CNC-machined, one-piece 6061-T6 aluminium crank pulley that replaces the factory two-piece pulley, which is prone to separating under load. The +2% overdrive diameter spins the supercharger faster for a boost increase on tuned cars, while the reduced rotational mass sharpens throttle response with no added vibration, bearing load or charging-system issues. Black anodized finish; roughly 120 minutes for a DIY install.

Fitment: MINI Cooper S and JCW, R53/R52 chassis, W11 1.6L supercharged engine.