The Stumpjumper 15 Alloy Comp is here and ready to eliminate any compromises in your trail riding experience. Does it absorb bumps like a big bike? Check. Does it offer the control, playfulness, and efficiency of bikes with less suspension travel? Double check. What about various adjustment options to perfectly customize your bike to your preferences and riding style? Check, check, check. EVEN MORE CAPABLE: Our new GENIE shock technology combines a playful and responsive ride feel with the downhill capabilities of enduro bikes. EVEN MORE CONTROLLED: The Stumpjumper 15 Alloy Comp provides better traction than our "Bike of the Year," the Stumpjumper EVO. ENDLESSLY CUSTOMIZABLE: Six different geometry settings, mullet or full 29er, adjustable spring curve, and much more. GENIE DELIVERS: Our latest innovation is GENIE. This air shock technology fulfills the three main wishes of our riders: an almost “impervious” air shock with the smooth ride feel of a steel spring — plus ultra-fine adjustability. THE BEST OF BOTH WORLDS: GENIE combines the linear spring rate of a steel spring in the first 70% of travel with the progressive spring rate of an air shock in the last 30%. This maximizes control and prevents bottoming out. GENIE offers the best of both worlds — steel and air springs — along with tuning options. Say goodbye to compromises. The future of trail riding starts now. IMPROVED IMPACT FORCE MANAGEMENT: With 16.3% better impact force management compared to conventional air shocks, GENIE in the Stumpjumper 15 makes the bike feel like it has much more suspension travel. For example, the Stumpjumper 15 Alloy with 145 mm at the rear and our enduro bike with 170 mm both utilize 101 mm of travel to absorb an impact force of 1080 N. MORE TRACTION: Extensive testing in the lab and on the trails has also shown that the Stumpjumper 15 Alloy with GENIE has 57% better traction compared to a conventional air shock. Our new GENIE technology offers you the smooth performance of a steel spring, which generally provides better rear wheel contact than a standard air shock. Your power is transferred more effectively, giving you better control. LESS BOTTOMING OUT: The harder the hits, the more the "reserve" of GENIE comes into play: in the last 30% of travel, the damping resistance progressively increases, reducing the potential frequency and intensity of bottoming out.