Get the most out of your R's supercharger with this affordable lower supercharger pulley upgrade. This kit is designed to deliver an extra 10% (30+bhp) by getting your supercharger to produce additional boost.
Supercharger pulley upgrades are unlike other modifications because they provide HP gains throughout the RPM range. Intake and exhaust systems are good for low and top end performance, but only this upgrade can help improve your mid range performance. For that reason this pulley will deliver performance in a way you never felt before.
This new pulley is bolted onto a modified crankshaft damper unit and secured to the crank by a single central retaining bolt. No other modifications are necessary as the ECU automatically makes adjustments for the increased supercharger speed / pressure.
Installation is very straight forward and complete instructions are provided. A well equipped mechanic will be able to install this part without a problem. Supplied with a longer drive belt so that full adjustment is still available.
Price is for an exchange pulley assembly i.e your old pulley is required in exchange.
Fits all R models from 98-2005.
Upper pulley also available.
