Adjust the amount of boost needed with our aFe POWER Pulleys. By changing the pulley diameter, you can adjust the spin rate of the supercharger, resulting in increased boost and amplified power. The aFe POWER Pulleys are meticulously crafted to achieve a perfect balance of lightweight design and high strength through precision machining. Count on our pulleys for optimal functionality, a flawless fit, and an impeccable finish, ensuring seamless enhancement to your engine's power. Pulleys crafted from high-quality 6061-T6 billet aluminum showcase exceptional characteristics. Through precision machining, these pulleys achieve a remarkable balance of lightweight and high strength, ensuring not only optimal functionality but also a perfect fit and finish.