Brake pad anti-rattle springs are often lost or damaged, especially when replacing brake pads on your C6 Corvette. New aftermarket pads do not include factory anti-rattle spring and therefore original spring must be reused. Count on Zip Corvette for the right parts to complete your brake system upgrade including new OEM brake pad springs. 4 per Corvette. Fits rear caliper on all 2006-2013 Z06 and GrandSport Corvettes.