Mongoose 29″ Durham Mountain Bike, 21 Speeds, GrayThe Durham mountain bike by Mongoose was built for rad off-road excursions. The Durham features a lightweight aluminum frame and Element suspension fork for a ride that’s ready to tear down the trails. The 21-speed trigger shifters provide effortless gear changes, while front and rear mechanical disc brakes deliver superior stopping power in all conditions. Alloy double wall rims add lightweight strength and 2.3-inch wide mountain tires provide stability and grip. Plus, the tool-free adjustable seat post makes it easy to fine-tune the fit. Get out there and explore with the Mongoose Durham mountain bike.