When retrofitting the 2012 Chevrolet® Camaro® ZL1 for racing with an automatic transmission, the TCI® GM® LSA Flexplate is a must. Engineered to prevent runout, ring gear bounce and other damaging problems, these flexplates offer unmatched strength and protection. Thicker than factory flexplates, the SFI 29.1 approved TCI® plates are precision ground from ultra-durable A36 steel. They are dynamically balanced for performance and electro-coated for protection against the elements. This is the perfect upgrade for any increased horsepower 2012 Camaro® ZL1 that has been converted to an automatic transmission. The flexplate is also a valuable tool for vehicles other than Camaros with LSA engine transplants and automatic transmissions. This machined Flexplate is for GM® LSA engines. SFI 29.1 approved and internally balanced. Features both 11.1" GM® LS and 10.75" Small GM® Bolt Patterns with a 168 Tooth Count.