Trek Fuel EXe: The Evolution Of E-MTB The all-new Trek Fuel EXe marks the beginning of a new E-Bike era. Lightweight, nimble and playful, it’s one that’ll satisfy the purists and E-MTB enthusiasts alike – an out-and-out trail bike that just so happens to have a cutting-edge motor built right in. The EXe is the future of E-MTB. Having received our first Fuel EXe in-store, we took a closer look at it to find out…