16% smaller pulley designed for increasing the supercharger pressure up to 0.4 bar and power up to 20 hp with significant torque increase. When combined with ECU Remaping it is possible to achieve up to 40 horsepower increase when compared to stock. The boost pressure with the pulley is within 1 and 1.2 Bars. Unlike other pressure boosting methods, the RTMG Mini Cooper S pulley is designed not to exceed the limits of the supercharger with the result that there won't any problems in the future with further damage components like water pump-alternator-bearings etc.
It is made of Aluminium alloy in modern CNC machines and standardization in iso. Our design allows to install the pulley without damaging the shaft of the supercharger through the double clamping taper. No special skills for installation are required and it's possible to fit without having to remove the supercharger from the engine.
Fits all Mini Cooper S R53
To avoid belt slipping the use of a shorter belt is recommended.