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ALTA 02-06 Mini Cooper S/JCW & 02-08 S/JCW Convertible R53 17% SuperCharger Pulley
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The more aggressive of ALTA's two reduction pulleys, this 17 percent unit drives the R53 supercharger harder again than the 15 percent version.
Verified fitment: 2002-2008 Mini Cooper S.
Stepping up to the larger reduction is really a decision about how far the rest of the car has been taken. Intercooling, fuelling and tune all have to keep up, and a bigger step at the pulley makes those supporting parts matter more, not less - owners with a built supporting package usually end up here, while a stock car often does not.
Rev Auto Club can talk through whether the 15 or 17 percent pulley makes more sense for your build - get in touch before ordering.
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Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.
This website is encrypted. We take your security very seriously. All transactions powered by Shopify.
Rates are approximations. Exact rates will be provided at checkout.
Shipping estimator









Why buy from Rev Auto Club
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Fitment verifiedEvery part checked against your exact year, make & model before you buy.
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Sourced by specialistsOEM & performance parts chosen by techs who work on Porsche, Ferrari, BMW & Mercedes every day.
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Fast, free US shippingFree ground shipping on US orders — placed before 4PM EST, ships same day.
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Local pickup & installMiami customers can pick up or have it professionally installed at our shop.
Miami's European & exotic vehicle specialists · 1141 NW 36 St, Miami FL 33127 · (305) 847-9935
