Trek took the excellent weight, efficiency and ride of the Fuel EX 5, hit overdrive, and bumped it up to 29-inch wheels. The Fuel EX 5 29 uses an Alpha aluminum frame and all the magic that puts Trek at the head of the pack. Things like the E2 head tube, and suspension technologies make for a ride that obliterates the line between a hard-charging trail bike and nimble XC bike. The front and rear RockShox suspension is responsive, plush, and handles bumps way above its 130mm. Color subject to change.