The Trek XO 1 is the base model in Trek's XO Series of cyclocross racing bikes. The entire XO series features a lighter, more efficient Alpha Black Aluminum frame, an improved racing fit and massive mud clearance. The Trek XO 1 features 10-speed high performance Shimano 105 shifters with matching Shimano 105 front and rear derailleurs and Shimano 105 cassette. It features a Bontrager Satelite Plus Cyclecross fort with carbon legs for clearance, strength and lightweight. Other high performace parts from Bontrager are used such as the tires, saddle, seat post, handlebars and stem. The Trek XO 1 also features a 3rd Eye chain watcher and is available in sizes varying from 47 - 62 cm.
