The SSBC-USA Competition Series calipers are the new standard in braking performance. Advanced engineering and billet 6061-T6 aluminum construction create a caliper that is both exceptionally strong and lightweight. Competition Series calipers are available in both a Race version for the ultimate in compact design and lightweight Street version which includes internal dust seals in addition to the high-temperature square cut fluid seals. The use of stainless steel pistons, stainless steel retainer plates, and nickel-plated bolts create a caliper that offers the ultimate in braking performance and durability. Competition Series calipers are available for a variety of rotor thicknesses and fit standard 5.25" mounting brackets. Sold each.