S&S Cycle 132" Big Bore Kit for M8 Engines

Unleash incredible power and torque from your Harley-Davidson M8 engine with the S&S Cycle 132" Big Bore Kit. This comprehensive bolt-in power package dramatically increases your engine's displacement, transforming your 114"/117" Milwaukee-Eight into a formidable 132" powerhouse without requiring any case machining.

Description

The S&S Cycle 132" Big Bore Kit is engineered to deliver a significant performance boost for your Harley-Davidson M8 engine. Designed as a direct bolt-in solution, this high-performance engine kit upgrades existing 114" or 117" Milwaukee-Eight engines to a massive 132" displacement. The package features precisely engineered 4.32" bore cylinders paired with robust 11.0:1 compression ratio forged pistons, ensuring exceptional power and durability. A key component of this comprehensive upgrade is the advanced S&S oil pump/cam plate, distinguished by its striking blue anodized finish. This system includes independent scavenge sections for both the flywheel cavity and cam chest, along with debris screens and a cam chest magnet, all designed to optimize oil flow and engine longevity. The adjustable pressure relief valve allows for fine-tuning even after installation.

Further enhancing this Milwaukee-Eight 132 inch kit are the Quickee pushrods, S&S premium tappets, and durable hard-anodized, black-coated billet aluminum tappet cuffs. The included S&S 550 cams are specifically designed for big bore applications, complemented by high-performance conical single wire valve springs capable of handling up to 0.605" lift. This entire power package, proudly made in the USA, ensures superior quality and reliability. It is compatible with VVT models, offering a versatile upgrade path for many riders seeking a substantial increase in engine performance and a true Harley-Davidson M8 engine upgrade.

Features & Highlights

• Experience a dramatic increase in displacement from 114"/117" to a powerful 132" on your M8 engine, all with a convenient bolt-in design that requires no case machining.
• Benefit from high-performance 4.32" bore cylinders and 11.0:1 compression ratio forged pistons, engineered for maximum power and reliability.
• Optimize engine lubrication and longevity with the advanced S&S oil pump/cam plate, featuring independent scavenge sections, debris screens, a cam chest magnet, and an adjustable pressure relief valve.
• Ensure precise valve train operation and durability with Quickee pushrods, S&S premium tappets, and robust hard-anodized billet aluminum tappet cuffs.
• Unleash aggressive power delivery with S&S 550 cams, specifically designed for big bore applications, combined with high-performance valve springs supporting up to 0.605" lift.
• Proudly made in the USA, guaranteeing superior quality, craftsmanship, and trusted S&S performance.

Technical Specifications

• Brand: S&S Cycle
• Product Name: Power Package
• Model: Performance Kit
• Style: 550C
• Displacement: 132"
• Bore Size: 4.32"
• Stroke Length: 4.5"
• Compression Ratio: 11.0:1
• Cam Drive Type: Chain
• Cooling System: Water Cooled
• Color/Finish: Highlighted Fins, Black Granite
• Included Components: Quickee Pushrods with Chrome Covers, Cam Chain Tensioner
• Vendor Part Number: 310-1235D
• Units: Kit

Important to Know

• Fits VVT models.
• Not compatible with any Trike models.
• Intake and rocker cover gaskets are not included.