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ALTA supercharger pulley providing a 17% overdrive for Mini Cooper S/JCW R53 models (2002–2006) and Cooper S/JCW Convertible R53 (2002–2008). The pulley reduces supercharger speed to alter boost characteristics, intended as a straightforward upgrade for R53 supercharger systems where a precise pulley percentage is required for calibration and tuning compatibility.
ALTA 02-06 Mini Cooper S/JCW & 02-08 S/JCW Convertible R53 17% SuperCharger Pulley
