{"product_id":"s-s-cycle-power-packs-harley-davidson-48","title":"S\u0026S Cycle Power Packs — Harley-Davidson Electra Glide, Softail Heritage Classic, Electra Glide Classic (1955-2026)","description":"\u003cp\u003eS\u0026amp;S Cycle Power Packs are replacement piston sets for Harley-Davidson big-twin and Sportster engines, engineered to increase displacement and compression for added horsepower and torque output. Direct bolt-in fit for stock or modified engines.\u003c\/p\u003e\n\u003ch2\u003eFeatures\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003eIncreased displacement over stock pistons\u003c\/li\u003e\n  \u003cli\u003eS\u0026amp;S Cycle precision engineering\u003c\/li\u003e\n  \u003cli\u003eDirect replacement fitment\u003c\/li\u003e\n  \u003cli\u003eHigher compression ratio\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecifications\u003c\/h2\u003e\n\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 310-1057D\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\u003ch2\u003eFitment\u003c\/h2\u003e\n\u003cp\u003eFits Harley-Davidson big-twin and Sportster engines. Verify engine year and displacement with S\u0026amp;S Cycle before ordering to ensure correct piston size and pin diameter for your build.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eWill these pistons fit my stock Harley engine?\u003c\/h3\u003e\n\u003cp\u003ePower Packs are engineered as direct replacements for Harley big-twin and Sportster platforms, but confirm your engine year and displacement with S\u0026amp;S before purchase.\u003c\/p\u003e\n\u003ch3\u003eDo I need a complete rebuild to install these?\u003c\/h3\u003e\n\u003cp\u003ePiston installation requires engine disassembly and typically includes replacing rings and checking clearances. A qualified machine shop or engine builder is strongly recommended.\u003c\/p\u003e\n\u003ch3\u003eWhat kind of power gains can I expect?\u003c\/h3\u003e\n\u003cp\u003eHorsepower and torque gains depend on displacement increase, compression ratio, and engine tuning. S\u0026amp;S provides flow specs — dyno results vary by bike and setup.\u003c\/p\u003e\n\u003ch3\u003eAre these street-legal?\u003c\/h3\u003e\n\u003cp\u003ePistons themselves are components. Legality depends on local emissions laws and whether the complete engine build meets your jurisdiction's requirements.\u003c\/p\u003e","brand":"S\u0026S Cycle","offers":[{"title":"Default Title","offer_id":53040433463407,"sku":"T14-1020359","price":3294.95,"currency_code":"USD","in_stock":false}],"url":"https:\/\/vtwinbikers.com\/products\/s-s-cycle-power-packs-harley-davidson-48","provider":"Vtwinbikers","version":"1.0","type":"link"}