S&S Cycle M8 Power Package Engine Performance Kit - 310-1228

Unleash the full potential of your 107" oil-cooled Milwaukee-Eight engine with the S&S Cycle 129" Power Package Engine Performance Kit. This comprehensive kit delivers a significant boost in displacement and performance without requiring any case machining, making it an ideal upgrade for enthusiasts and professionals alike.

Description

The S&S Cycle 129" Power Package transforms your stock 107" M8 engine into a powerhouse. This kit features big bore cylinders, a matched 550 cam, cam plate, and high-performance oil pump with independent scavenge sections for the flywheel cavity and cam chest. The inclusion of a magnet in the cam chest provides added protection by preventing debris from entering the oil pump. High-performance conical single-wire S&S valve springs ensure optimal valve train performance. Original engine serial numbers are retained, and passage plugs are removable for easy servicing. Multi-layered steel (MLS) head gaskets provide a reliable seal under high-performance conditions. This kit is designed to work seamlessly with the stock crankcase, ensuring a straightforward installation. Proudly made in the USA, the S&S Cycle 129" Power Package delivers unparalleled performance and reliability.

Features & highlights

• Transforms 107" oil-cooled M8 into a high-performance 129" engine.
• No case machining required for easy installation.
• Includes performance-matched 550 cam for optimal power delivery.
• Features independent scavenge sections for improved oiling and reduced crankcase pressure.
• Magnet in cam chest helps prevent debris from entering the oil pump.
• Retains original engine serial numbers.
• Made in the USA.

Technical specifications

• Brand: S&S Cycle
• Product Name: Performance Kit
• Type: Engine
• Displacement: 129"
• Bore Size: 4.320"
• Stroke Length: 4.375"
• Cooling System: Oil Cooled
• Cam Drive Type: Gear
• Color/Finish: Black, Non-Highlighted Fins
• Features: Black Pushrod Tubes

Important to know

This kit is designed to work with the stock crankcase. Ensure proper installation by a qualified technician.