Wilwood Sprint Inboard Brake Kits feature a fully engineered bolt-on brake system for sprint car quick change rears with 3.00 x 46 splined axles. With titanium or super alloy vented and non vented discs and a newly designed dynamic mount rotor axle clamp, are the lowest rotating weights available for Sprint racing. Forged billet radial mount calipers with composition metallic pads, produce superior stopping power and consistent fade-free response. Kits includes axle clamp with dynamic mount rotor adapter assembly with T-nuts and radial mount bracket and mounting hardware.