Upgrade your Z06 or Grand Sport C6 Corvette with the heavy-duty wheel bearing assembly factory installed on 2009 ZR1 Corvettes. Recommended for serious track or autocross use. SKF race engineered hubs eliminate hassle of replacing lesser assemblies 2-3 times a year - you may go a full season without replacing bearings! Superior stiffness, durability and preload capabilities are due to thicker flanges and the larger inner bearing. Can be used on both front or rear applications.