WIL140-8652 Installation Instructions 11" Pinto and Mustang II Pro Series front kit. This kit will fit Magnumforce suspensions. 11" rotors with 4-piston calipers. Fits most any 15" wheel. Wilwood's high performance heavy duty front disc brake kit offers increased stopping power and cooling while drastically reducing unsprung and rotating weight. These kits are designed for vehicles over 2800 pounds that are currently equipped with either drum or disc rear brakes. The kit includes Wilwood's four piston Dynalite racing caliper with corrosion resistant stainless steel pistons. To ensure rapid heat dissipation during heavy braking applications, a ventilated .83" thick cast iron rotor is used. This kit can save up to 30-35 lbs. over the original cast iron components. Also included are aluminum hubs with bearings, seals and studs, high friction disc brake pads, billet mounting brackets and hardware with detailed installation instructions. Also available in our heavy duty kits are the high performance Polished Billet Styled Dynalite calipers as well as drilled and slotted rotors, each of which adds $110 to the kit. Blue, Yellow, and Silver powder coating may delay the order.