{"product_id":"s-s-cycle-128-big-bore-power-package-kit","title":"S\u0026s Cycle 128\" Big Bore Power Package Kit","description":"\u003cp\u003eUnleash the full potential of your motorcycle engine with the \u003cstrong\u003eS\u0026amp;s Cycle 128\" Big Bore Power Package\u003c\/strong\u003e. This comprehensive kit delivers a significant boost in displacement and performance, featuring high-quality forged pistons, a performance camshaft, and an advanced oil pump system designed for a true bolt-in upgrade.\u003c\/p\u003e\n\n\u003ch2\u003eDescription\u003c\/h2\u003e\n\u003cp\u003eThe S\u0026amp;s Cycle 128\" Big Bore Power Package is an expertly engineered motorcycle engine upgrade designed to deliver unparalleled power and reliability. With an impressive 128\" displacement, achieved through a 4.250\" bore and 4.500\" stroke, this kit dramatically increases your engine's output. The heart of this system includes durable forged pistons and an updated profile, ensuring robust performance and longevity even under extreme conditions. Boasting a commanding 11.1:1 compression ratio, you'll experience a noticeable surge in acceleration and torque.\u003c\/p\u003e\n\u003cp\u003eThis comprehensive performance kit features a precision-machined billet aluminum oil pump\/cam plate, engineered for superior oil management. It includes independent scavenge sections for both the flywheel cavity and camchest, debris screens in both scavenge pickups, and a magnet in the camchest to prevent harmful debris from entering the pump. With increased oil flow capacity on both the feed and scavenge sides, and a pressure relief valve that's adjustable while installed, your engine's lubrication is optimized. The kit also integrates S\u0026amp;s Cycle's renowned 550 camshaft, paired with Quickee pushrods and premium tappets featuring hard-anodized, billet aluminum, black-coated tappet cuffs for exceptional stability in high-lift and high-RPM situations. Valve springs are included, designed to work seamlessly with camshafts up to 0.605\" lift, complete with top collars, keepers, valve seals, and bottom collars. Proudly made in the USA, this power package is a true bolt-in solution, requiring no case machining and compatible with VVT models, making it an accessible yet powerful engine upgrade.\u003c\/p\u003e\n\n\u003ch2\u003eFeatures \u0026amp; Highlights\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eExperience a significant power boost with the bolt-in 128\" displacement and 11.1:1 compression ratio, featuring an updated profile and durable forged pistons for superior performance.\u003c\/li\u003e\n\u003cli\u003eEnhance engine longevity and lubrication with the precision-machined billet aluminum oil pump\/cam plate, offering independent scavenge sections, debris screens, and a camchest magnet for optimal oil management.\u003c\/li\u003e\n\u003cli\u003eOptimize valvetrain stability and performance with S\u0026amp;s Cycle's 550 camshaft, Quickee pushrods, and premium tappets featuring hard-anodized billet aluminum cuffs, designed for high lift and RPM scenarios.\u003c\/li\u003e\n\u003cli\u003eEnsure robust valve control with included valve springs, top collars, keepers, valve seals, and bottom collars, compatible with camshafts up to 0.605\" lift.\u003c\/li\u003e\n\u003cli\u003eEnjoy hassle-free installation with a true bolt-in design that requires no case machining, compatible with VVT models.\u003c\/li\u003e\n\u003cli\u003eProudly made in the USA, ensuring exceptional quality, reliability, and precision engineering.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eModel: Performance Kit\u003c\/li\u003e\n\u003cli\u003eStyle: 550G\u003c\/li\u003e\n\u003cli\u003eBore Size: 4.250\"\u003c\/li\u003e\n\u003cli\u003eColor\/Finish: Highlighted Fins, Black Granite\u003c\/li\u003e\n\u003cli\u003eDisplacement: 128\"\u003c\/li\u003e\n\u003cli\u003eStroke Length: 4.500\"\u003c\/li\u003e\n\u003cli\u003eCam Drive Type: Gear\u003c\/li\u003e\n\u003cli\u003eCooling System: Oil Cooled\u003c\/li\u003e\n\u003cli\u003eCompression Ratio: 11.1:1\u003c\/li\u003e\n\u003cli\u003eS\u0026amp;s Cycle Part Number: 310-1110D\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eImportant to Know\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eNot for any Trike models.\u003c\/li\u003e\n\u003cli\u003eIntake\/rocker cover gaskets are not included.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"S\u0026s Cycle","offers":[{"title":"Default Title","offer_id":62381482049866,"sku":"09040203","price":6314.95,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0971\/0016\/9546\/files\/29c5029c1dc66ce90352db375e80ea65.webp?v=1781740253","url":"https:\/\/partsdenmark.com\/es\/products\/s-s-cycle-128-big-bore-power-package-kit","provider":"Parts Denmark","version":"1.0","type":"link"}