Trek Top Fuel is a quick and nimble full suspension carbon mountain bike that fuses the efficiency of a cross-country bike with the capability of a trail bike. It's built with a lightweight OCLV Mountain Carbon frame, a 120 mm RockShox Reba fork, 115 mm of rear travel and a dropper for serious fun on flowy trails and techy descents alike. It's the kind of unicorn bike that shreds singletrack, stands up to the rigours of endurance racing and even gives traditional XC bikes a run for their money.