Diamondback Bicycles Sync'r 24 Kid's Mountain Bike, 24" Wheels, Black Aluminum frame for lightweight durability designed to fit ages 8 to 12 or 53 to 62 inches tall SR Suntour XCR suspension fork with 80mm of travel enhances control over rough trails SRAM NX 1x11 speed drivetrain for smooth shifting and wide gear range Tektro Auriga hydraulic disc brakes have adjustable reach levers for growing hands Pedals included; limited lifetime warranty on the frame for as long as the original retail purchaser owns the bicycle