APR 3.0 TFSI Supercharger Drive and Crank Pulley with Belt (Press on) - MS100184 brake-kits 9/16 to 5/16 Female Spring

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APR 3.0 TFSI Supercharger Drive and Crank Pulley with Belt (Press on) - MS100184 brake-kits 9/16 to 5/16 Female SpringOverview: APR's Supercharger Drive Pulley Upgrade decreases the diameter of the factory pulley from ~63. 25mm to 57. 75mm, which in turn spins the supercharger ~9. 5% faster. This results in a healthy bump in horsepower and torque across the entire RPM range with the supercharger operating at a higher rate of speed. The pulley is CNC machined from billet stainless steel, e coated black for an OEM appearance and is press fitted to the factory