The Stumpjumper 15 Alloy has arrived, ready to eliminate any compromises in the trail game. Does it tackle obstacles on the trail like a big bike? Check. Does it possess the control, playfulness, and efficiency of bikes with minimal suspension travel? Double check. And what about various adjustment options to perfectly tailor the bike to you and your riding style? Check, check, check. REFINED KINEMATICS: As the epitome of a trail bike, the Stumpjumper 15 Alloy combines efficiency with optimal shock management. We’ve achieved a balance regarding the anti-squat between the previous model and the Stumpjumper EVO, both of which showcased excellent riding characteristics. PROGRESSIVE TRAIL GEOMETRY: The geometry of this bike delivers big bike virtues on demand, a light and agile steering feel in tight sections, and exceptional climbing efficiency. The central and spacious cockpit centers the rider for optimal traction and cornering control. The low bottom bracket, slack head tube angle, and optimized fork offset provide effortless balance in challenging terrain due to enhanced stability. A FRAME FULL OF POSSIBILITIES: Six individual settings allow riders to perfectly adjust the ergonomics and efficiency of their bike according to preferences and terrain. The steering angle and bottom bracket height can be altered for the ideal center of gravity or necessary ground clearance. FORM FOLLOWS FUN: While we can construct a frame to be extremely stiff, that's not always practical. To connect with the bike, the frame must exhibit a certain degree of compliance. We've designed the M5 aluminum chassis—front and rear sections, along with their connection—as a unit that offers just the right stiffness needed for trail riding. WHEEL SIZE: All models with steel coil shocks come equipped with wheels of varying sizes.