S&S Cycle Power Package Engine Performance Kit for M8

Unleash the full potential of your Harley-Davidson Milwaukee-Eight engine with the S&S Cycle 132" Power Package Engine Performance Kit. This bolt-on big bore kit is engineered to transform your 114" or 117" M8 engine with a 4.50" stroke into a formidable 132" powerhouse, all without requiring any complex case machining.

Description

The S&S Cycle 132" Power Package is a comprehensive upgrade designed for motorcycle enthusiasts seeking significant power and reliability gains. At its core, the kit features precision-engineered 4.320" big bore cylinders paired with high-compression 11.0:1 forged pistons, providing a substantial boost in displacement and combustion efficiency. This meticulous design ensures a direct bolt-on installation, saving you time and the hassle of extensive engine modifications. Beyond increased displacement, the kit integrates an advanced S&S oil pump and cam plate system, featuring independent scavenge sections for both the flywheel cavity and cam chest, along with debris screens and a magnet in the cam chest to safeguard against contaminants. This enhanced lubrication system boasts increased oil flow capacity and an adjustable pressure relief valve, ensuring optimal engine health and longevity. The valvetrain is upgraded with S&S Quickee pushrods and tubes, premium tappets, and durable billet aluminum, hard-anodized black coated tappet cuffs. Performance is further optimized by S&S valve springs, compatible with cams up to 0.605" lift, and the HPT496 cam, specifically designed for big bore applications. A multi-layered steel (MLS) head gasket provides a robust seal, and the kit proudly retains your original engine height and serial numbers, ensuring compatibility with stock crankcases, roller rocker arms, and valve springs. Made in the USA, this S&S Cycle 132" Power Package Engine Kit delivers unmatched performance and quality.

Features & Highlights

• Massive Big Bore Upgrade: Transforms 114"/117" M8 engines with 4.50" stroke to 132" displacement with a simple bolt-on installation and no case machining required.
• High-Performance Pistons & Cylinders: Features 4.320" big bore cylinders and 11.0:1 forged pistons for superior power, torque, and durability.
• Advanced Oil Management System: Includes an S&S oil pump/cam plate with independent scavenge sections, debris screens, a cam chest magnet, and increased oil flow for optimal lubrication and engine protection.
• Optimized Valvetrain Components: Equipped with S&S Quickee pushrods, premium tappets, and billet aluminum tappet cuffs for reliable and high-performance valvetrain operation.
• Big Bore Specific Cam & Valve Springs: Designed with an HPT496 cam and high-performance valve springs that accommodate cams up to 0.605" lift, perfectly matched for the increased displacement.
• Seamless Integration: Retains stock engine height and original serial numbers, ensuring compatibility with stock crankcases, roller rocker arms, and valve springs.

Technical Specifications

• Type: Engine Performance Kit
• Model: HPT496 Series Power Package
• Displacement: 132 cubic inches
• Bore Size: 4.320"
• Compression Ratio: 11.0:1
• Cam Drive Type: Gear
• Cooling System: Oil Cooled
• Max Cam Lift (Valve Springs): 0.605"
• Finish: Black with Highlighted Fins
• Made In: USA

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