Seller notes

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 ...

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