The Stumpjumper 15 Expert is here and ready to eliminate any compromises in trail riding. Does it absorb bumps on the trail like a big bike? Check. Does it have the control, playfulness, and efficiency of bikes with less suspension travel? Double check. And what about various adjustment options to perfectly tailor the bike to your style of riding? Check, check, check. EVEN MORE CAPABLE: Our new GENIE shock technology combines a playful and dynamic riding feel with the downhill capabilities of enduro bikes. EVEN MORE CONTROLLED: The Stumpjumper 15 has better traction characteristics than our "Bike of the Year," the Stumpjumper EVO. ENDLESSLY CUSTOMIZABLE: Six different geometry settings, mullet or full 29er configurations, adjustable spring curves, and much more. GENIE LEAVES NO WISH UNFULFILLED: Our latest innovation, GENIE, features air shock technology that fulfills the three main wishes of our riders: a near "bottomless" air shock with the smooth feel of a steel spring—plus incredibly fine tuning capabilities. 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 spring in the last 30%. This maximizes control and prevents bottom-outs. GENIE offers the best of both worlds—steel and air spring—along with tuning options. Say goodbye to compromises. The future of trail riding starts now. BETTER IMPACT MANAGEMENT: With 16.3% better impact management than conventional air shocks, GENIE in the Stumpjumper 15 makes the bike feel as if it has much more travel. For example, the Stumpjumper 15 with 145 mm in the rear and our enduro bike with 170 mm both use 101 mm of travel to absorb an impact force of 1080 N. MORE TRACTION: Extensive testing in the lab and on trails has shown that the Stumpjumper 15 with GENIE has 57% better traction than a conventional air shock. Our new GENIE technology delivers the smooth performance of a steel spring, creating more rear wheel contact with the ground than a standard air shock. This allows for better power transmission and greater control. LESS BOTTOM-OUT: The harder the hits, the more the “silent reserve” of GENIE reveals its full potential: In the last 30% of travel, damping resistance progressively increases—reducing potential bottom-out frequency and intensity. PROGRESSIVE TRAIL GEOMETRY: The geometry of this bike provides big bike virtues on demand, a light and agile steering feel in tight sections, and extremely efficient climbing performance. The central, spacious cockpit centers the rider for optimal traction and cornering control. The low bottom bracket, slack head tube angle, and optimized fork offset provide easy balance even in challenging terrain due to high 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. Steering angles and bottom bracket heights can be altered for the ideal center of gravity or necessary ground clearance. MULLET OR FULL 29ER: Large wheels for better rollover behavior and more momentum or a smaller rear wheel for increased fun? You have a choice. If you want to change the combination, we offer the appropriate link in our shop. And don’t worry, geometry and riding characteristics remain the same. SWAT BOX: The ingenious SWAT™ Box 4.0 in the downtube offers a windproof, weatherproof, and crash-proof storage compartment, now even safer and better integrated in the Stumpjumper 15.