Created using GT's Legal Fit System, the Grunge specifically caters for growing bodies. The Legal Fit system allows GT to build bikes that cater for proper gearing and body positioning without compromising on performance. Now there's no need to 'grow into a bike'.
GT Legit Fit System: Better Positioning, Faster Starting and Easier Pedaling
Lightweight Aluminum Frame
GT Designed Alloy Frame
Rear Coaster Brake