S&S Cycle 310-1461 Power Pack Engine Performance Kit

S&S Cycle Power Packs are complete, bolt-on engine performance packages engineered for Harley-Davidson Milwaukee-Eight (M8) motorcycles. These all-inclusive kits combine a big bore cylinder and piston package with a matched cam chest upgrade — delivering a significant displacement and power increase without requiring crankcase machining.

Key Features:

• Complete big bore and cam chest kit in a single engineered package
• No crankcase machining required for installation
• Forged pistons for superior strength and durability
• High-performance conical single wire valve springs
• Includes upgraded oil pump and cam plate for consistent oil pressure
• S&S precision tappets for improved tappet stability at high lift and high RPM
• All gaskets, bearings, and hardware required for installation included
• Made in the USA

S&S Cycle Power Packs are the result of decades of American V-twin engineering expertise, designed to maximize throttle response, torque, and overall engine performance. Each kit is precision-matched so all components work together seamlessly for reliable, high-output results.