Product updated on 2020-08-26, RK Sport - RKS:52012010, 14-UP Chevy Corvette C7 Rear Diffuser – Carbon Fiber, Fits all 14 up Stingrays, RKSport was born and bred on the race track. It is the offspring of racer and race car builder RK Smith. His talent on the track combined with his skill as a designer/ builder produced a decade of awards, championships, and accolades. It also forged the philosophy and principles on which RKSport was built. ,