Full Tilt XC. A mountain bike with more. More traction, more comfort, more capability to make every trail easier.No other hardtail descends as fast, climbs as nimbly, or kicks as hard. With the otherworldly performance of the Lefty Ocho, this is next-level cross-country performance, tailor-made to feed the needs of the XC obsessed.Our proprietary ballistec carbon lets us push boundaries and tune rigidity throughout the entire frame – for stiffness where you need it and compliance where you don’t. At just 900 grams (size m, with all paint and hardware) it’s one of the lightest hardtails in the worldKey Features:Designed For the Win: At just 900 grams, F-Si is the lightest mountain bike frame we’ve ever made. Better still, our engineers built in real compliance, real durability, and the handling and features that really win races.Next-Level Geometry: F-Si attacks the steepest climbs and nastiest descents of modern World Cup XC courses. Ai offset drivetrain and OutFront steering geometry deliver an uncanny mix of stability, agility and traction.The Best XC Fork…Period: Simply the most advanced, smoothest, most precise-handling ultralight XC fork ever made. Its one-of-a-kind design lets it float through the chop and steer through the choss like nothing else.