{"product_id":"s-s-cycle-engines-harley-davidson-softail-models-1","title":"S\u0026S Cycle Engines — Harley-Davidson Softail Heritage Classic, Softail Fat Boy, Softail (1983-2026)","description":"\u003cp\u003eS\u0026amp;S Cycle MK136B is a 136-cubic-inch complete crate engine for 2018-2024 Harley-Davidson Softail models, built on MKB-series crankcases with high-flow cylinder heads and premium valvetrain components. Ready to bolt into your M8 Softail frame as a direct replacement for maximum displacement and reliability.\u003c\/p\u003e\n\u003ch2\u003eFeatures\u003c\/h2\u003e\n\u003cul\u003e\n  \u003cli\u003e136 cubic inches displacement\u003c\/li\u003e\n  \u003cli\u003eHigh-flow cylinder heads with premium seats and guides\u003c\/li\u003e\n  \u003cli\u003e+1mm intake and exhaust valves\u003c\/li\u003e\n  \u003cli\u003e.605\" max lift valve springs\u003c\/li\u003e\n  \u003cli\u003eValves .030\" longer than stock for improved geometry\u003c\/li\u003e\n  \u003cli\u003eBillet aluminum covers\u003c\/li\u003e\n  \u003cli\u003eHigh-strength alloy cylinder head casting\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 310-1296\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDisplacement:\u003c\/strong\u003e 136 cubic inches\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCategory:\u003c\/strong\u003e Engine Components \/ Engines\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eWeight:\u003c\/strong\u003e 135 lb\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eFitment\u003c\/h2\u003e\n\u003cp\u003eFits 2018-2024 Harley-Davidson Softail models with Milwaukee-Eight (M8) mounting points.\u003c\/p\u003e\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003ch3\u003eWill this engine fit my Softail?\u003c\/h3\u003e\n\u003cp\u003eYes — fits all 2018-2024 Harley-Davidson Softail models as a direct M8 engine swap.\u003c\/p\u003e\n\u003ch3\u003eWhat's included in the crate engine?\u003c\/h3\u003e\n\u003cp\u003eComplete assembled engine with high-flow heads, premium valvetrain, and sprocket shaft spacer. Ready to install into your frame.\u003c\/p\u003e\n\u003ch3\u003eDoes this require custom tuning?\u003c\/h3\u003e\n\u003cp\u003eA professional fuel mapping and tune is recommended to optimize performance with the larger displacement and high-flow heads.\u003c\/p\u003e\n\u003ch3\u003eHow much horsepower does the MK136B make?\u003c\/h3\u003e\n\u003cp\u003eHorsepower varies by tune and fuel octane. Contact S\u0026amp;S Cycle or your installer for certified dyno results.\u003c\/p\u003e\n\u003ch3\u003eIs this covered by warranty?\u003c\/h3\u003e\n\u003cp\u003eS\u0026amp;S Cycle offers limited warranty on crate engines. Check the warranty terms with your dealer or S\u0026amp;S directly.\u003c\/p\u003e","brand":"S\u0026S Cycle","offers":[{"title":"Default Title","offer_id":53040432906351,"sku":"T14-887237","price":42385000.0,"currency_code":"COP","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0608\/6734\/6543\/files\/output_743a0e51-af82-40c0-a768-d41ef9f10273.png?v=1779566491","url":"https:\/\/vtwinbikers.com\/en-co\/products\/s-s-cycle-engines-harley-davidson-softail-models-1","provider":"Vtwinbikers","version":"1.0","type":"link"}