C6 ZR1 LS9 2.35 11 Rib 10 Bolt Pulley to be used with ZR1 Supercharger snout or supercharger front cover.

Pulley diameters are measured with a 2.5 mm check ball. If measuring the pulley diameter directly with a caliper the diameters will be closer to 2.60” and 2.35”. The 2.38” pulley when combined with our 14% overdrive damper will result in a supercharger speed 23,000 RPM at 6,500 RPM engine speed. Based on LPE testing we do not recommend exceeding 23,000 RPM on the LS9 supercharger.