When you're after that one holy grail mountain bike build that lets you power through flowy singletrack, hit gnarly descents and drops, and even compete in marathon races. You want the best all-around trail bike frame we offer because you know a high-quality frame is the ticket to faster, bigger rides. The Trek Fuel EX A full OCLV Mountain Carbon frame and FOX Factory shock give you a major head start on a build that will be the envy of all other trail bikes. Fuel EX C is a frame set that excels in all-mountain riding, and it's the best all-around option for riders who want a single versatile, high-performance ride that rips it up on every trail. You also get Massive tyre clearance means you can use tyres up to 45 c for extra traction and stability in any conditions. Trek Fuel EX Carbon Frame Highlights A full OCLV Mountain Carbon frame makes for a ride that's light on the climbs and trail-tough on rough descents RE:aktiv with Thru Shaft works faster than a normal shock, so it tracks the ground better and keeps you in control This bike is perfect for shredding singletrack, hitting drops and pushing your limits in multi-stage and marathon events A sleek internal storage compartment gives you a versatile spot to stow tools and gear