Provides up to 30% more stopping power than factory or factory-sized brake rotors. Upgrades not only performance, but improves the style of your factory wheel. Each floating rotor is constructed from 420 stainless steel, and is drilled for optimum performance and heat dispersion. Billet brake caliper adapters are included in each kit to properly relocate factory caliper to the proper position. Utilizes factory brake caliper, rotor hardware and brake hose. Easy bolt-on installation; no need to re-bleed the brake system. Easy kit includes a floating rotor, brake caliper adapter bracket and necessary chrome hardware. Designed to work with factory fork legs. 15" kits will not work with Arlen Ness "Hot Legs" fork legs..