{"product_id":"s-s-cycle-power-packs-harley-davidson-21","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 kit designed to deliver reliable high-horsepower builds for your Harley-Davidson. It combines 4.32-inch big-bore cylinders with a matched cam, cam plate, oil pump, and all supporting components, making it a bolt-on solution that eliminates the guesswork of sourcing compatible top-end 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;\"\u003eComplete big-bore engine upgrade kit\u003c\/li\u003e\n\u003cli style=\"margin:3px 0;\"\u003e4.32-inch big-bore cylinders\u003c\/li\u003e\n\u003cli style=\"margin:3px 0;\"\u003eMatched high-performance cam and cam plate\u003c\/li\u003e\n\u003cli style=\"margin:3px 0;\"\u003eOEM-spec oil pump included\u003c\/li\u003e\n\u003cli style=\"margin:3px 0;\"\u003eAll required cam chest components\u003c\/li\u003e\n\u003cli style=\"margin:3px 0;\"\u003eBolt-on design for simplified installation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis integrated system ensures that all critical engine components work in harmony, providing a robust foundation for serious performance gains. Riders looking for a straightforward path to increased displacement and power will find this kit an excellent choice for their V-twin.\u003c\/p\u003e\u003ch3\u003eOptimized for Power and Compatibility\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eFeatures durable 4.32-inch big-bore cylinders\u003c\/li\u003e\n\u003cli\u003eIncludes a matched high-performance cam and cam plate\u003c\/li\u003e\n\u003cli\u003eComes with an OEM-spec oil pump for consistent lubrication\u003c\/li\u003e\n\u003cli\u003eAll necessary cam chest components are included for a complete installation\u003c\/li\u003e\n\u003cli\u003eDesigned as a complete kit to ensure component compatibility and performance\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSeamless Engine Upgrade\u003c\/h3\u003e\u003cp\u003eUpgrading your Harley's engine can be complex, but the S\u0026amp;S Cycle Power Package simplifies the process by providing a pre-engineered solution. This kit is ideal for riders wanting to upgrade their Touring, Softail, or Dyna without the hassle of piecing together individual parts. Just ensure your motorcycle's engine displacement and year are compatible before starting your build.\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 310-1107D\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 components are included in this S\u0026amp;S Power Package?\u003c\/p\u003e\n\u003cp style=\"margin:0;line-height:1.6;\"\u003eThis kit typically includes cylinders, pistons, rings, a matched cam, cam plate, oil pump, and all necessary gaskets and hardware for installation.\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;\"\u003eIs a fuel tune required after installing this kit?\u003c\/p\u003e\n\u003cp style=\"margin:0;line-height:1.6;\"\u003eYes, a fuel tuner or ECM recalibration is strongly recommended to optimize performance and fueling with 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;\"\u003eWill this Power Package fit my Harley-Davidson?\u003c\/p\u003e\n\u003cp style=\"margin:0;line-height:1.6;\"\u003eThis kit is designed for various Harley-Davidson engines. It is essential to verify specific engine displacement and year compatibility with S\u0026amp;S Cycle or a qualified builder before ordering.\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-21\"}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"What components are included in this S\u0026S Power Package?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"This kit typically includes cylinders, pistons, rings, a matched cam, cam plate, oil pump, and all necessary gaskets and hardware for installation.\"}},{\"@type\":\"Question\",\"name\":\"Is a fuel tune required after installing this kit?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes, a fuel tuner or ECM recalibration is strongly recommended to optimize performance and fueling with the increased displacement and cam profile.\"}},{\"@type\":\"Question\",\"name\":\"Will this Power Package fit my Harley-Davidson?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"This kit is designed for various Harley-Davidson engines. It is essential to verify specific engine displacement and year compatibility with S\u0026S Cycle or a qualified builder before ordering.\"}}]}\u003c\/script\u003e\n\u003c!-- vt:seo-end --\u003e","brand":"S\u0026S Cycle","offers":[{"title":"Default Title","offer_id":53040426287215,"sku":"T14-1020329","price":3294.95,"currency_code":"USD","in_stock":false}],"url":"https:\/\/vtwinbikers.com\/products\/s-s-cycle-power-packs-harley-davidson-21","provider":"Vtwinbikers","version":"1.0","type":"link"}