ALTA Supercharger Pulley 15% - R52/R53 MINI (S & JCW)Constructed of light weight 6061T6 aluminum, the ALTA SC pulley body decreases rotational inertia of the supercharger adding response to your engine. Holes are cross drilled through the pulley and over each groove, to increase belt grip and reduce belt slippage as your belt stretches. Also incorporated into the design are oversized belt retainers, which reduces belts from jumping off. 15% Reduction This reduction size is the market standard and

Increases horsepower and torque by reducing intake air temp

For best performance

Performance Upgraded Valve Guides

The additional contact surface area provided by the two cerametallic disc setup and smaller diameter result in reducing the moment of inertia (MoI)

Perfect Fitment Guarantee

7 HP @ 5900 RPM

Sound engineered specifically for the the seven-speed Porsche PDK transmission

UPGRADING TUNES

Genuine IS38 Turbocharger

-sourced CNC mandrel-bent 0

Boxster/Cayman (986 & 987) 97-08 all models

Dinan's Performance Spring set for the F30 340i (non xDrive) provides greater control over body roll by virtue of carefully calibrated spring rates