The Trek Fuel EX 9.9 Project One is a high-end trail bike built for riders who want a refined balance of climbing efficiency and descending capability. Its lightweight carbon frame and dialed suspension platform deliver a smooth, controlled ride over varied terrain, staying responsive on climbs while remaining composed through technical descents. The Project One customization adds a unique, personalized finish to a performance-focused platform. With modern trail geometry and a capable build, the Fuel EX 9.9 offers a confident, versatile ride suited for everything from long trail days to more aggressive singletrack.