S&S Cycle 330-0647 550G Gear Drive Camshaft Kit for Harley-Davidson Milwaukee-Eight

The S&S Cycle 550G Gear Drive Camshaft Kit is a high-performance engine upgrade designed to maximize horsepower and torque in Harley-Davidson Milwaukee-Eight engines. This complete camshaft kit is engineered for big bore applications, making it ideal for 114-inch and larger displacement engines seeking aggressive performance gains.

Gear Drive Technology:

Unlike traditional chain-driven camshafts, this gear drive system eliminates the cam drive chain and tensioner, providing superior valve timing accuracy by removing chain lash and slack. The gear drive design reverses the rear cam's direction of rotation, allowing for additional lobe clearance that enables higher valve lifts and more aggressive cam profiles.

550G Performance Profile:

The 550G grind delivers impressive valve lift of 0.550 inches for both intake and exhaust valves. Intake duration measures 218.9 degrees (front) and 214.2 degrees (rear) at 0.053-inch lift, while exhaust duration is 273.1 degrees (front) and 277.8 degrees (rear). This aggressive profile is specifically optimized to deliver maximum peak torque and horsepower in larger Milwaukee-Eight engines.

Complete Installation Kit:

This comprehensive kit includes all required precision gears, bearings, O-rings, gaskets, and mounting hardware needed for a complete installation. Every component is manufactured to S&S Cycle's exacting standards for reliability and durability.

Key Features:

• 550G grind optimized for 114-inch and larger Milwaukee-Eight engines
• 0.550-inch valve lift on intake and exhaust
• Gear drive eliminates chain and tensioner for improved timing accuracy
• Includes all bearings, O-rings, gaskets, and hardware
• Provides maximum peak torque and horsepower gains
• Proudly made in the USA

Important Installation Requirements:

This camshaft requires adjustable pushrods and heavy-duty valve springs for proper operation. S&S recommends replacing tappets whenever the camshaft is replaced. Professional installation with proper tools and clearance checking is essential.

Emissions Compliance Notice:

This product is not legal for sale or use in California on any pollution-controlled motor vehicle. Not legal for sale or use on any EPA pollution-controlled motor vehicle.