S550 Mustang Road Race Roll Cage. Constructed of strong .120-inch wall thickness, 1.75-inch diameter DOM tube, our cage kits are shipped with ALL tubes cut to exact length and pre-notched, ready for you to weld in. The door bars and main hoop are pre-assembled as well! No fabrication or HOURS of tube notching required! Kits are complete with all floor plates/boxes as well as brackets to mount the dashboard and hang the steering column. Competition ready and already race proven. Suitable for SCCA, NASA, and Trans Am classes, but please verify specific requirements with your sanctioning body. Designed for off-road race use only.