Mongoose Stun Boy's Freestyle BMX Bike with Training Wheels Ride your own BMX for the first time, all by yourself, with the Mongoose Skid Boy's Freestyle BMX Bike with Training Wheels. A low, stand-over steel frame allows for easy access and control for young children. A foot brake allows for confidence when stopping. Styled like a pro rider's bike, this kid's bike features plastic mag wheels and matching grips. An alloy four-bolt stem and two-piece handlebars adds strength for the ride. The durable chain guard helps protect from scrapes and cuts, while the removable training wheels help first-time riders find their balance at their own pace. This bike ships ready to be assembled, is ideal for riders between the ages of six and nine, has a limited lifetime warranty, and the wheels measure 18 inches.