S&S Cycle M8 Engine Performance Kit - Black Granite - 310-1107B

Unleash the full potential of your Milwaukee-Eight engine with the S&S Cycle 128" Power Package Engine Performance Kit. This comprehensive kit delivers a significant power increase, transforming your 114" or 117" M-Eight into a fire-breathing 128 cubic inch powerhouse. Designed for bolt-on installation, this kit requires no case machining, making it an accessible upgrade for enthusiasts and professionals alike.

Description

The S&S Cycle 128" Big Bore Kit features 4.250" bore cylinders paired with high-compression 11.1:1 forged pistons, optimizing combustion efficiency for maximum power output. The kit includes an S&S oil pump and cam plate with a distinctive blue anodized finish, ensuring superior oil delivery and scavenging. Independent scavenge sections for the flywheel cavity and cam chest, along with debris screens and a cam chest magnet, provide enhanced oil cleanliness and engine protection. The increased oil flow capacity and adjustable pressure relief valve allows fine-tuning for optimal performance. S&S Quickee pushrods and premium tappets, combined with hard-anodized, black-coated tappet cuffs, enhance valve train stability at high RPMs. Paired with S&S 550 cams, these valve springs are designed to work with cams up to 0.605" lift, ensuring reliable high-performance operation.

Features & highlights

• Transforms 114"/117" M-Eight engines into a high-performance 128" powerhouse.
• No case machining required for easy bolt-on installation.
• High-compression 11.1:1 forged pistons maximize combustion efficiency.
• S&S oil pump and cam plate with independent scavenge sections ensure superior oil delivery and engine protection.
• Quickee pushrods and premium tappets enhance valve train stability.
• Includes all necessary gaskets, bearings, and hardware for a seamless installation.
• Proudly made in the U.S.A.

Technical specifications

• Brand: S&S Cycle
• Displacement: 128"
• Bore Size: 4.250"
• Stroke Length: 4.500"
• Compression Ratio: 11.1:1
• Cam Drive Type: Chain
• Cooling System: Oil Cooled, Water Cooled
• Type: Engine Performance Kit
• Color/Finish: Black Granite with Highlighted Fins

Important to know

This kit requires professional installation. All necessary gaskets, bearings, and hardware for bolt-on installation are included.