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ALTA Performance Supercharger Pulley - 17% Reduction
Part #: AMP-ENG-205V2
$130.00 For each
Fits On:
2002-2006 Cooper S Hardtop, 2004-2008 Cooper S Cabrio
Description:
The quickest and easiest way to add 20+ Wheel HP to your MINI Cooper S!
Body Design
Constructed of lightweight 6061T6 aluminum, the ALTA supercharger 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 oversized belt retainers, which reduces belts from jumping off.
Shaft Coupler Design
The ALTA Supercharger Pulley features a stainless steel coupler which clamps onto the supercharger shaft rather then 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. The hub will attach to supercharger shafts that have been worn down by as much as .020" and still work perfectly!
Additionally the ALTA pulley coupler features an open installation site aperture in end of the shaft coupler which allows you to visibly verify that the shaft collar is fully seated to the supercharger shaft.
Balanced
The black outer pulley is machined on a lathe from solid billet aluminum. Since this part is perfectly symmetrical it is naturally balanced in itself.
The non-symmetrical hub adaptor must be balanced to offset the weight of the clamping bolts and slit. In the machine shop ALTA balanced their prototype pulley to within 0.1 gram 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.
17% Reduction
For those seeking a bit more power, the 17% is the ideal choice! Builds boost at a lower RPM giving you even more power down low where you need it, combined with another 1.5psi of boost at redline, it gives you the extra HP to conquer even the toughest challenge!
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.
History
In 2003 ALTA was the first manufacturer to design a two piece, taper fit Mini Cooper Supercharger Pulley (V1). Today, this is the most imitated design on the market. The current version of the ALTA pulley (V2) has taken pulley design to the next level. Installation is easier than ever, and the results are even more fantastic.
5 Year Warranty
ALTA Performance warrants to the original purchaser, all ALTA products to be free from defects in material and workmanship within a sixty (60) months period from the date of purchase. *Some exclusions apply.
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!
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
17% Pulley Weight: 8.0 Oz
In The Box
(1) ALTA Supercharger Pulley Hub
(1) ALTA Supercharger Pulley Body
(1) Allen Wrench
(5) Bolts & (5) Split Washers
Instructions
Warranty
Stickers
Compatibility
2002-2006 Cooper S Hardtop: Yes
2004-2008 Cooper S Cabrio: Yes
JCW and GP: Yes
**SC Pulley fits, but ALTA pulley puller will not remove pulley as JCW and GP pulley is smaller than Cooper S.
The quickest and easiest way to add 20+ Wheel HP to your MINI Cooper S!
Body Design
Constructed of lightweight 6061T6 aluminum, the ALTA supercharger 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 oversized belt retainers, which reduces belts from jumping off.
Shaft Coupler Design
The ALTA Supercharger Pulley features a stainless steel coupler which clamps onto the supercharger shaft rather then 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. The hub will attach to supercharger shafts that have been worn down by as much as .020" and still work perfectly!
Additionally the ALTA pulley coupler features an open installation site aperture in end of the shaft coupler which allows you to visibly verify that the shaft collar is fully seated to the supercharger shaft.
Balanced
The black outer pulley is machined on a lathe from solid billet aluminum. Since this part is perfectly symmetrical it is naturally balanced in itself.
The non-symmetrical hub adaptor must be balanced to offset the weight of the clamping bolts and slit. In the machine shop ALTA balanced their prototype pulley to within 0.1 gram 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.
17% Reduction
For those seeking a bit more power, the 17% is the ideal choice! Builds boost at a lower RPM giving you even more power down low where you need it, combined with another 1.5psi of boost at redline, it gives you the extra HP to conquer even the toughest challenge!
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.
History
In 2003 ALTA was the first manufacturer to design a two piece, taper fit Mini Cooper Supercharger Pulley (V1). Today, this is the most imitated design on the market. The current version of the ALTA pulley (V2) has taken pulley design to the next level. Installation is easier than ever, and the results are even more fantastic.
5 Year Warranty
ALTA Performance warrants to the original purchaser, all ALTA products to be free from defects in material and workmanship within a sixty (60) months period from the date of purchase. *Some exclusions apply.
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!
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
17% Pulley Weight: 8.0 Oz
In The Box
(1) ALTA Supercharger Pulley Hub
(1) ALTA Supercharger Pulley Body
(1) Allen Wrench
(5) Bolts & (5) Split Washers
Instructions
Warranty
Stickers
Compatibility
2002-2006 Cooper S Hardtop: Yes
2004-2008 Cooper S Cabrio: Yes
JCW and GP: Yes
**SC Pulley fits, but ALTA pulley puller will not remove pulley as JCW and GP pulley is smaller than Cooper S.
Q: What are pulley kits? Why buy a pulley kit?
A: Pulleys are what drive your vehicles power steering, alternator and air conditioning unit. Belts attach to these pulleys and keep all the units running smoothly. By increasing the diameter of these pulleys, you slow down the power steering, alternator and air conditioning unit, reducing the amount of energy needed to drive them. Horsepower gains can be realized with a simple install package that has no recorded effect on emission levels. Beyond that, pulley kits often come in custom finishes, such as polished or anodized, and give your engine bay a clean custom look.
Q: How do you install a pulley kit?
A: Pulley kits are installed using hand tools. First remove your factory belts (this is a good time to buy replacements), and then remove the bolts to take your factory pulleys off. Replace them with the lightweight, larger diameter pulleys.
Q: What exactly is included in a pulley kit?
A: Pulley kits are car specific, and depend of whether you have power steering and/or air conditioning. The basic pulley set includes pulleys for power steering, alternator and air conditioning as needed, as sometimes come pulley belts (see the product description on our website to be sure).
A: Pulleys are what drive your vehicles power steering, alternator and air conditioning unit. Belts attach to these pulleys and keep all the units running smoothly. By increasing the diameter of these pulleys, you slow down the power steering, alternator and air conditioning unit, reducing the amount of energy needed to drive them. Horsepower gains can be realized with a simple install package that has no recorded effect on emission levels. Beyond that, pulley kits often come in custom finishes, such as polished or anodized, and give your engine bay a clean custom look.
Q: How do you install a pulley kit?
A: Pulley kits are installed using hand tools. First remove your factory belts (this is a good time to buy replacements), and then remove the bolts to take your factory pulleys off. Replace them with the lightweight, larger diameter pulleys.
Q: What exactly is included in a pulley kit?
A: Pulley kits are car specific, and depend of whether you have power steering and/or air conditioning. The basic pulley set includes pulleys for power steering, alternator and air conditioning as needed, as sometimes come pulley belts (see the product description on our website to be sure).
If you live in California, please note this item may be subject to a Proposition 65 warning. Click here to learn more.
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