Vortech 3.33" 6-Rib Supercharger Pulley.Vortech 6-Rib Supercharger Pulleys are machined from 6061 T-6, hard anodized aluminum with the proper profile to maximize surface contact area for precise fit. Each pulley is built to SAE standards. This pulley measures 3.33" in diameter.
Please Note: A change in one pulley size will usually effect boost 1-2 PSIG. A general understanding is down in diameter, up in boost and vice versa.
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