Material: Light Weight 6061 Billet Aluminium. Replaces the Heavy Steel OEM Pulleys to Reduce Rotating Mass, Resulting in Extra Horsepower and Better Response. CNC Balanced to Negate Need for Damper. Kit includes: 1 x Pulley Kit (3 pieces: Crank Pulley, Water Pump Pulley, and Alternator Pulley) as seen in the picture. Professional Installation is Highly Recommended. (No Instruction Included).
