A larger 4% oversize speed increasing crank pulley will add just that little extra added supercharger boost and performance. This beautiful design is a result of advanced computer modeling and high precision CNC machining. Made in the USA from billet 6061-T6 aerospace grade aluminum alloy with a deep black anodize coating, the M7 Speed 4% oversize - speed increasing pulley will provide a lifetime of reliable use. Weighing in at just 13 ounces and supplied with a brand new high strength ARP bolt and precision ground flat washer, the M7 Speed 4% crank pulley is best in class. Each M7 Speed product is Engineered....Tested....and Proven to PERFORM! Retail- $154.00 SPECIAL PRICE & FREE Shipping - $127.00 M7 Speed | World Leader for Mini Cooper Performance Parts & Accessories | M7Speed.com [/URL][/URL]