Reduces drivetrain loss. Improves clutch engagement feedback. Significantly reduces failure issues caused by OEM rubber torque tube bushings. Fits 2009-2013 C6 Corvette ZR1. Fits 2014-2019 C7 Corvettes (Stingray, Grand Sport, Z06, and ZR1) with 12mm hardware. These polyurethane 12mm torque tube