{"product_id":"s-s-cycle-129-power-package-engine-kit-for-m8","title":"S\u0026S Cycle 129\" Power Package Engine Kit for M8","description":"\u003cp\u003eTransform your 107\" Milwaukee-Eight engine into a formidable 129\" powerhouse with the \u003cstrong\u003eS\u0026amp;S Cycle 129\" Big Bore Kit\u003c\/strong\u003e. This comprehensive bolt-on performance package is engineered to deliver a significant boost in displacement and raw power, all without the need for complicated case machining.\u003c\/p\u003e\n\u003ch2\u003eDescription\u003c\/h2\u003e\n\u003cp\u003eThis S\u0026amp;S Cycle 129\" Big Bore Kit is meticulously designed to elevate the performance of your Harley-Davidson M8 engine. Featuring robust \u003cstrong\u003e4.32\" bore cylinders\u003c\/strong\u003e and high-performance \u003cstrong\u003e11.0:1 compression ratio forged pistons\u003c\/strong\u003e, this kit ensures a dramatic increase in displacement from 107\" to a staggering 129\". The true advantage lies in its bolt-on design, eliminating the need for complex and costly case machining, making it an accessible upgrade for serious riders.\u003c\/p\u003e\n\u003cp\u003eBeyond just displacement, the kit includes an advanced S\u0026amp;S oil pump and cam plate, boasting a sleek blue anodized finish. This system is engineered for superior lubrication, featuring independent scavenge sections for both the flywheel cavity and cam chest, ensuring optimal oil return and reduced oil starvation. Debris screens in both scavenge pickups, along with a magnet in the cam chest, provide crucial protection against harmful contaminants entering the oil pump. Increased oil flow capacity on both the feed and scavenge sides, coupled with an adjustable pressure relief valve, guarantees consistent oil pressure and engine longevity.\u003c\/p\u003e\n\u003cp\u003eFurther enhancing performance are the S\u0026amp;S 550 cams, specifically designed for big bore applications, paired with Quickee pushrods and S\u0026amp;S premium tappets. The billet aluminum, hard-anodized, black-coated tappet cuffs provide exceptional durability. High-performance conical single wire valve springs are included, capable of handling cams with up to 0.605\" lift, ensuring reliable valve train operation even under extreme conditions. Every component in this \u003cstrong\u003eM8 engine upgrade\u003c\/strong\u003e reflects S\u0026amp;S Cycle's commitment to quality and performance, promising a durable and exhilarating riding experience. All necessary gaskets, bearings, and hardware are included for a straightforward bolt-on installation, making your transition to a more powerful engine seamless. Proudly \u003cstrong\u003eMade in the USA\u003c\/strong\u003e, this performance kit is a testament to American engineering excellence.\u003c\/p\u003e\n\u003ch2\u003eFeatures \u0026amp; Highlights\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMassive Displacement Increase:\u003c\/strong\u003e Transforms your 107\" M8 engine to a powerful 129\" with 4.32\" bore cylinders and 11.0:1 compression forged pistons, delivering a significant boost in torque and horsepower.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEffortless Bolt-On Installation:\u003c\/strong\u003e Designed for direct fitment without requiring any costly or time-consuming case machining, simplifying your upgrade process.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdvanced S\u0026amp;S Oil System:\u003c\/strong\u003e Includes a blue anodized S\u0026amp;S oil pump\/cam plate with independent scavenge sections, debris screens, and a cam chest magnet for superior lubrication, filtration, and engine protection.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptimized Valvetrain Components:\u003c\/strong\u003e Features S\u0026amp;S 550 cams for big bore applications, Quickee pushrods, premium tappets, and billet aluminum tappet cuffs, ensuring robust and reliable valve train operation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Performance Valve Springs:\u003c\/strong\u003e Conical single wire spring design supports cams up to 0.605\" lift, providing excellent stability and performance for aggressive cam profiles.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete Installation Kit:\u003c\/strong\u003e Comes with all necessary gaskets, bearings, and hardware for a comprehensive and hassle-free bolt-on installation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProudly Made in the USA:\u003c\/strong\u003e Engineered and manufactured in the United States, ensuring top-tier quality and craftsmanship.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Name:\u003c\/strong\u003e Performance Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Engine\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e Power Package\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUnits:\u003c\/strong\u003e Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDisplacement:\u003c\/strong\u003e 129\" (4.32\" Bore x 4-3\/8\" Stroke)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompression Ratio:\u003c\/strong\u003e 11.0:1\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCooling System:\u003c\/strong\u003e Oil Cooled\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCam Drive Type:\u003c\/strong\u003e Gear\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\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVendor Part Number:\u003c\/strong\u003e 310-1228C\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eImportant to Know\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCompatibility Restriction:\u003c\/strong\u003e Not for use with any Trike models.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"S\u0026s Cycle","offers":[{"title":"Default Title","offer_id":62381479362890,"sku":"09040157","price":4875.95,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0971\/0016\/9546\/files\/bfe7e2d031eff2bbb4101b5c9d9acea8.webp?v=1781740131","url":"https:\/\/partsdenmark.de\/products\/s-s-cycle-129-power-package-engine-kit-for-m8","provider":"Parts Denmark","version":"1.0","type":"link"}