{"product_id":"s-s-cycle-129-power-package-engine-performance-kit-for-m8-1","title":"S\u0026S Cycle 129\" Power Package Engine Performance Kit for M8","description":"\u003cp\u003eElevate your Harley-Davidson Milwaukee-Eight 107\" engine to a formidable 129\" with the S\u0026amp;S Cycle Power Package Engine Performance Kit. This comprehensive big bore bolt-on upgrade delivers a significant boost in displacement and power, transforming your ride without requiring complex case machining.\u003c\/p\u003e\n\u003ch2\u003eDescription\u003c\/h2\u003e\n\u003cp\u003eThe \u003cstrong\u003eS\u0026amp;S Cycle 129 engine performance kit\u003c\/strong\u003e is engineered to provide a substantial power increase for your 107\" Milwaukee-Eight engine. This premium \u003cstrong\u003eHarley-Davidson M8 big bore kit\u003c\/strong\u003e features massive 4.320\" cylinders paired with durable 11.0:1 forged pistons, ensuring robust performance and longevity. A key advantage of this S\u0026amp;S Cycle 129 engine performance kit is its bolt-on design, eliminating the need for any case machining and making installation more straightforward. The kit includes an advanced S\u0026amp;S oil pump and cam plate with independent scavenge sections for both the flywheel cavity and cam chest, optimizing oil flow and scavenging efficiency. Debris screens in the scavenge pickups and a magnet in the cam chest further protect your engine by preventing contaminants from entering the oil pump. The adjustable pressure relief valve can even be fine-tuned while installed. Complementing the big bore setup are S\u0026amp;S Quickee pushrods with tubes, premium tappets, and billet aluminum hard-anodized black coated tappet cuffs. High-performance conical single wire valve springs, designed to work with cams up to 0.605\" lift, are also included. At the heart of this \u003cstrong\u003ehigh performance engine upgrade\u003c\/strong\u003e is the \u003cstrong\u003eS\u0026amp;S Cycle HPT496 cam\u003c\/strong\u003e, specifically designed for big bore applications to maximize horsepower and torque. All components are meticulously crafted in the USA, ensuring exceptional quality and reliability. This \u003cstrong\u003ebolt-on power package\u003c\/strong\u003e is designed to retain stock engine height, works seamlessly with stock crankcases, and is compatible with both stock and S\u0026amp;S roller rocker arms, preserving your original engine serial numbers.\u003c\/p\u003e\n\u003ch2\u003eFeatures \u0026amp; Highlights\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eExperience a significant power boost with the \u003cstrong\u003eS\u0026amp;S Cycle 129 engine performance kit\u003c\/strong\u003e, transforming your 107\" Milwaukee-Eight into a high-performance 129\" powerhouse. This true bolt-on big bore solution requires no case machining, simplifying installation and getting you back on the road faster.\u003c\/li\u003e\n\u003cli\u003eEquipped with robust 4.320\" big bore cylinders and durable 11.0:1 forged pistons, this kit ensures exceptional strength and longevity, built to withstand the demands of increased displacement and power.\u003c\/li\u003e\n\u003cli\u003eThe included S\u0026amp;S oil pump and cam plate feature independent scavenge sections for superior oil management, along with debris screens and a cam chest magnet to protect critical engine components from contamination, ensuring optimal lubrication and extended engine life.\u003c\/li\u003e\n\u003cli\u003eOptimize your valvetrain with S\u0026amp;S Quickee pushrods, premium tappets, billet aluminum tappet cuffs, and high-performance conical valve springs, designed to support cams up to 0.605\" lift for maximum power potential.\u003c\/li\u003e\n\u003cli\u003eHarness the full potential of your big bore setup with the specially engineered HPT496 cam, meticulously designed to deliver optimal horsepower and torque gains for this displacement, providing a thrilling ride experience.\u003c\/li\u003e\n\u003cli\u003eProudly \u003cstrong\u003eMade in the USA\u003c\/strong\u003e, this S\u0026amp;S Cycle power package maintains stock engine height and is compatible with stock crankcases and rocker arms, ensuring seamless integration and preserving your original engine serial numbers.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eType: Engine Performance Kit\u003c\/li\u003e\n\u003cli\u003eModel: HPT496 Series\u003c\/li\u003e\n\u003cli\u003eBore Size: 4.320\"\u003c\/li\u003e\n\u003cli\u003eDisplacement: 129\"\u003c\/li\u003e\n\u003cli\u003eCompression Ratio: 11.0:1\u003c\/li\u003e\n\u003cli\u003eCam Drive Type: Chain\u003c\/li\u003e\n\u003cli\u003eCooling System: Oil Cooled\u003c\/li\u003e\n\u003cli\u003eColor\/Finish: Black, Highlighted Fins\u003c\/li\u003e\n\u003cli\u003eVendor Part Number: 310-1396\u003c\/li\u003e\n\u003cli\u003eMade in USA: Yes\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"S\u0026s Cycle","offers":[{"title":"Default Title","offer_id":62381481787722,"sku":"09040182","price":26099.0,"currency_code":"DKK","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0971\/0016\/9546\/files\/24cff694f03565ff2e677e2eb051dfcf.webp?v=1781740249","url":"https:\/\/partsdenmark.dk\/products\/s-s-cycle-129-power-package-engine-performance-kit-for-m8-1","provider":"Parts Denmark","version":"1.0","type":"link"}