{"product_id":"s-s-cycle-power-packs-harley-davidson-10","title":"S\u0026S Cycle Power Pack 4.32-inch Big Bore Engine Kit - Harley-Davidson Touring, Softail, Dyna","description":"\u003c!-- vt:seo-start --\u003e\n\u003cdiv class=\"vt-brand-bio\" style=\"background:#f6f6f6;border-left:4px solid #c8102e;padding:14px 18px;margin:0 0 20px;border-radius:4px;\"\u003e\n\u003ch2 style=\"margin:0 0 6px;font-size:1.05em;\"\u003eAbout S\u0026amp;S Cycle\u003c\/h2\u003e\n\u003cp style=\"margin:0;font-size:0.95em;line-height:1.6;\"\u003eS\u0026amp;S Cycle has built American V-twin performance parts in Viola, Wisconsin since 1958 — flywheels, carburetors, cams, cylinder heads and complete crate engines. When a Harley owner talks about a 124, a 128 or a 131 build, they are usually talking about S\u0026amp;S. Few names carry more weight with engine builders in this space.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cp style=\"line-height:1.65;\"\u003eS\u0026amp;S Cycle Power Packs are comprehensive bolt-on big bore engine kits designed to transform stock Harley-Davidson engines. These kits deliver larger displacement and matched high-performance internals, providing significant power gains without custom machine work.\u003c\/p\u003e\n\u003ch3 style=\"margin:20px 0 6px;\"\u003eWhy riders pick this\u003c\/h3\u003e\u003cul style=\"padding-left:20px;margin:0 0 16px;\"\u003e\n\u003cli style=\"margin:3px 0;\"\u003eBolt-on big bore engine kit for significant power gains\u003c\/li\u003e\n\u003cli style=\"margin:3px 0;\"\u003e4.32-inch cylinders increase engine displacement\u003c\/li\u003e\n\u003cli style=\"margin:3px 0;\"\u003eIncludes matched high-performance cam and cam plate\u003c\/li\u003e\n\u003cli style=\"margin:3px 0;\"\u003eUpgraded oil pump for superior lubrication\u003c\/li\u003e\n\u003cli style=\"margin:3px 0;\"\u003eComplete cam chest package for seamless integration\u003c\/li\u003e\n\u003cli style=\"margin:3px 0;\"\u003eDesigned for reliable power and streetability\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eUnleash the full potential of your Harley-Davidson with an S\u0026amp;S Cycle Power Pack big bore engine kit. This complete package is engineered to deliver substantial horsepower gains and improved streetability by increasing your engine's displacement. It's a true bolt-on solution for riders seeking more power without extensive custom fabrication.\u003c\/p\u003e\u003ch3\u003eComplete Performance Upgrade\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e4.32-inch big bore cylinders for increased displacement\u003c\/li\u003e\n\u003cli\u003eMatched high-performance cam and cam plate for optimized timing\u003c\/li\u003e\n\u003cli\u003eUpgraded oil pump included for enhanced lubrication and reliability\u003c\/li\u003e\n\u003cli\u003eComplete cam chest package ensures all components work in harmony\u003c\/li\u003e\n\u003cli\u003eDesigned for reliability and streetable power gains\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eReady for the Road\u003c\/h3\u003e\u003cp\u003eThe S\u0026amp;S Cycle Power Pack is more than just a piston set; it's a meticulously coordinated system. Each component, from the cylinders to the cam chest, is chosen to work together for reliable performance. This kit is ideal for riders who want a significant power boost that maintains the dependable character of their Harley. Always verify your engine family and year to confirm compatibility before installation.\u003c\/p\u003e\n\u003ch3 style=\"margin:20px 0 6px;\"\u003eSpecifications\u003c\/h3\u003e\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e S\u0026amp;S Cycle\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eManufacturer Part #:\u003c\/strong\u003e 310-1051D\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e Engine Components \/ Piston Sets - Powersports\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 44.19 lb\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"margin:22px 0 8px;\"\u003eCommon questions\u003c\/h3\u003e\u003cdiv class=\"vt-faq\"\u003e\n\u003cdiv style=\"margin:0 0 12px;\"\u003e\n\u003cp style=\"margin:0 0 3px;font-weight:600;\"\u003eDo I need to have my engine machine work done, or is this bolt-on?\u003c\/p\u003e\n\u003cp style=\"margin:0;line-height:1.6;\"\u003eS\u0026amp;S Power Packs are designed as complete bolt-on kits. Most installations do not require extensive machine work if you're upgrading existing cylinders and heads.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin:0 0 12px;\"\u003e\n\u003cp style=\"margin:0 0 3px;font-weight:600;\"\u003eWill I need a tuner after installing this kit?\u003c\/p\u003e\n\u003cp style=\"margin:0;line-height:1.6;\"\u003eYes, installing a performance engine kit like this will require a proper dyno tune to optimize fuel delivery and ignition timing for the increased displacement and cam profile.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin:0 0 12px;\"\u003e\n\u003cp style=\"margin:0 0 3px;font-weight:600;\"\u003eWhat Harley-Davidson models does this Power Pack fit?\u003c\/p\u003e\n\u003cp style=\"margin:0;line-height:1.6;\"\u003eThis kit fits a range of Harley-Davidson models including Touring, Softail, and Dyna platforms. Always verify your specific engine family and year with S\u0026amp;S Cycle to ensure compatibility.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"vt-confidence\" style=\"border-top:1px solid #e5e5e5;margin:24px 0 0;padding:16px 0 0;font-size:0.92em;line-height:1.6;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;\"\u003eOrdering from Vtwinbikers\u003c\/h3\u003e\n\u003cul style=\"padding-left:20px;margin:0;\"\u003e\n\u003cli\u003eBrand new, sourced through authorized US distribution — never used, never grey-market.\u003c\/li\u003e\n\u003cli\u003eNot sure it fits? Use \u003cstrong\u003eShop by Bike\u003c\/strong\u003e to filter by your year and model, or email us and we will confirm before you order.\u003c\/li\u003e\n\u003cli\u003eHarley-Davidson and Indian Motorcycle is all we do, so you are talking to people who ride what you ride.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"BreadcrumbList\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/vtwinbikers.com\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Piston Sets - Powersports\",\"item\":\"https:\/\/vtwinbikers.com\/collections\/all\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"S\u0026S Cycle\",\"item\":\"https:\/\/vtwinbikers.com\/collections\/s-s-cycle\"},{\"@type\":\"ListItem\",\"position\":4,\"name\":\"S\u0026S Cycle Power Pack 4.32-inch Big Bore Engine Kit - Harley-Davidson Touring, Softail, Dyna\",\"item\":\"https:\/\/vtwinbikers.com\/products\/s-s-cycle-power-packs-harley-davidson-10\"}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Do I need to have my engine machine work done, or is this bolt-on?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"S\u0026S Power Packs are designed as complete bolt-on kits. Most installations do not require extensive machine work if you're upgrading existing cylinders and heads.\"}},{\"@type\":\"Question\",\"name\":\"Will I need a tuner after installing this kit?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes, installing a performance engine kit like this will require a proper dyno tune to optimize fuel delivery and ignition timing for the increased displacement and cam profile.\"}},{\"@type\":\"Question\",\"name\":\"What Harley-Davidson models does this Power Pack fit?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"This kit fits a range of Harley-Davidson models including Touring, Softail, and Dyna platforms. Always verify your specific engine family and year with S\u0026S Cycle to ensure compatibility.\"}}]}\u003c\/script\u003e\n\u003c!-- vt:seo-end --\u003e","brand":"S\u0026S Cycle","offers":[{"title":"Default Title","offer_id":53040420290671,"sku":"T14-1020382","price":3497.95,"currency_code":"USD","in_stock":false}],"url":"https:\/\/vtwinbikers.com\/products\/s-s-cycle-power-packs-harley-davidson-10","provider":"Vtwinbikers","version":"1.0","type":"link"}