hard riding, and supported by the best programs to keep you on the trail. Our unbeatable lifetime, no-questions-asked replacement of suspension pivot bearings for the original owner is just one way we ensure your ride is covered. - All-new M5 alloy frame with SWAT door integration - Roval Traverse alloy wheels with DT Swiss hubs - Ride Dynamics Tuned FOX DHX Factory coil shock - Sturdy FOX FLOAT 38 Factory fork with GRIP X2 damper - Performance-focused and durable Shimano SLX drivetrain - Powerful stopping power from TRP DH-R EVO 4-piston brakes - Adjustable travel PNW LOAM dropper post - Lifetime replacement of suspension pivot bearings for the original owner