The Stumpjumper 15 EVO is designed to eliminate trade-offs in trail riding. It delivers the bump-absorbing capability of a larger bike while maintaining short-travel control, playfulness, and climbing efficiency. The bike offers extensive personalization options to tailor the ride to individual preferences. The breakthrough innovation on this bike is GENIE Shock Technology, a patent-pending air spring system that combines the control-enhancing linear spring rate of a coil spring through the bump zone with the progressive spring rate of an air spring at the end of the stroke. This hybrid approach provides better bottom-out prevention than a standard air spring while maintaining tunability for a playful feel. GENIE technology delivers measurably superior performance compared to traditional air-sprung shocks. The Stumpjumper 15 manages bump forces 16.3% better than a traditional air spring, produces 57% better traction by keeping the wheel in contact with the ground longer, and experiences 39% fewer bottom-outs during big hits due to its two-stage rising rate in the final 30% of the stroke. The geometry is carefully honed to deliver big bike capability when needed, nimble handling in tight sections, and efficient climbing. The generous cockpit centers the rider for optimized traction and corner control, while the low bottom bracket, slack head tube angle, and optimized fork offset maintain stability on rough terrain. The Stumpjumper 15 features six distinct geometry settings for unmatched personalization. Head angle and bottom bracket height can be fine-tuned for stability or clearance. Wheel choice is flexible-you can run big wheels front and rear or mix a 27.5" rear for a more responsive and playful ride using aftermarket shock links, with geometry remaining unaffected. SWAT 4.0 downtube storage provides smooth operation and weather resistance with a flush-mounted design. The bike is built with a lightweight FACT 11m carbon chassis and rear-end, robust Specialized alloy wheels with sealed cartridge bearings, and a FOX FLOAT 36 Rhythm fork with GRIP damper. Shifting is handled by a SRAM Eagle T-Type AXS drivetrain, while braking power comes from SRAM Maven Bronze 4-piston brakes. An X-Fusion Manic dropper post provides reliable adjustability. Specialized backs this bike with a lifetime, no-questions-asked replacement of suspension pivot bearings to the original owner, reflecting confidence in its durability and design. All You Need To Know About Stumpjumper 15 EVO GENIE Grants Every Trail Rider's Wishes This game-changing, patent-pending air spring technology that we invented grants every trail rider three wishes: feel and control of a coil spring, better bottom-out prevention than a standard air spring, and a tunable "platform" for a playful feel. What's Inside GENIE? Check out how GENIE combines the control-enhancing linear spring rate of a coil spring through the "bump zone" with the progressive spring rate of an air spring at the end of the stroke to reduce bottom-outs. It's the best of both worlds - coil and air - with extra tuneability. Say goodbye to compromises and hello to the future of riding. Unlock Your Ride with Tunable Geo Stumpjumper 15 boasts the planet's most capable trail geometry. With six-way adjustability, tailor your ride to perfectly match your style and terrain. Explore our interactive Geo Finder to pinpoint your ideal setting. Eats Bumps Like an Enduro GENIE shock technology gives the Stumpy 15 16.3% better bump performance than 'Bike of the Year' Stumpjumper EVO. It literally uses more travel for the same size bump, thanks to its flatter spring curve in the first 70% of travel. 57% Better Traction GENIE delivers 57% less traction loss time than a standard air-sprung shock because GENIE technology gives you supple, coil-like performance, which keeps the wheel in contact with the ground a greater percent of the time than a typical air spring would. Bye, Bye, Bottom Outs Send it with confidence knowing that in field testing GENIE eliminated 39% of severe bottom out events compared to a standard FOX Float air spring.