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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!
