S&S Cycle 129" Power Package Engine Kit for M8 107"

Unleash incredible power and torque with the S&S Cycle 129" M8 performance kit, designed to transform your 107" Milwaukee-Eight engine into a formidable 129" powerhouse. This comprehensive bolt-on big bore kit simplifies your engine upgrade, requiring no case machining for a straightforward installation.

Description

Experience a dramatic increase in displacement and performance with the S&S Cycle 129" Power Package Engine Kit. Engineered specifically for 107" Milwaukee-Eight models, this kit features precision-machined 4.320" big bore cylinders paired with robust 11.0:1 forged pistons, delivering a significant boost in compression and overall power. The heart of this upgrade is the high-performance HPT496 cam, meticulously designed to complement big bore applications and maximize torque and horsepower output. Included Quickee pushrods with black tubes and S&S premium tappets ensure precise valve train operation, while the billet aluminum, hard-anodized black tappet cuffs provide enhanced durability. The kit also integrates S&S valve springs, capable of handling cams up to 0.605" lift, and a high-performance conical single-wire spring design for reliable valve control. With its multi-layered steel (MLS) head gasket, you can count on a secure and long-lasting seal. This American-made kit is designed for seamless integration, retaining your stock engine height and original serial numbers, and is compatible with both stock crankcases and S&S roller rocker arms, as well as first and second-generation stock valve springs. The advanced S&S oil pump and cam plate feature independent scavenge sections for the flywheel cavity and cam chest, along with debris screens and a cam chest magnet, ensuring superior oil flow, debris protection, and engine longevity. An adjustable pressure relief valve allows for fine-tuning even after installation, highlighting the thoughtful engineering behind this comprehensive upgrade.

Features & Highlights

• Effortless 129" Big Bore Upgrade: Transform your 107" Milwaukee-Eight engine to a powerful 129" displacement with a bolt-on kit that requires no case machining, simplifying installation.
• High-Performance Power Foundation: Equipped with durable 4.320" big bore cylinders and 11.0:1 forged pistons for a significant increase in compression and robust power delivery.
• Optimized Oil System for Longevity: Features an S&S oil pump/cam plate with independent scavenge sections, debris screens, and a cam chest magnet to ensure superior lubrication, protect against contaminants, and extend engine life.
• Precision Valve Train Components: Includes an HPT496 cam, Quickee pushrods with black tubes, S&S premium tappets, and high-performance valve springs designed for cams up to 0.605" lift, ensuring optimal engine response.
• Seamless Integration & Compatibility: Designed to work flawlessly with stock crankcases, stock and S&S roller rocker arms, and both generations of stock valve springs, while retaining stock engine height and original serial numbers.
• Premium American-Made Quality: Crafted in the USA with billet aluminum tappet cuffs, an MLS head gasket, and an adjustable pressure relief valve for exceptional durability, reliability, and serviceability.

Technical Specifications

• Product Name: Power Package
• Type: Engine Performance Kit
• Model: HPT496 Series
• Displacement: 129 cu. in.
• Bore Size: 4.320"
• Compression Ratio: 11.0:1
• Cam Drive Type: Gear
• Cooling System: Oil Cooled
• Color/Finish: Black, Non-Highlighted Fins
• Features: Black Pushrod Tubes
• Units: Kit
• Vendor Part Number: 310-1397

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