Torque Solution has designed these pulleys not only to improve performance but to surpass the quality of the original pulleys. A critical feature of Torque Solution's lightweight pulleys are their increased mounting surface area which distributes the contact load over a larger area, eliminating the chances of the pulley spinning loose. Torque Solution constructed these pulleys from high quality CNC machined billet aluminum to provide lightweight without sacrificing strength. The anodized finish seals the aluminum and preserves the appearance. Most important, these lightweight pulleys improve throttle response and increases acceleration by putting more horsepower and torque to the wheels.