Fuel EX C is the ideal start for a dream trail bike with a full OCLV Mountain Carbon frame that has 130 mm of rear travel with a Fox Performance RE:aktiv Thru Shaft shock. Build it up light and fast or make it a beefy bruiser that's ready for some extra chunk. It's up to you.

You're after your own version of a holy grail mountain bike build. You know how you want to ride, and you know which parts you need to do it. You want the best all-around trail bike frame we offer, because you know that a great build starts with a great frame.

A full OCLV Mountain carbon frame with internal storage, 130 mm of travel and Mino Link adjustable geometry, and a FOX Performance Float shock with Trek's efficient RE:aktiv with Thru Shaft damper. Built for a PF92 bottom bracket and a 140 mm fork.

A full OCLV Mountain Carbon frame and FOX Performance shock give you a major head start on a build that will be the envy of all other trail bikes. It's the best all-around option for riders who want a single versatile, high-performance ride that rips it up on every trail.
- 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
- We expanded our size range from XS through XL to ensure a better fit for all riders

Will my bike have a curved top tube?
Smaller frames (XS and S) have a top tube that dips down as it approaches the seat tube. This design makes for a lower standover height, which is good for shorter riders because it allows them to straddle their bike more easily. Larger frames (M and up) have a straight top tube because taller riders with longer legs typically don't have the same issues with standover height.

Internal Storage
Internal frame storage makes it easy to ditch the pack and still carry your ride essentials.

Active Braking Pivot
Active Braking Pivot allows our engineers to tune how the suspension reacts to acceleration and braking forces independently. That means you get more confident control when you need it most.

RE:aktiv with Thru Shaft
RE:aktiv with Thru Shaft gives you unmatched grip and control with a shock that reacts to the terrain faster than anything else out there.

Straight Shot w/Knock Block
Trek's Straight Shot frame design optimises the stiffness-to-weight ratio for a more responsive ride. You'll be able to push harder and stay more planted on your line when the going gets rough.