S&S Cycle POWER PACK VVT 129" Big Bore Engine Performance Kit

Elevate your Harley-Davidson M8 VVT model's performance to new heights with the S&S Cycle POWER PACK VVT 129" Big Bore Engine Performance Kit. This comprehensive bolt-on solution is engineered to transform your 107" Milwaukee-Eight engine into a powerful 129" beast, delivering significant horsepower and torque gains without the need for complex case machining.

Description

The S&S Cycle POWER PACK VVT 129" Big Bore Kit is meticulously designed for motorcycle enthusiasts seeking a substantial M8 engine upgrade. This kit features an updated profile specifically tailored for M8 VVT models, ensuring perfect fitment and optimal operation. At its core is a high-performance S&S oil pump and cam plate assembly, designed with independent scavenge sections for both the flywheel cavity and cam chest, ensuring superior oil management. Removable passage plugs allow for easy servicing, while integrated debris screens in both scavenge pickups and a magnet in the cam chest actively prevent contaminants from reaching the oil pump. This system significantly increases oil flow capacity on both the feed and scavenge sides, enhancing engine longevity and performance. An adjustable pressure relief valve allows for fine-tuning even after installation, optimizing oil pressure for your specific setup. The kit also includes S&S Quickee pushrods with pushrod tubes, S&S premium tappets, and billet aluminum, hard anodized black coated tappet cuffs for exceptional valvetrain stability. High-performance conical single wire S&S valve springs are included, capable of supporting cams with up to 0.605" lift, paired with a robust MLS (multi-layered steel) head gasket and a specialized S&S 496 camshaft. Proudly Made in the USA, this S&S Cycle 129" Big Bore Kit retains stock engine height, works seamlessly with stock crankcases, and is compatible with both stock and S&S roller rocker arms. Your original engine serial numbers are also retained, ensuring full compliance and peace of mind.

Features & Highlights

• Significant Power Boost: Transform your 107" M8 engine into a potent 129" Milwaukee-Eight powerhouse with a straightforward bolt-on installation, eliminating the need for costly and time-consuming case machining.
• Advanced Oil Management: Benefit from the S&S oil pump/cam plate featuring independent scavenge sections for enhanced oil control, debris screens, and a magnet in the cam chest to protect vital engine components.
• Optimized Valvetrain Components: Enjoy superior reliability and performance with S&S Quickee pushrods, premium tappets, and hard anodized billet aluminum tappet cuffs, ensuring precise valve actuation.
• High-Performance Valve Springs: Utilize S&S conical single wire valve springs engineered to accommodate cam lifts up to 0.605", providing robust valvetrain stability for aggressive cam profiles.
• Precision Gasketing and Camshaft: Includes a durable MLS (multi-layered steel) head gasket and the S&S 496 camshaft, precisely engineered to complement the 129" big bore conversion.
• Seamless Compatibility: Designed to integrate flawlessly with your M8 VVT model, retaining stock engine height, working with stock crankcases, and compatible with both stock and S&S roller rocker arms.

Technical Specifications

• Engine Displacement Increase: 107" M8 to 129"
• Cam Lift Compatibility: Up to 0.605"
• Camshaft Included: S&S 496
• Gasket Type: MLS (Multi-Layered Steel) Head Gasket
• Tappet Cuffs: Billet Aluminum, Hard Anodized Black Coated
• Oil Pump/Cam Plate: S&S Independent Scavenge Sections, Debris Screens, Cam Chest Magnet
• Pressure Relief Valve: Adjustable (installable in engine)
• Pushrods: S&S Quickee with Pushrod Tubes
• Tappets: S&S Premium
• Manufacturing: Made in the USA
• Engine Height: Retains Stock
• Crankcase Compatibility: Works with Stock Crankcases
• Rocker Arm Compatibility: Works with Stock and S&S Roller Rocker Arms
• Valve Spring Compatibility: Stock (First Generation Round Port & Second Generation Oval Port)
• EAN: 09040233