Supercharger Pulley



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What's included

  • Supercharger Pulley for MINI Cooper S R53 (2002-2006) 15% Reduction
  • Belt For MINI Supercharger Pulley
  • NGK Iridium Spark Plugs for MINI Cooper R53 (2002-2006)

More GO

Our S/C Pulley is 15% smaller than the stock R53 pulley, which allows it to spin faster, increasing the boost. This increased boost results in increased acceleration, and this increased acceleration results in increased awesomeness.

We’ve included a slightly smaller belt in this kit that accounts for the 15% reduction in pulley size for a perfect fit. We’ve also included spark plugs that are a range colder than the OEM plugs, reducing the chances of pre-ignition.

Safe for Extended Use

CravenSpeed's supercharger pulleys are machined to a specific reduction of the original equipment on your MINI's supercharger. It is widely accepted that these sizes are safe amount of reduction on this particular supercharger. Smooth, form fitting teeth on your pulley take longer to machine but are worth the extra time. Our pulleys will neither eat nor throw your belt. You can be confident your belt will last long, and run quietly.

15% or 17% ??

If both sizes are safe for the supercharger which one should you choose? The supercharger is only creating boost under acceleration, on a normal or even a spirited drive this is only occasional. However, at the track or an autocross event acceleration is sustained and frequent. If you use your MINI for these types of events it is better to use the 15% reduction. This is because the 17% pulley causes the supercharger to heat more rapidly and the warm air begins to negate the positive effects of the extra PSI earlier in the band.Click here for the 17% reduction kit.


This pulley will work on all supercharged MINI models except the JCW which already has a similarly reduced size pulley on the supercharger. Although this two part pulley is self-centering to help ease installation you may still want to check our dealer finder for a CravenSpeed Authorized Installer near you. If you plan do on wrenching on your own, make sure you have a puller designed to remove the MINI's press-fit OEM pulley. Our quick puller allows you to remove the OEM pulley without removing the tensioner.

Free Domestic Shipping

We ship orders every weekday. All orders placed by 2:00 pm PT will ship the same day. You will receive a shipping notification when we print the label for your order. The tracking will not indicate that the order has been shipped until it is picked up and scanned in by the carrier. Orders placed after 2:00 pm PT on Friday will ship on Monday.

Our Team is comprised of a small group of dedicated individuals who each pride themselves on providing their best work to our customers every day. We are all willing to go above and beyond for our customers to make sure they are happy with their entire shopping experience. If you need anything, please drop us a line at and we'd be happy to help you out. Our customer service team will usually get back to you within the hour during business hours.

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