Diamondback Overdrive 27.5" Mountain Bike - 2016 Performance Exclusive An aluminum frame with 100mm of front suspension travel is perfect for the road or most light trail rides A Shimano 24-speed drivetrain with an Acera rear derailleur and triple cranks Doublewall alloy wheels and Hornet tires Tektro Aries mechanical disc brakes will slow you down, even in wet conditions