{"product_id":"s-s-cycle-power-packs-harley-davidson-31","title":"S\u0026S Cycle 4.32-inch Big Bore Power Package - Harley Touring, Softail \u0026 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;\"\u003eThe S\u0026amp;S Cycle Power Package is a complete big-bore engine kit designed to deliver reliable high horsepower gains. It combines 4.32-inch cylinders with a matched cam, cam plate, oil pump, and supporting components. This all-in-one solution is perfect for riders looking to upgrade engine performance without the complexity of sourcing individual parts.\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;\"\u003eIncrease displacement with 4.32-inch big-bore cylinders\u003c\/li\u003e\n\u003cli style=\"margin:3px 0;\"\u003eExperience optimized power with matched cam and cam plate\u003c\/li\u003e\n\u003cli style=\"margin:3px 0;\"\u003eEnsure engine health with integrated oil pump and cam chest\u003c\/li\u003e\n\u003cli style=\"margin:3px 0;\"\u003eSimplify upgrades with a complete, all-in-one kit\u003c\/li\u003e\n\u003cli style=\"margin:3px 0;\"\u003eAchieve reliable high horsepower gains\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eWhen you're chasing serious power from your Harley-Davidson, the S\u0026amp;S Cycle Power Package provides a robust foundation. This comprehensive kit ensures that all critical engine components are perfectly matched, leading to a cohesive and reliable performance upgrade. Riders seeking a significant boost in displacement and horsepower will appreciate the integrated design and engineering behind this package.\u003c\/p\u003e\u003ch3\u003eIntegrated Design for Peak Performance\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eFeatures 4.32-inch big-bore cylinders for a substantial increase in engine displacement\u003c\/li\u003e\n\u003cli\u003eIncludes a matched high-performance cam and cam plate for optimized power delivery\u003c\/li\u003e\n\u003cli\u003eIntegrated oil pump and cam chest components ensure a complete system upgrade\u003c\/li\u003e\n\u003cli\u003eComplete kit reduces the need for sourcing multiple parts individually\u003c\/li\u003e\n\u003cli\u003eDesigned to deliver reliable high horsepower gains for your V-twin\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eThe Path to More Power\u003c\/h3\u003e\u003cp\u003eUpgrading to an S\u0026amp;S Cycle Power Package is a major step in transforming your Harley's engine. While the kit provides everything needed for the core engine components, proper installation and a custom dyno tune are essential to maximize performance and ensure long-term reliability. We recommend having this kit installed by a qualified Harley-Davidson performance shop.\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 310-1109D\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;\"\u003eWhat engine platform does this Power Package fit?\u003c\/p\u003e\n\u003cp style=\"margin:0;line-height:1.6;\"\u003eS\u0026amp;S makes Power Packages for multiple Harley platforms. Please use our Shop by Bike tool or consult S\u0026amp;S documentation to confirm the specific year and engine (Evolution, Twin Cam, Milwaukee-Eight) before purchase.\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's included in the S\u0026amp;S Cycle Power Package kit?\u003c\/p\u003e\n\u003cp style=\"margin:0;line-height:1.6;\"\u003eThe kit includes cylinders, pistons, a matched cam, cam plate, oil pump, and necessary gaskets and hardware for a complete engine upgrade.\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 dyno tune after installing this kit?\u003c\/p\u003e\n\u003cp style=\"margin:0;line-height:1.6;\"\u003eYes, installing a Power Package fundamentally changes your engine's characteristics. A professional dyno tune is absolutely necessary to optimize fuel delivery and ignition timing for the new components.\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 4.32-inch Big Bore Power Package - Harley Touring, Softail \u0026 Dyna\",\"item\":\"https:\/\/vtwinbikers.com\/products\/s-s-cycle-power-packs-harley-davidson-31\"}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"What engine platform does this Power Package fit?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"S\u0026S makes Power Packages for multiple Harley platforms. Please use our Shop by Bike tool or consult S\u0026S documentation to confirm the specific year and engine (Evolution, Twin Cam, Milwaukee-Eight) before purchase.\"}},{\"@type\":\"Question\",\"name\":\"What's included in the S\u0026S Cycle Power Package kit?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The kit includes cylinders, pistons, a matched cam, cam plate, oil pump, and necessary gaskets and hardware for a complete engine upgrade.\"}},{\"@type\":\"Question\",\"name\":\"Will I need a dyno tune after installing this kit?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes, installing a Power Package fundamentally changes your engine's characteristics. A professional dyno tune is absolutely necessary to optimize fuel delivery and ignition timing for the new components.\"}}]}\u003c\/script\u003e\n\u003c!-- vt:seo-end --\u003e","brand":"S\u0026S Cycle","offers":[{"title":"Default Title","offer_id":53040426975343,"sku":"T14-1020357","price":3294.95,"currency_code":"USD","in_stock":false}],"url":"https:\/\/vtwinbikers.com\/products\/s-s-cycle-power-packs-harley-davidson-31","provider":"Vtwinbikers","version":"1.0","type":"link"}