20" Boys Crossfire mountain bike with features found on big brother's bike as well as dad's. Tuned travel front shock absorbs the bumps and the sturdy steel frame keeps the bike tracking straight. Shifting is handled with a six-speed drivetrain featuring twist shifters, and lugged knobby tires get all that kid power to the ground and provide great traction. Front and rear linear pull brakes keep speed in check. Supple padded seat is easily adjusted with no tools thanks to a quick release lever clamp. With the MT20, the fun doesn't stop when the street end