Valve train timing plays an important role in determining an engines power band. CNC machined and laser indexed GReddy adjustable Camshaft Sprockets allow for precise tuning of valve timing. Clearly marked with 20 degrees of advance and retard, the slotted type allows for easy adjustment. The lightweight construction and hard-anodized outer ring reduce wear. BOTH INTAKE CAM PULLEY AND EXHAUST CAM PULLEY ARE THE SAME. THIS SALE IS FOR 1 CAM PULLEY, SO IF YOU WANT BOTH INTAKE AND EXHAUST PLEASE PURCHASE 2 ITEM QTY. DISCONTINUED-Please do not order!