Kraus Rear Radial Caliper Mount Experience the benefits of advanced braking technology with the radial-mounted rear brake caliper. This mounting option also provides the flexibility to use larger 300mm brake rotors for enhanced braking performance. Features: Will allow fitment of commonly found 108mm style calipers Accommodates stock rotor size or oversize rotors as large as 300mm Made in the USA Kraus Motor Company's sleek, inventive custom bikes have always attracted attention. These designs are equally at home winning World Championship bike races or smashing land speed records. Kraus Motor Company has changed its concentration to the development and manufacture of cutting-edge performance suspension, braking, and ergonomic systems for Harley and Indian motorcycles. Every item they manufacture is clearly designed with utility and performance in mind.