| SKU:
AMP-ENG-200V2
Alta Performance Supercharger Pulley 15%
Mini Cooper R50/R52/R53 (Inc Cooper S/JCW)
Goes well with
![Alta Performance Supercharger Pulley Belt For 15% and 17% Pulley Mini Cooper R50/R32/R53 (Inc Cooper S/JCW) AMP-ENG-213]()
Gates Supercharger Pulley Belt For Alta Performance 15% and 17% Pulley
$40.00Unit price /Unavailable
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Description
Description
The quickest and easiest way to add 20+ Wheel HP to your MINI Cooper S!
Body Design
- Constructed of lightweight 6061T6 aluminum to reduce rotational inertia and improve engine response
- Cross-drilled holes increase belt grip and reduce slippage as the belt stretches
- Oversized belt retainers help prevent the belt from jumping off
Shaft Coupler Design
- Features a stainless steel clamp-on coupler for a secure grip on the supercharger shaft
- Proven to work even on worn shafts (up to .020" wear)
- Includes installation aperture to visibly verify proper collar seating
Balanced
- Outer pulley is machined from solid billet aluminum for natural balance
- Non-symmetrical hub adaptor is precision balanced to offset bolt and slit weight
- Prototype balanced to within 0.1 gram at 16,000 RPM, exceeding OEM standards
- Production models incorporate balancing data from prototype
Pulley Size
ALTA Supercharger Pulleys are offered in two sizes: 15% and 17% reductions.
15% Reduction
- Industry standard size
- Produces smooth and safe power gains
- Increases output by approximately 20 WHP
17% Reduction
- Ideal for drivers seeking additional power
- Builds boost earlier in the RPM range
- Adds approximately 1.5 psi of boost at redline
- Delivers more low-end torque and extra top-end horsepower
Belt Fitment
Here you'll find the correct belt required for your particular supercharger pulley setup.
| Supercharger Pulley Size | Stock Crank Pulley | 2% Oversized | 3% Oversized | 4% Oversized |
|---|---|---|---|---|
| Stock Supercharger Pulley | Stock belt | Stock belt | NAPA Belt #060547 | NAPA Belt #060547 |
| 15% Supercharger Pulley | NAPA Belt #060535 | NAPA Belt #060539 | Stock belt | Stock belt |
| 17% Supercharger Pulley | NAPA Belt #060535 | NAPA Belt #060539 | NAPA Belt #060539 | Stock belt |
* Note: +5% Supercharger Pulley for Turbo kit uses #060547
Installation Tools
The ALTA Pulley Removal Tool is the perfect tool to reliably remove the factory supercharger pulley from your MINI Cooper S (tool does not work on JCW or GP pulleys).
You can purchase your own tool — perfect for club events or group installations.