S&S Cycle Power Package Engine Kit for M8

Unleash the full potential of your Milwaukee-Eight engine with the S&S Cycle 132" Power Package. This comprehensive bolt-in kit is engineered to transform your 114" or 117" M8 engine into a formidable 132" powerhouse, delivering significant gains in horsepower and torque without requiring any case machining.

Description

The S&S Cycle 132" Power Package is a meticulously engineered upgrade designed for motorcycle enthusiasts seeking maximum performance from their M8. This bolt-in solution features precision-machined 4.32" bore cylinders paired with high-strength 11.0:1 compression ratio forged pistons, working in conjunction with your existing 4.5" stroke to achieve the massive 132" displacement. The kit eliminates the need for complex and costly case machining, making installation straightforward for qualified mechanics.

At its heart, the package includes an advanced S&S oil pump and cam plate, finished in a distinctive blue anodized coating. This system boasts independent scavenge sections for both the flywheel cavity and cam chest, ensuring optimal oil evacuation and lubrication. Debris screens in both scavenge pickups, along with a strategically placed magnet in the cam chest, actively prevent contaminants from entering the oil pump, extending engine life and maintaining performance. With increased oil flow capacity on both the feed and scavenge sides, your engine receives superior lubrication under all conditions. An adjustable pressure relief valve allows for fine-tuning even after installation.

The valvetrain is fortified with S&S Quickee pushrods, premium tappets, and billet aluminum, hard-anodized black coated tappet cuffs for enhanced durability. The included S&S 550 cams are specifically designed to complement big bore applications, providing an aggressive powerband. High-performance conical single wire valve springs are engineered to work flawlessly with cams up to 0.605" lift, ensuring reliable valve control at high RPMs. Manufactured in the USA, this kit includes essential gaskets (exhaust, cylinder base, and head) to complete your high-performance conversion.

Features & Highlights

• Effortless 132" Big Bore Conversion: Transforms 114"/117" M8 engines to 132" displacement with 4.32" bore cylinders and 4.5" stroke, requiring no case machining for a straightforward bolt-in installation.
• Optimized Power & Durability: Features 11.0:1 compression ratio forged pistons for significant power gains and enhanced engine longevity under demanding conditions.
• Advanced Oil System Management: Includes an S&S oil pump/cam plate with independent scavenge sections, debris screens, a cam chest magnet, and increased oil flow capacity for superior lubrication and protection.
• Adjustable Pressure Relief Valve: Allows for precise oil pressure adjustments even after the unit is installed in the engine, offering greater control and customization.
• High-Performance Valvetrain Components: Equipped with S&S Quickee pushrods, premium tappets, billet aluminum tappet cuffs, S&S 550 cams for big bore applications, and valve springs capable of handling up to 0.605" lift.
• Comprehensive Gasket Kit Included: Comes complete with exhaust, cylinder base, and head gaskets, providing essential components for a seamless installation.

Technical Specifications

• Type: Engine Power Package
• Model: Power Package
• Units: Kit
• Bore Size: 4.32"
• Stroke Length: 4.5"
• Displacement: 132"
• Compression Ratio: 11.0:1
• Color/Finish: Highlighted Fins, Wrinkle Black, Blue Anodized (cam plate)
• Cam Drive Type: Gear
• Cooling System: Oil Cooled
• Features: Chrome Pushrod Tubes
• Vendor Part Number: 310-1232C

Important to Know

• Not compatible with 121" CVO models.
• Not compatible with any Trike models.