The crown wheel (ring gear) and pinion are the heart of your differential. This matched gear set is responsible for the final reduction of engine power, transferring torque to the wheels while changing the direction of power flow by 90 degrees. Whether you're rebuilding a worn-out differential or changing your vehicle's gear ratio to accommodate larger tires, a precision-engineered crown wheel and pinion set is essential for reliable, quiet operation and long-term durability.