The EradiSpeed+ is a direct replacement 2pc rotor for the 1988-1996 GM Y-Body cars. This is designed to work with the stock brake system found on the Corvette. These 12 inch rotors feature directional vanes, which advances cooling efforts and are a 2pc design with an anodized black 6061-T6 aluminum center hat bolted to the rotor ring, greatly reducing weight.Rotor Diameter:12 inch 2-piecePiston Count:Uses your existing stock calipers.Pad Type:Uses stock pads.Includes:12 inch 2pc rotor assemblies for front rotors upgrade (sold in pairs)Notes:Designed to be used on 1988-1996 GM Y-Body vehicles with 12 inch rotors