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