S&S Cycle 132 Power Package Big Bore Kit for M8

Unleash extreme power from your Harley-Davidson Milwaukee-Eight engine with the S&S Cycle 132 Power Package Big Bore Kit. This comprehensive bolt-in upgrade transforms your 114" or 117" M8 into a formidable 132" powerhouse, delivering a significant boost in displacement and performance without requiring case machining.

Description

The S&S Cycle 132 Power Package is engineered to provide a substantial performance increase for your Milwaukee-Eight M8 engine, boosting displacement from 114"/117" to an impressive 132". This kit features 4.32" bore cylinders paired with 11.0:1 compression ratio forged pistons, ensuring robust power delivery and enhanced durability. The bolt-in design eliminates the need for complicated case machining, making installation more straightforward for experienced mechanics.

At the heart of this upgrade is a high-performance S&S oil pump and cam plate, finished with a distinctive blue anodized coating. Designed for superior oil management, it includes independent scavenge sections for both the flywheel cavity and cam chest, along with debris screens in both scavenge pickups and a magnet in the cam chest to protect vital components. Increased oil flow capacity on both the feed and scavenge sides ensures optimal lubrication, while an adjustable pressure relief valve allows fine-tuning even with the unit installed. The kit is rounded out with S&S Quickee pushrods, premium tappets, hard-anodized black coated billet aluminum tappet cuffs, and S&S 550 cams specifically designed for big bore applications. High-performance conical single wire valve springs, capable of handling cams up to 0.605" lift, complete the valve train. Made in the USA, this package includes all necessary exhaust, cylinder base, and head gaskets for a complete installation.

Features & Highlights

• Effortless Bolt-In Installation: Upgrade your 114"/117" M8 engine to 132" displacement without any case machining, simplifying the installation process.
• Massive Power & Displacement Increase: Transforms your Milwaukee-Eight engine into a 132" powerhouse with 4.32" bore cylinders and 11.0:1 compression ratio forged pistons for exceptional performance.
• Optimized Oil System Reliability: Features an S&S oil pump/cam plate with independent scavenge sections, debris screens, cam chest magnet, and increased oil flow for superior lubrication and engine longevity.
• Adjustable Pressure Relief Valve: Fine-tune oil pressure with an adjustable valve that can be serviced and adjusted even when installed in the engine.
• Premium Valve Train Components: Includes S&S Quickee pushrods, premium tappets, billet aluminum tappet cuffs, S&S 550 cams, and high-performance valve springs supporting up to 0.605" lift.
• Complete Gasket Kit: Comes with exhaust, cylinder base, and head gaskets, providing everything needed for a seamless installation.
• American Made Quality: Proudly manufactured in the USA, ensuring high standards of craftsmanship and durability.

Technical Specifications

• Product Name: Performance Kit
• Type: Engine Power Package
• Displacement: 132 cubic inches
• Bore Size: 4.32"
• Stroke Length: 4.5"
• Compression Ratio: 11.0:1
• Cooling System: Water Cooled
• Cam Drive Type: Chain
• Valve Lift Capacity: Up to 0.605"
• Color/Finish: Highlighted Fins, Wrinkle Black (cylinders), Blue Anodized (oil pump/cam plate)
• Units: Kit
• Vendor Part Number: 310-1229C
• MPN/SKU: 09040169
• Manufacturing: Made in the USA

Important to Know

• Not for 121" CVO models.
• Not for any Trike models.
• Requires a 114" or 117" Milwaukee-Eight engine with 4.5" stroke for direct bolt-in fitment.

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