The Trek Fuel EX Project One Gen 6 frameset is a lightweight, modern trail platform built for riders who want to create a fully custom bike around Trek’s versatile Fuel EX chassis. Constructed from Trek’s premium OCLV Mountain Carbon, this frame is engineered to balance stiffness, compliance, and trail capability, with progressive geometry that adds confidence on descents while maintaining strong pedaling efficiency on climbs. Designed around 140mm of rear travel, the Fuel EX Gen 6 features Trek’s proven ABP suspension design, adjustable geometry, adjustable leverage rate, and internal downtube storage for a clean and capable trail build. Guided internal routing, a magnesium rocker link, and integrated frame protection round out a frameset made for aggressive everyday trail riding. This Project One version is offered as a bare frameset only and is ideal for riders planning a fully custom build. No rear shock, headset, axle, hardware kits, or other small parts are included. Only the items shown in the photos are included. When assembled by an authorized Trek dealer, this frameset is eligible for Trek’s full manufacturer warranty. Because compatibility can vary depending on your intended build, Trek recommends working with a local Trek dealer to select the proper components. Product Specifications Frameset Frame: Trek Fuel EX Project One Gen 6, OCLV Mountain Carbon Rear Travel: 140mm Rear Shock Size: 185 x 55mm not included Suspension Design: ABP suspension platform Geometry Features: Angle-adjust headset, Mino Link adjustable geometry, adjustable leverage rate Storage: Internal downtube storage Routing: Guided internal cable routing Rocker Link: Magnesium Frame Protection: Downtube guard, shuttle guard Seat Tube Diameter: 34.9mm Bottom Bracket: BSA 73 threaded Chainline: 55mm ISCG: ISCG 05 Rear Axle Standard: Boost 148 UDH Compatible: Yes Compatibility Max Tire Size Frame: 29 x 2.50" XS and S: 27.5 x 2.50" Fork: Refer to fork manufacturer Max Chainring Size 1x: 34T round, 32T oval Minimum: 28T Max Brake Rotor Size Frame: 203mm Fork: Refer to fork manufacturer Sizing Chart XS Rider Height: 145 - 155 cm / 4'9" - 5'1" Inseam: 69 - 73 cm / 27" - 29" S Rider Height: 155 - 165 cm / 5'1" - 5'5" Inseam: 74 - 78 cm / 29" - 31" M Rider Height: 165 - 177 cm / 5'5" - 5'10" Inseam: 79 - 83 cm / 31" - 33" ML Rider Height: 173 - 180 cm / 5'8" - 5'11" Inseam: 81 - 86 cm / 32" - 34" L Rider Height: 177 - 188 cm / 5'10" - 6'2" Inseam: 84 - 89 cm / 33" - 35" XL Rider Height: 188 - 195 cm / 6'2" - 6'5" Inseam: 89 - 91 cm / 35" - 36" Included Trek Fuel EX Project One Gen 6 carbon frame only Includes only what is shown in the photos Not Included Rear shock Headset Axles Seatpost clamp Grommets Hardware kits Any additional small parts or accessories Warranty and Notes Eligible for Trek’s full manufacturer warranty when assembled by an authorized Trek dealer Component compatibility varies by build configuration Trek strongly recommends consulting a local Trek dealer for proper part selection and setup
