The GT Stomper Prime 20 is the ultimate kids mountain bike for the active kid that isn’t quite ready for a full size adult mountain bike. GT made this bike to be durable, versatile and ready for the most active kids aged 6-9. It is built with a GT Legit Fit System alloy frame which is lightweight and tough, yet offers the perfect fit for smaller riders. It enables kids to ride in comfort and ride the bike as intended, even if they’re on the smaller side. While the GT Hi-Ten Steel offers reliable performance for a range of surfaces.