2.7"" 8-rib pulley ring for 05-10 Mustang GT 4.6L 3V with Roush R2300 / P51 TVS Supercharger kit.

This pulley is specifically designed for P51A single belt kits that have been converted to 8-rib with aftermarket parts.

This pulley bolts on to the Roush 6-bolt hub.

Black annodized aluminum.