Add 20+ Wheel HP to your MINI Cooper S! Alta Performance 15% Supercharger Reduction Pulley. Gates Serpentine Belt sized to fit the 15% Reduction Pulley (K060535).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 over-sized belt retainers, which reduces belts from jumping off. The ALTA Performance Supercharger pulley features a stainless steel coupler which clamps onto the supercharger shaft rather than wedging in place like other aftermarket pulleys. ALTA was the first pulley to use this clamp-on method, and it has proven to grip the supercharger shaft better than other aftermarket pulleys and it will work for those who have had other pulleys slip and cause damage to the supercharger shaft. Our hub will attach to supercharger shafts that have been worn down as much as. 020 and still work perfect! Additionally, the ALTA coupler features an open installation site aperture in end of our shaft coupler which allows you to visibly verify that the shaft collar is fully seated to the supercharger shaft.
The black outer pulley is machined on a lathe from solid billet aluminum. Since this part is perfectly symmetrical it is naturally balanced in its self. The non-symmetrical hub adapter must be balanced to offset the weight of the clamping bolts and slit.
In the machine shop we balanced our prototype pulley to within. 1 grams at 16000RPM (even better than stock). Data from that balancing was added to the model and applied to all production parts ensuring the entire part is balanced. This reduction size is the market standard and produces smooth, safe power increases of around 20WHP. This cost-effective pulley puller will help you get your new MINI supercharger pulley on faster.
With this tool, you will be able to remove the stock press fit pulley safely, without removing the tensioner. For use in removing stock supercharger pulley. The puller body is made of heat treated carbon steel and has a tooth profile to match the OEM pulley exactly. The center screw is grade 8 quality.
This tool is for the removal of the stock R53 pulley only, not the JCW pulley. This puller will not bend during normal use, and will last for many pulls. A card is included in the box with a QR code that links to instructions for use.
Not sure which size you need? Stock pulleys are a little over 2.5 inches in diameter. JCW pulleys are closer to 2.3125 inches.Only need to use it once? The 15% Reduction Pulley needs a shorter (1379mm) belt. Change your belt when you change the pulley and then after every 25,000 miles or when it shows signs of excessive wear. Let us know if you're using a 2% OD crank pulley so we can send you the right length belt.
See our other listings for 17% Pulley kits. Note: This product is legal in California only for racing vehicles which may never be used upon a highway. Check your local and federal laws prior to installation! The item "Alta 15% SC Reduction Pulley Kit with Tool & Belt for 02-06 MINI Cooper S R53" is in sale since Wednesday, August 17, 2016.This item is in the category "eBay Motors\Parts & Accessories\Car & Truck Parts\Turbos, Nitrous, Superchargers\Superchargers & Parts". The seller is "georgeco_specr53" and is located in Mount Airy, Maryland. This item can be shipped to United States, Canada, United Kingdom, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Australia, Greece, Portugal, Cyprus, Slovenia, Japan, China, Sweden, South Korea, Indonesia, Taiwan, South africa, Thailand, Belgium, France, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Germany, Austria, Bahamas, Israel, Mexico, New Zealand, Philippines, Singapore, Switzerland, Norway, Saudi arabia, Ukraine, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Malaysia, Brazil, Chile, Colombia, Costa rica, Panama, Trinidad and tobago, Guatemala, Honduras, Jamaica, Viet nam.