{"product_id":"s-s-cycle-129-power-package-engine-performance-kit-for-m8","title":"S\u0026S Cycle 129\" Power Package Engine Performance Kit for M8","description":"\u003cp\u003eUnleash incredible power from your 107\" Milwaukee-Eight® engine with the \u003cstrong\u003eS\u0026amp;S Cycle 129\" Power Package engine performance kit\u003c\/strong\u003e. This comprehensive bolt-on upgrade transforms your M8, boosting displacement to 129\" without requiring any case machining, making for a straightforward installation and a significant motorcycle engine upgrade.\u003c\/p\u003e\n\u003ch2\u003eDescription\u003c\/h2\u003e\n\u003cp\u003eDesigned for motorcycle enthusiasts seeking a substantial power boost, the S\u0026amp;S Cycle 129\" Power Package delivers an immediate performance increase to your 107\" M8 engine. This kit features robust 4.320\" big bore cylinders paired with 11.0:1 forged pistons, engineered to deliver maximum horsepower and torque. The included S\u0026amp;S oil pump and cam plate system ensures superior lubrication, featuring independent scavenge sections for both the flywheel cavity and cam chest, complete with debris screens and a magnet to prevent contaminants from reaching the pump. This enhanced oil flow capacity and protection contribute to the longevity and reliability of your high-performance engine.\u003c\/p\u003e\n\u003cp\u003eInstallation is simplified with Quickee pushrods and pushrod tubes, alongside S\u0026amp;S premium tappets and hard-anodized, billet aluminum tappet cuffs for exceptional durability. The adjustable pressure relief valve allows for fine-tuning even after installation, providing flexibility for various riding conditions. The kit incorporates S\u0026amp;S valve springs, compatible with cams up to 0.605\" lift, and the high-performance HPT496 cam, specifically designed for big bore applications. A multi-layered steel (MLS) head gasket ensures a robust, leak-free seal. Notably, this \u003cstrong\u003eHarley-Davidson M8 big bore kit\u003c\/strong\u003e retains stock engine height, works with stock crankcases, and preserves your original engine serial numbers, making it a seamless and compliant \u003cstrong\u003ebolt-on M8 power package\u003c\/strong\u003e. Compatible with both stock and S\u0026amp;S roller rocker arms, and first or second-generation stock valve springs, this kit is truly a comprehensive solution.\u003c\/p\u003e\n\u003ch2\u003eFeatures \u0026amp; Highlights\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eTransforms your 107\" M8 engine into a powerful 129\" powerhouse with a bolt-on design, requiring no case machining for easier installation.\u003c\/li\u003e\n\u003cli\u003eEquipped with 4.320\" big bore cylinders and 11.0:1 forged pistons, delivering a significant increase in compression and engine output.\u003c\/li\u003e\n\u003cli\u003eFeatures an advanced S\u0026amp;S oil pump\/cam plate with independent scavenge sections, debris screens, and a cam chest magnet for superior lubrication and engine protection.\u003c\/li\u003e\n\u003cli\u003eIncludes Quickee pushrods, premium tappets, and hard-anodized billet aluminum tappet cuffs for enhanced durability and simplified maintenance.\u003c\/li\u003e\n\u003cli\u003eOptimized with an HPT496 cam and high-performance conical valve springs (up to 0.605\" lift) specifically engineered for big bore applications.\u003c\/li\u003e\n\u003cli\u003eMaintains stock engine height, works seamlessly with stock crankcases, and retains original engine serial numbers for a hassle-free upgrade.\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\u003eProduct Name: Power Package\u003c\/li\u003e\n\u003cli\u003eModel: HPT496 Series\u003c\/li\u003e\n\u003cli\u003eDisplacement: 129\"\u003c\/li\u003e\n\u003cli\u003eBore Size: 4.320\"\u003c\/li\u003e\n\u003cli\u003eCompression Ratio: 11.0:1\u003c\/li\u003e\n\u003cli\u003eCam Drive Type: Gear\u003c\/li\u003e\n\u003cli\u003eCooling System: Oil Cooled\u003c\/li\u003e\n\u003cli\u003eColor\/Finish: Black, Highlighted Fins\u003c\/li\u003e\n\u003cli\u003eFeatures: Chrome Pushrod Tubes\u003c\/li\u003e\n\u003cli\u003eUnits: Kit\u003c\/li\u003e\n\u003cli\u003eVendor Part Number: 310-1399\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"S\u0026s Cycle","offers":[{"title":"Default Title","offer_id":62381481754954,"sku":"09040185","price":5892.95,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0971\/0016\/9546\/files\/8af5e05f0982bf4647dc369674dbe611.webp?v=1781740247","url":"https:\/\/partsdenmark.de\/products\/s-s-cycle-129-power-package-engine-performance-kit-for-m8","provider":"Parts Denmark","version":"1.0","type":"link"}