{"product_id":"cvo-121-high-output-engine","title":"2025 CVO 121 High Output Engine (NEW TAKE OFF)","description":"\u003cp\u003eCVO Milwaukee-Eight 121 High Output Engine Harley-Davidson 1977cc V-Twin \u003cbr\u003eCondition: New – Open box\u003cbr\u003eBrand: Harley-Davidson\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cstrong\u003eItem Specifics\u003c\/strong\u003e\u003cbr\u003e•    Brand: Harley-Davidson\u003cbr\u003e•    Manufacturer Part Number: (enter)\u003cbr\u003e•    Engine Size: 121 cu in \/ 1,977 cc\u003cbr\u003e•    Engine Type: V-Twin\u003cbr\u003e•    Horsepower: 127 HP @ 4,900 rpm\u003cbr\u003e•    Torque: 145 ft-lb @ 4,000 rpm\u003cbr\u003e•    Compression Ratio: 11.4:1\u003cbr\u003e•    Valvetrain: 4 valves per cylinder, hydraulic self-adjusting lifters\u003cbr\u003e•    Intake: Heavy Breather high-flow\u003cbr\u003e•    Fits: CVO Road Glide ST, CVO Street Glide ST\u003cbr\u003e•    Country\/Region of Manufacture: United States\u003cbr\u003e\u003cbr\u003e\u003cbr\u003eCVO™ Milwaukee-Eight® 121 High Output Engine\u003cbr\u003eThe performance heart of the Harley-Davidson CVO ST lineup. The Milwaukee-Eight 121 High Output is engineered for harder pulls, stronger upper-rpm performance, and aggressive throttle response in a factory-built bagger. High Output tuning paired with a performance intake delivers more peak power than the standard 121 platform — a V-twin that revs higher and hits harder with every twist of the throttle.\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cstrong\u003eKey Specs\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003e•    Displacement: 1,977 cc (121 cu in)\u003cbr\u003e•    Horsepower: 127 HP @ 4,900 rpm\u003cbr\u003e•    Torque: 145 ft-lb @ 4,000 rpm\u003cbr\u003e•    Compression: 11.4:1\u003cbr\u003e•    Redline: ~5,900 rpm\u003cbr\u003e•    Valvetrain: 4 valves per cylinder, hydraulic self-adjusting lifters\u003cbr\u003e•    Intake: Heavy Breather high-flow intake\u003cbr\u003e•    Application: CVO Road Glide ST \/ CVO Street Glide ST\u003c\/p\u003e\n\u003cp\u003e\u003cbr\u003e\u003cstrong\u003eWhat’s Included\u003c\/strong\u003e\u003cbr\u003e•    1x CVO Milwaukee-Eight 121 High Output engine assembly\u003cbr\u003e•    (list any included accessories, harnesses, ECM, intake, etc.)\u003c\/p\u003e\n\u003cdiv data-copy-service-computed-style='font-family: \"Google Sans\", Roboto, Arial, sans-serif; font-size: 20px; font-weight: 600; margin: 24px 0px 12px; text-decoration: none; border-bottom: 0px rgb(0, 29, 53);' data-sfc-cb=\"\" data-sfc-root=\"ep\" data-sfc-cp=\"\" data-animation-nesting=\"\" role=\"heading\" aria-level=\"3\" class=\"otQkpb\"\u003e\n\u003cdiv data-copy-service-computed-style='font-family: \"Google Sans\", Roboto, Arial, sans-serif; font-size: 16px; font-weight: 400; margin: 0px; text-decoration: none; border-bottom: 0px rgb(10, 10, 10);' data-ved=\"2ahUKEwjzrvac_NeVAxULnCYFHSDRNiUQi4wTegoIAggACAAIGRAX\" class=\"\" data-bfc=\"\"\u003e\n\u003cspan data-copy-service-computed-style='font-family: \"Google Sans\", Roboto, Arial, sans-serif; font-size: 16px; font-weight: 400; margin: 0px; text-decoration: none; border-bottom: 0px rgb(10, 10, 10);' data-sfc-cb=\"\" data-sfc-root=\"ep\" data-sfc-cp=\"\" class=\"T286Pc\"\u003e\u003c\/span\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003cdiv data-copy-service-computed-style='font-family: \"Google Sans\", Roboto, Arial, sans-serif; font-size: 16px; font-weight: 400; margin: 0px; text-decoration: none; border-bottom: 0px rgb(10, 10, 10);' data-ved=\"2ahUKEwjzrvac_NeVAxULnCYFHSDRNiUQi4wTegoIAggACAAIGRAX\" class=\"\" data-bfc=\"\"\u003e\u003cspan data-copy-service-computed-style='font-family: \"Google Sans\", Roboto, Arial, sans-serif; font-size: 16px; font-weight: 400; margin: 0px; text-decoration: none; border-bottom: 0px rgb(10, 10, 10);' data-sfc-cb=\"\" data-sfc-root=\"ep\" data-sfc-cp=\"\" class=\"T286Pc\"\u003eThis new engine came out of a 2026 CVO Road Glide ST that we engine swapped a 135 Crate engine into. \u003c\/span\u003e\u003c\/div\u003e\n\u003cdiv data-copy-service-computed-style='font-family: \"Google Sans\", Roboto, Arial, sans-serif; font-size: 16px; font-weight: 400; margin: 0px; text-decoration: none; border-bottom: 0px rgb(10, 10, 10);' data-ved=\"2ahUKEwjzrvac_NeVAxULnCYFHSDRNiUQi4wTegoIAggACAAIGRAX\" class=\"\" data-bfc=\"\"\u003e\n\u003cspan data-copy-service-computed-style='font-family: \"Google Sans\", Roboto, Arial, sans-serif; font-size: 16px; font-weight: 400; margin: 0px; text-decoration: none; border-bottom: 0px rgb(10, 10, 10);' data-sfc-cb=\"\" data-sfc-root=\"ep\" data-sfc-cp=\"\" class=\"T286Pc\"\u003e\u003c\/span\u003e\u003cbr\u003e\n\u003c\/div\u003e\n\u003cdiv data-copy-service-computed-style='font-family: \"Google Sans\", Roboto, Arial, sans-serif; font-size: 16px; font-weight: 400; margin: 0px; text-decoration: none; border-bottom: 0px rgb(10, 10, 10);' data-ved=\"2ahUKEwjzrvac_NeVAxULnCYFHSDRNiUQi4wTegoIAggACAAIGRAX\" class=\"\" data-bfc=\"\"\u003e\u003cspan data-copy-service-computed-style='font-family: \"Google Sans\", Roboto, Arial, sans-serif; font-size: 16px; font-weight: 400; margin: 0px; text-decoration: none; border-bottom: 0px rgb(10, 10, 10);' data-sfc-cb=\"\" data-sfc-root=\"ep\" data-sfc-cp=\"\" class=\"T286Pc\"\u003e\u003cstrong\u003eFREE\u003c\/strong\u003e Shipping within the continental US! \u003c\/span\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"REPUBLIC HARLEY-DAVIDSON","offers":[{"title":"Default Title","offer_id":42523848245294,"sku":null,"price":7381.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0594\/4544\/4654\/files\/CVO121engine3.png?v=1784231598","url":"https:\/\/republic-harley-davidson-2.myshopify.com\/products\/cvo-121-high-output-engine","provider":"REPUBLIC HARLEY-DAVIDSON","version":"1.0","type":"link"}