The Pro+ system features a robust 2-piece, 6-piston caliper that’s expertly mounted to a 13" two-piece slot, drill, zinc plated rotor. With D.O.T compliant dust and weather seals, the 6P caliper is designed for durability and reliability, using the widely trusted D0731 pad type. You’ll find that the rotors come pre-assembled with high-grade NAS stainless hardware, and we’ve included all the necessary mounting brackets, stainless braided hoses, and additional hardware for your convenience. The 13" Pro+ is crafted to fit most 17" or larger wheels, making it a fantastic choice for your ride. This system is compatible with 1985-87 Chevy Corvette (C4).