Metco 10.0" 5.5lb Interchangeable Crank Pulley Ring Camaro ZL1/CTS-V MCR0010V

These are the individual crank pulley rings used with our Interchangeable Crank Pulley Kit for the GM LSA and LT4 engine. If you have our kit installed on your car, you can buy the rings separately for a quick and easy change to the boost level. These crank pulley rings are precision-machined from billet aluminum on a CNC lathe to ensure exacting dimensions, no runout, and the proper groove shape for maximum belt engagement. Each ring is black-anodized for long-lasting good looks and to provide the optimum surface for the ribbed side of the belt. Each ring size will require the appropriate supercharger belt.ailable sizes below.

Notes:

• In LT4 (CTS-V and ZL1) applications, pulley rings as large as 10.0" can be used without changing or relocating idler pulleys on the blower drive.
• For LSA applications, no idler pulley changes are necessary when using the 8.60" & 9.10" pulley rings.
• When using a 9.55” or larger ring in an LSA application, the crank idler pulley must be re-positioned for clearance.