This 16% smaller pulley is engineered to enhance the supercharger pressure up to 0.4 bar, delivering an increase of up to 20 horsepower with a notable boost in torque. When paired with ECU Remapping, it can achieve up to a 40 horsepower increase over stock configurations. The boost pressure with this pulley ranges from approximately 1 to 1.2 Bars. Unlike other methods, this pulley is designed to stay within the stock supercharger's limits, ensuring maximum reliability without causing damage or additional wear to components such as the water pump, alternator, or bearings.

Constructed entirely from aluminum alloy using modern CNC machines and adhering to ISO standards, this pulley can be installed without damaging the supercharger shaft, thanks to its double clamping taper design. Installation is straightforward, requiring no special skills, and can be completed without removing the supercharger from the engine.

Fits all Mini Cooper S R53 models.

* A shorter belt is necessary to prevent belt slipping.