{"product_id":"s-s-cycle-129-power-package-big-bore-kit-for-m8-107","title":"S\u0026S Cycle 129\" Power Package Big Bore Kit for M8 107\"","description":"\u003cp\u003eUnleash the full potential of your Harley-Davidson® Milwaukee-Eight® 107\" engine with the S\u0026amp;S Cycle 129\" Power Package Big Bore Kit. This comprehensive, bolt-on upgrade transforms your M8 into a formidable 129\" powerhouse, delivering significant gains in horsepower and torque without requiring any case machining.\u003c\/p\u003e\u003ch2\u003eDescription\u003c\/h2\u003e\u003cp\u003eDesigned for motorcycle enthusiasts seeking a substantial performance boost, the S\u0026amp;S Cycle 129\" Power Package is a complete bolt-on solution to elevate your 107\" Milwaukee-Eight® engine. This kit features high-quality 4.32\" bore cylinders paired with robust 11.0:1 compression ratio forged pistons, meticulously engineered to achieve a 129\" displacement. The heart of this upgrade includes an S\u0026amp;S oil pump and cam plate, finished with a distinctive blue anodized coating, ensuring superior lubrication and engine longevity. It boasts independent scavenge sections for both the flywheel cavity and cam chest, alongside debris screens and a magnet in the cam chest to prevent harmful particles from entering the oil system. Oil flow capacity is significantly increased on both the feed and scavenge sides, while an adjustable pressure relief valve allows for fine-tuning even after installation. The kit is further enhanced with S\u0026amp;S Quickee pushrods, premium tappets, and hard-anodized, black-coated billet aluminum tappet cuffs. Performance is amplified by S\u0026amp;S 550 cams, specifically designed for big bore applications, and high-performance conical single-wire valve springs capable of handling cams up to 0.605\" lift. Proudly Made in the USA, this S\u0026amp;S Cycle big bore kit is compatible with VVT models, offering a premium upgrade for your M8.\u003c\/p\u003e\u003ch2\u003eFeatures \u0026amp; Highlights\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eEffortless Power Upgrade:\u003c\/strong\u003e Transform your 107\" Milwaukee-Eight® engine into a massive 129\" displacement with 4.32\" bore cylinders and 11.0:1 compression ratio forged pistons, all through a straightforward bolt-on installation that requires no case machining.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptimized Engine Longevity:\u003c\/strong\u003e Features an S\u0026amp;S oil pump and cam plate with a blue anodized finish, incorporating independent scavenge sections, debris screens, and a cam chest magnet to ensure superior oil cleanliness and component protection.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEnhanced Oil System Performance:\u003c\/strong\u003e Benefit from increased oil flow capacity on both the feed and scavenge sides, plus an adjustable pressure relief valve that can be fine-tuned while installed in the engine for optimal lubrication.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Performance Valvetrain:\u003c\/strong\u003e Includes S\u0026amp;S Quickee pushrods, premium tappets, and hard-anodized, black-coated billet aluminum tappet cuffs for reliable, high-lift operation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBig Bore Specific Cams:\u003c\/strong\u003e Equipped with S\u0026amp;S 550 cams, precisely designed to maximize the performance of big bore applications, complemented by high-performance conical single-wire valve springs supporting up to 0.605\" lift.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAmerican-Made Quality:\u003c\/strong\u003e Experience superior craftsmanship and reliability with components proudly Made in the USA.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e S\u0026amp;S Cycle\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Name:\u003c\/strong\u003e Power Package\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e Performance Kit (550C)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDisplacement:\u003c\/strong\u003e 129\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBore Size:\u003c\/strong\u003e 4.32\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStroke Length:\u003c\/strong\u003e 4.375\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompression Ratio:\u003c\/strong\u003e 11.0:1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCam Drive Type:\u003c\/strong\u003e Chain\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCam Lift Support:\u003c\/strong\u003e Up to 0.605\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCooling System:\u003c\/strong\u003e Oil Cooled\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor\/Finish:\u003c\/strong\u003e Non-Highlighted Fins, Wrinkle Black\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eFeatures:\u003c\/strong\u003e Black Pushrod Tubes, Cam Chain Tensioner\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnits:\u003c\/strong\u003e Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVendor Part Number:\u003c\/strong\u003e 310-1226D\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eImportant to Know\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eNot for any Trike models.\u003c\/li\u003e\n\u003cli\u003eIntake\/rocker cover gaskets not included.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"S\u0026s Cycle","offers":[{"title":"Default Title","offer_id":62381482312010,"sku":"09040207","price":5831.95,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0971\/0016\/9546\/files\/f4f82356ebcb802ce7102a7424480f3e.webp?v=1781740261","url":"https:\/\/partsdenmark.com\/es\/products\/s-s-cycle-129-power-package-big-bore-kit-for-m8-107","provider":"Parts Denmark","version":"1.0","type":"link"}