Power is nothing without control, Big Brake floating rotor kits dramatically improve braking performance while adding performance styling to your factory wheel. Each kit provides about 30% more stopping power than smaller factory rotors. Each kit includes oversized rotor cut from 420 stainless steel, billet aluminum caliper adapter bracket, and necessary hardware. Utilizes factory brake caliper, brake line and wheel. Easy installation with no need to re-bleed the brake system. 15in. kits are designed for Dyna, Softail and Sportster models with 19 or larger front wheels in spoke or hub mounted applications. NOTE: Designed to work with factory fork legs, will not work with Ness Hot Leg fork legs.