Diamondback 2012 Response Comp Mountain Bike (Black) Butted 6061-T6 Aluminum Response Trail Frame SR Suntour XCR-RL, oil damped w/remote speed lock, 100mm Fork Shimano NEW Alivio rear derailleur w/ Alivio 9spd rapidfire shifters MX260 D Double Wall Rims Shimano M445 Hydraulic Disc Brakes