S&S Cycle 132" Big Bore Engine Performance Kit for M8

Unleash incredible power from your Harley-Davidson Milwaukee-Eight engine with the S&S Cycle 132" Big Bore Kit. This comprehensive bolt-on performance package is engineered to transform your 114" or 117" M8 into a formidable 132" powerhouse, delivering a significant boost in displacement and performance without requiring any case machining.

Description

The S&S Cycle 132" Big Bore Kit is a direct bolt-on solution designed to elevate your M8 engine's capabilities, boosting displacement to a massive 132". This kit features robust 4.320" big bore cylinders paired with high-strength 11.0:1 forged pistons, ensuring exceptional compression and durability for demanding riding. At its core is the high-performance HPT496 cam, specifically engineered for big bore applications to deliver optimal power and torque across the RPM range. The integrated S&S oil pump and cam plate system provides superior lubrication and cooling, incorporating independent scavenge sections for the flywheel cavity and cam chest, debris screens in both pickups, and a magnet in the cam chest to prevent contaminants from reaching the pump. An adjustable pressure relief valve allows for fine-tuning even after installation, optimizing oil flow. This kit also includes S&S Quickee pushrods with chrome pushrod tubes, premium tappets, and hard-anodized, billet aluminum tappet cuffs for a robust valvetrain. High-performance conical single wire S&S valve springs are included, compatible with cams up to 0.605" lift, ensuring reliable valve control. A multi-layered steel (MLS) head gasket provides a dependable seal. Designed for seamless integration, this performance kit retains stock engine height, works perfectly with stock crankcases and both stock and S&S roller rocker arms, and preserves your original engine serial numbers. Proudly Made in the USA, it’s a complete upgrade for serious M8 enthusiasts.

Features & Highlights

• Massive Displacement Increase: Transform your 114"/117" M8 engine into a potent 132" without costly case machining, offering a direct bolt-on power upgrade.
• Optimized Power & Durability: Features 4.320" big bore cylinders paired with 11.0:1 forged pistons and an HPT496 cam, engineered for peak performance and long-term reliability.
• Advanced Oil Management System: Integrated S&S oil pump and cam plate with independent scavenge sections, debris screens, and a cam chest magnet ensure superior lubrication and engine longevity.
• Premium Valvetrain Components: Equipped with S&S Quickee pushrods, premium tappets, billet aluminum tappet cuffs, and high-performance valve springs compatible with up to 0.605" lift cams.
• Seamless Integration: Designed to retain stock engine height, work with original crankcases and rocker arms, and preserve your engine's serial numbers for hassle-free installation and compliance.
• Complete Performance Package: Includes an MLS head gasket and a distinctive 132 cam cover badge, all proudly Made in the USA.

Technical Specifications

• Type: Engine Performance Kit
• Model: Power Package
• Style: HPT496 Series
• Displacement: 132"
• Bore Size: 4.320"
• Compression Ratio: 11.0:1
• Cam Model: HPT496
• Cam Drive Type: Chain
• Cooling System: Oil Cooled
• Color/Finish: Black Granite
• Pushrod Tubes: Chrome
• Valve Spring Compatibility: Cams up to 0.605" lift
• Manufacturing: Made in the USA
• Vendor Part Number: 310-1388

Free shipping to GLS parcel shop parcel box for purchases over DKK 1,000.

GLS home delivery costs DKK 59.

We do our best to ship your order as quickly as possible. All orders are generally packed within 24 hours on weekdays.

There is a 14-day return policy. Read more