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

Fasterproms 2.31 Pulley is an overdrive pulley that increases boost by 2 PSI over the C7 Z06.

Smallest available pulley for the LT4.

Can also be used for upper pulley only for LSA application.

Requires professional installation.

Made in America

Fasterproms - 2.31" Upper Pulley - C7 Z06 LT4 / CTS-V LT4