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The S&S CYCLE Camshaft Kit 570G Gear Drive (Part Number 33-5267) is designed for 88 to 103-inch Twin Cam engines with compression ratios between 9:1 and 10:1. This kit offers substantial performance improvements by replacing the stock timing chain drive with a gear drive system that eliminates timing chain lash and loosely fit stock chain drives, resulting in more precise valve timing. It is engineered to operate efficiently at speeds ranging from 3,200 to 3,700 RPM, making it ideal for riders seeking increased engine responsiveness and reliability.
The gear drive assembly reverses the rear cam's rotation direction, providing additional clearance between cam lobes and enabling higher cam lifts. This adjustment helps optimize airflow and increases overall power output. Installation requires material removal from the inner surface of the stock gear cover, and professional tools such as a hydraulic press are necessary for proper assembly. S&S recommends using an adjustable pushrod and cover kit during installation to ensure proper alignment and fit. The kit includes camshafts, gear cover gasket, bearings, oil passage block-off kit, retaining ring, O-ring, and both inner and outer gears, ensuring a comprehensive upgrade for your engine.
Manufactured in the USA, this gear drive system enhances engine performance and durability. However, due to the gear drive's inherent characteristics, you may experience increased valve train noise. It is critical to check coil bind, valve-to-valve clearance, and valve-to-piston clearance during installation to prevent potential engine damage. Proper installation of this kit can significantly improve engine efficiency, response, and power output, making it a valuable upgrade for serious riders and enthusiasts alike.
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