Supercharger reduction pulley for the 1.6 Cooper S in the R52 or R53 cars. Made from billet stainless steel Take the standard pulley off the supercharger and fit this uprated one, it is 17% smaller than the OE pulley which increases the RPM of the supercharger. Gives more boost throughout the rev range. Being a 2 part design means you can easily remove it in the future if required, you can also change the size at a later date if required. A puller will be required when fitting. Shorter belt with part number 6PK1360 will be required.
