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The Alta 15% supercharger pulley is a direct-fit R53 pulley for 2002–2006 Mini Cooper S and JCW models and 2002–2008 S/JCW convertibles. Sold as a 15% pulley, it changes the supercharger drive ratio for the R53 Eaton system and is intended for owners seeking an alteration to how the factorycharger operates. Fitment is specific to R53 supercharged Mini Cooper S and JCW applications.
ALTA 02-06 Mini Cooper S/JCW & 02-08 S/JCW Convertible R53 15% SuperCharger Pulley
