Available in a stock sized or 2% oversized for supercharged applications, this lightweight crank pulley for the Cooper S increases your horsepower, torque, and throttle response.
Keeping the pulley at the stock size, the ALTA product reduces the overall weight without wearing out engine bearings or the oil pump and doesn't add any unneccesary vibration or noise. The 2% larger model adds more boost to SuperCharged Cooper S models, unlike some pulleys which are underdriven and prone to drivability problems.
This crank pulley has no effect on the car's charging system - it only is good for increasing horsepower and torque!
Weight: .65 pounds (2.3 pounds lighter than stock!)
Material | 6061t6 Billet Aluminum |
Finish | Black Anodizing |
0% Weight | .90 lbs. |
2% Weight | 1.0 lbs. |