Front 6 Piston and Rear 4 Piston Brembo ZR1 Calipers
2009 to 2013 GM OEM Brembo front & rear gunmetal gray Corvette ZR1 Brake Calipers. Great upgrade for the base model Corvette's and other vehicles.
GM part # 20999159, 20999158, 20999156, & 20999157.
Buy from a local GM dealer and you would be dropping around $600 to $700 each.