Supercharger Pulley



Add to Cart

1, 2, 3, More GO

  1. Smaller pulleys spins supercharger faster
  2. More Spin = More Boost
  3. More Boost = Faster Acceleration

Original Design, still made in the USA

CravenSpeed designed and championed the 2 piece supercharger pulley in 2005. Our work has been copied hundreds of times, but never matched. The same expert machinists have been making our pulleys for years and ensuring that each one meets our high standards of quality. 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. We do recommend using a slightly smaller belt with these reduction pulleys, we offer the Gates FleetRunner belt. Refer to the guide if you aren't sure whether you need a belt or not.

Which Gates belt do I need? Stock Crank Pulley +2% Crank Pulley
Stock SC Pulley K060547 K060547
15% SC Pulley K060535 K060539
17% SC Pulley K060532 K060539
Included hardware with the CravenSpeed Supercharger Pulley

15% or 17% ??

If both sizes are safe for your supercharger, then 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.


This pulley will work on all supercharged MINI models. If you have a JCW, that model starts with a smaller pulley than the standard ‘S’ model but both of these options are still slightly smaller than that one. 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 on wrenching on your own, make sure you have a pulley 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 and is available for either the S or JCW sized pulleys.

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.

Click here to meet the team!