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.