Shelby Killer Performance was started in 2015 by David an avid performance car enthusiast. Shelby Killer Performance specializes in LSX and 5th gen LT performance parts and accessories. With a five star rating our ultimate passion is making the customer happy.

2016 Shelby KillerPerformance LLC

Looking to spin that supercharger harder and help that monstrous LT4 blower breath a little more fire?!!  Add this smaller upper pulley to the supercharger snout replacing the OEM 2.5 pulley and you will increase the supercharger speed by approximately 5%!

Requires snout modification

2.3 Upper Pulley for 2015+ C7 Corvette Z06