Product details:

The GT Men's Aggressor Pro Mountain Bike is the answer for rocky terrain, winding singletracks, and anything else that comes your way on the dirt trails. Constructed with a 6061-T6 Aluminum Triple Triangle Frame and a SR Suntour XCT fork, the Aggressor Pro delivers optimal durability and handling. Easily transition through different elevations with the Shimano drivetrain and 8-speed shifter. We strongly recommend that a professional bicycle mechanic properly assembles, repairs, and maintains the bicycle. If you choose to assemble the bicycle yourself, DICK'S Sporting Goods is not responsible for injuries or damages resulting from improper assembly. Size: 17".