With Alta discontinuing their 17% pulley it opens the door for Cravenspeed to step in as they offer fantastic products, made in the USA. They have a solid reputation and this pulley is one of their best products. Available in 15% and 17% sizes.

It's widely accepted that a 15% pulley is a safe size reduction on this particular supercharger, and the 17% pulley is a great option for those that want a bit more boost and will require a larger belt which is part number 060535 and can be purchased on our site if you search for "belt" or navigate to it directly. Changing this pulley will still allow you to use the OEM belt (if you use the 15% pulley). The diameter of the pulley is still large enough to avoid slippage with the help of the Tru-form tooth profile. Smooth, form fitting teeth on your pulley take longer to machine but are worth the extra time. Cravenspeed pulleys will neither eat nor throw your belt. You can be confident your belt will last long, and run quietly.

Fits these MINI models:

R52: 2004-2008 Convertible: Cooper S
R53: 2002-2006 Hatchback: Cooper S Priced individually