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The supercharger pulley upgrade uses a 15% smaller diameter supercharger pulley to increase the boost up to about 15 psi from a stock 10.5 psi for MINI. This results in about a 20 hp increase.

Professional installation is strongly recommended.

Pulley Upgrade Supercharger & Crank Kit - R52/53 Cooper S

Pulley Upgrade Supercharger & Crank Kit - R52/53 Cooper S

Pulley Upgrade Supercharger & Crank Kit - R52/53 Cooper S
The supercharger pulley upgrade uses a 15% smaller diameter supercharger pulley to increase the boost up to about 15 psi from a stock 10.5 psi for MINI. This results in about a 20 hp increase.

Professional installation is strongly recommended.

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