-15%
ALTA 02-06 Mini Cooper S/JCW & 02-08 S/JCW Convertible R53 17% SuperCharger Pulley Alta ALTAMP-ENG-205V2
ALTA 02-06 Mini Cooper S/JCW & 02-08 S/JCW Convertible R53 17% SuperCharger Pulley Alta ALTAMP-ENG-205V2
ALTA 02-06 Mini Cooper S/JCW & 02-08 S/JCW Convertible R53 17% SuperCharger Pulley Alta ALTAMP-ENG-205V2
ALTA 02-06 Mini Cooper S/JCW & 02-08 S/JCW Convertible R53 17% SuperCharger Pulley Alta ALTAMP-ENG-205V2
ALTA 02-06 Mini Cooper S/JCW & 02-08 S/JCW Convertible R53 17% SuperCharger Pulley Alta ALTAMP-ENG-205V2
ALTA 02-06 Mini Cooper S/JCW & 02-08 S/JCW Convertible R53 17% SuperCharger Pulley Alta ALTAMP-ENG-205V2
ALTA 02-06 Mini Cooper S/JCW & 02-08 S/JCW Convertible R53 17% SuperCharger Pulley Alta ALTAMP-ENG-205V2
ALTA 02-06 Mini Cooper S/JCW & 02-08 S/JCW Convertible R53 17% SuperCharger Pulley Alta ALTAMP-ENG-205V2
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ALTA 02-06 Mini Cooper S/JCW & 02-08 S/JCW Convertible R53 17% SuperCharger Pulley

Alta
ALTAMP-ENG-205V2
AMP-ENG-205V2
Pulleys - Crank, Underdrive
20 Units In Stock - Ships Next Business Day
$ 145.00 $ 123.25
$ 123.25

SKU: AMP-ENG-205V2

ALTA 02-06 Mini Cooper S/JCW & 02-08 S/JCW Convertible R53 17% SuperCharger Pulley

This ALTA supercharger pulley has a 17% smaller diameter for 2002-2006 Mini Cooper S and JCW hatchbacks plus 2005-2008 S and JCW convertibles. It spins the supercharger 17% faster to deliver around 2 PSI more boost and noticeable power gains. Direct replacement design installs quickly without modifications.

Key Features

  • 17% Smaller Diameter: Increases supercharger RPM by 17% over stock for higher boost pressure and improved throttle response across the RPM range.
  • 6061-T6 Billet Aluminum: CNC machined from high-strength aircraft-grade aluminum for durability and resistance to heat and wear.
  • Hard Anodized Black Finish: Provides corrosion protection and a sleek look that matches engine bay components.
  • Direct Bolt-On Fit: Replaces OEM pulley precisely with no clearance issues or additional hardware needed.
  • Power Gains: Adds 15-25 wheel horsepower depending on tune fueling and supporting mods.

Product Notes

  • Pair with ECU tune for safe operation and full power potential.
  • Inspect belt tensioner during install for optimal performance.
  • Packages securely to prevent damage during transit.

Installation Notes

  • Professional installation recommended.
  • Remove stock pulley with 17mm socket and supercharger holding tool in 20-30 minutes.
  • Compatible with stock belt and tensioner no other parts required.

This Part Fits

Year Make Model Submodel
2002-2006 MINI Cooper S R53 Hatchback
2002-2006 MINI Cooper S JCW R53 Hatchback
2005-2008 MINI Cooper S Convertible R52
2005-2008 MINI Cooper S JCW Convertible R52

Why Choose ALTA?

  • Leaders in MINI Cooper performance parts since 2002 with proven track record.
  • All products made in USA with tight tolerances for reliability.
  • Engineered specifically for R53 supercharged engines based on real-world testing.

Frequently Asked Questions

  • Q: Will this fit my 2004 Mini Cooper S R53 with JCW kit?
    A: Yes it bolts directly onto all supercharged R53 Cooper S and JCW models from 2002-2006 plus R52 convertibles through 2008.
  • Q: What material is the pulley made from?
    A: Precision CNC machined from 6061-T6 billet aluminum with black hard anodized coating for strength and longevity.
  • Q: Does installation require special tools or tuning?
    A: Basic tools suffice for DIY in under 30 minutes tuning recommended to adjust for increased boost and prevent lean conditions.

Shipping & Handling

  • Method: UPS Ground or USPS Priority
  • Availability: In stock - ships same or next business day
  • Packaging: Compact box 4 x 4 x 2 inches
  • Weight: 0.25 lbs
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