SKU: AMP-ENG-200V2

Supercharger Pulley

$123.25 $145.00

IN-STOCK

Reduction:15%

Variant

ALTA Supercharger Pulleys increase boost and throttle response with a lightweight, precision balanced design. Available in 15% and 17% reductions for proven power gains.

PROPOSITION 65

WARNING: Handling passenger or off-highway motor vehicle parts can expose you to chemicals such as phthalates and lead, which can cause cancer and reproductive harm. To minimize exposure, service the vehicle in a well-ventilated area, wear gloves, and wash your hands.

For more information see: www.P65Warnings.ca.gov/motor-vehicle-parts

OFF ROAD USE ONLY

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.

ESTIMATED DIY INSTALL TIME:

180 MINUTES

EMAIL OUR TECH DEPARTMENT:

TECH@PERRIN.COM EMAIL US

Installation Instructions

Specifications

Version 2.0 Body Aluminum 6061T6
Body Finish Black anodized
Version 2.0 Hub 303 Stainless Steel
Bolts Grade 12.9 Socket Cap
Lock Washers Grade 10.9 HI-Collar
Stock Pulley Weight 11.5 Oz
15% Pulley Weight 8.3 Oz
17% Pulley Weight 8.0 Oz

In The Box

(1) ALTA Supercharger Pulley Hub
(1) ALTA Supercharger Pulley Body
Hardware for Installation
Warranty & Instructions

5 YEAR WARRANTY

* JCW and GP: SC Pulley fits, but ALTA pulley puller will not remove pulley as JCW and GP pulley is smaller than Cooper S.

* Find the correct belt required for your particular supercharger pulley setup, here.

Body Design

The pulley body is machined from lightweight 6061 T6 aluminum to reduce rotational inertia for quicker supercharger response. Cross drilled holes through each groove improve belt grip and help reduce slip as the belt stretches, while oversized belt retainers help keep the belt securely in place under load.

Clamp On Shaft Coupler

Unlike wedge style pulleys, the ALTA design uses a stainless steel clamp on coupler for a secure, reliable hold on the supercharger shaft. This proven system grips better than traditional designs and even works on shafts worn up to .020 inch. An open inspection aperture allows you to visually confirm proper installation.

Precision Balanced

The outer pulley is machined from solid billet aluminum for natural balance. The hub adapter is precision balanced during production to ensure smooth operation at high RPM, meeting or exceeding factory balance standards.

Available in Two Sizes

The ALTA Supercharger Pulley is available in 15% and 17% reductions. The 15% option delivers smooth, reliable gains of around 20 wheel horsepower, while the 17% builds boost sooner and adds approximately 1.5 psi at redline for stronger low and top end power.

Installation Tool Available

An optional ALTA Pulley Removal Tool is available to safely remove the factory pulley on MINI Cooper S models, making installation straightforward and repeatable.