Quantity 2 replacement SKF Precision matched input shaft bearings for Vortech V1, V2, V3, V3R, V4, V7, Paxton Novi 1200, 1220, 1500, 2200, 2200HD RACE or MARINE version Superchargers. Race versions require a different bearing. Race or marine versions will have R, RACE, M, HD or MARINE stamped into the serial plate.
Race bearings are not recommended in a SL (Self contained) Supercharger. These superchargers have maximum rpm limitations.