Kraftwerks Rotrex Supercharger Ribbed Pulley (R50-99-0110) _Cast_356-F_Aluminum Direct Fit With Factory or

Direct Fit With Factory or Aftermarket GrimmSpeed Header/J-Pipe

The EVO7100 comes with all necessary hardware to provide a simple and fast installation

Crafted for unmatched durability

4WD 1975 Chevrolet K20 Suburban 4WD

Kraftwerks Rotrex Supercharger Ribbed Pulley (R50-99-0110) _Cast_356-F_Aluminum Direct Fit With Factory orIf you want your ROTREX supercharger work more efficiently, then it is vital to provide it with ROTREX or KRAFTWERKS pulleys as they will improve your vehicle performance. The supercharger compresses the air into the combustor and the pulley enables its spinning, so the faster the supercharger spins the more air will be compressed. That's why having a proper pulley will provide a pressure boost and therefore will increase the supercharger efficiency.