The Track4 system features a robust 2-piece, 4-piston T4 caliper paired with a 13-inch, one-piece slotted and drilled zinc-plated rotor. Designed with D.O.T compliant dust and weather seals, the T4 caliper uses the widely popular D0749 pad type, ensuring you get reliable performance. Plus, all the necessary mounting brackets, stainless braided hoses, and hardware come included for a hassle-free installation. This impressive 13-inch Track4 setup is compatible with most wheels that are 17 inches or larger. Perfectly fits 1985-87 Chevy Corvette (C4).