{"product_id":"twin-power-17-up-m8-black-4-25-inch-big-bore-cylinders-pair","title":"Twin Power 17-Up M8 Black 4.25 Inch Big Bore Cylinders Pair","description":"High-quality cast Big Bore Cylinders from Twin Power™. Factory style black textured powdercoat finish with highlighted fins. Cast in iron liners for strength and durability and finish honed and ready to run.\n\u003cul\u003e\n  \u003cli\u003eDirect bolt-on, requires no machine work to crankcases or cylinder heads\u003c\/li\u003e\n  \u003cli\u003eIncreases 107 in. engines to 124 in. and 114 in. engines to 128 in.\u003c\/li\u003e\n  \u003cli\u003eIncludes cylinder head dowels\u003c\/li\u003e\n  \u003cli\u003eSold in pairs\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eUpgrade your Milwaukee-Eight engine with Twin Power Big Bore Cylinders, part number twp486959. Designed as a direct bolt-on replacement, these high-quality cast cylinders increase 107-cubic-inch engines to 124 cubic inches and 114-cubic-inch engines to 128 cubic inches without requiring machining to the crankcases or cylinder heads. The cylinders are finished in a factory-style black textured powder coat with highlighted cooling fins for a clean, performance-focused appearance.\u003cbr\u003eBuilt with cast-in iron liners, these cylinders provide strength and durability for demanding powersports applications. Each cylinder is finish honed and ready to run, helping simplify installation and reduce preparation time. Cylinder head dowels are included to support proper fitment during assembly, and the set is sold in pairs for a complete engine upgrade. This Twin Power kit is intended for select 2017 and newer Harley-Davidson Milwaukee-Eight applications.\u003cbr\u003eFitment includes the 2017 Harley-Davidson FLHR Road King, FLHX Street Glide, FLTRX Road Glide, FLHXS Street Glide Special, FLTRXS Road Glide Special, FLHTCU Electra Glide Ultra Classic, FLTRU Road Glide Ultra, FLHTK Ultra Limited, and FLHTKL Ultra Limited Low, as well as the 2018 Harley-Davidson FLHR Road King. Verify your motorcycle model, engine configuration, and installation requirements before ordering. Professional installation is recommended for engine performance components.\u003c\/p\u003e\u003cp\u003e\u003cb\u003eFeatures:\u003c\/b\u003e\u003c\/p\u003e\u003cul\u003e\u003cli\u003eDirect bolt-on design: Installs without machining the crankcases or cylinder heads\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eEngine displacement upgrade: Converts 107-cubic-inch engines to 124 cubic inches and 114-cubic-inch engines to 128 cubic inches\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eDurable construction: Cast-in iron liners provide strength and long-term durability\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eReady to run: Finish honed for simplified installation\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eFactory-style finish: Black textured powder coat with highlighted cooling fins\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eComplete set: Includes cylinder head dowels and is sold in pairs\u003c\/li\u003e\u003c\/ul\u003e\u003cul\u003e\u003cli\u003eApplication: Designed for select 2017 and newer Harley-Davidson Milwaukee-Eight models\u003c\/li\u003e\u003c\/ul\u003e\u003cbr\u003e\nFitment:\u003cbr\u003e\nHarley Davidson FLDE Deluxe 107 Base 2018\u003cbr\u003e\nHarley Davidson FLDE Deluxe 107 Base 2019\u003cbr\u003e\nHarley Davidson FLDE Deluxe 107 Base 2020\u003cbr\u003e\nHarley Davidson FLFB Fat Boy 107 Base 2018\u003cbr\u003e\nHarley Davidson FLFB Fat Boy 107 Base 2019\u003cbr\u003e\nHarley Davidson FLFBS Fat Boy 114 Base 2018\u003cbr\u003e\nHarley Davidson FLFBS Fat Boy 114 Base 2019\u003cbr\u003e\nHarley Davidson FLFBS Fat Boy 114 Base 2020\u003cbr\u003e\nHarley Davidson FLFBS Fat Boy 114 Base 2021\u003cbr\u003e\nHarley Davidson FLH Electra Glide Revival Base 2021\u003cbr\u003e\nHarley Davidson FLHC Heritage Classic 107 Base 2018\u003cbr\u003e\nHarley Davidson FLHC Heritage Classic 107 Base 2019\u003cbr\u003e\nHarley Davidson FLHC Heritage Classic 107 Base 2020\u003cbr\u003e\nHarley Davidson FLHC Heritage Classic 107 Base 2021\u003cbr\u003e\nHarley Davidson FLHCS Heritage Classic 114 Base 2018\u003cbr\u003e\nHarley Davidson FLHCS Heritage Classic 114 Base 2019\u003cbr\u003e\nHarley Davidson FLHCS Heritage Classic 114 Base 2020\u003cbr\u003e\nHarley Davidson FLHCS Heritage Classic 114 Base 2021\u003cbr\u003e\nHarley Davidson FLHR Road King Base 2017\u003cbr\u003e\nHarley Davidson FLHR Road King Base 2018\u003cbr\u003e\nHarley Davidson FLHR Road King Base 2019\u003cbr\u003e\nHarley Davidson FLHR Road King Base 2020\u003cbr\u003e\nHarley Davidson FLHR Road King Base 2021\u003cbr\u003e\nHarley Davidson FLHRXS Road King Special Base 2017\u003cbr\u003e\nHarley Davidson FLHRXS Road King Special Base 2018\u003cbr\u003e\nHarley Davidson FLHRXS Road King Special Base 2019\u003cbr\u003e\nHarley Davidson FLHRXS Road King Special Base 2020\u003cbr\u003e\nHarley Davidson FLHRXS Road King Special Base 2021\u003cbr\u003e\nHarley Davidson FLHT Electra Glide Standard Base 2019\u003cbr\u003e\nHarley Davidson FLHT Electra Glide Standard Base 2020\u003cbr\u003e\nHarley Davidson FLHT Electra Glide Standard Base 2021\u003cbr\u003e\nHarley Davidson FLHTCU Electra Glide Ultra Classic Base 2017\u003cbr\u003e\nHarley Davidson FLHTCU Electra Glide Ultra Classic Base 2018\u003cbr\u003e\nHarley Davidson FLHTCU Electra Glide Ultra Classic Base 2019\u003cbr\u003e\nHarley Davidson FLHTCUTG Tri Glide Ultra Base 2017\u003cbr\u003e\nHarley Davidson FLHTCUTG Tri Glide Ultra Base 2018\u003cbr\u003e\nHarley Davidson FLHTCUTG Tri Glide Ultra Base 2019\u003cbr\u003e\nHarley Davidson FLHTCUTG Tri Glide Ultra Base 2020\u003cbr\u003e\nHarley Davidson FLHTCUTG Tri Glide Ultra Base 2021\u003cbr\u003e\nHarley Davidson FLHTCUTGSE CVO Tri Glide Base 2020\u003cbr\u003e\nHarley Davidson FLHTCUTGSE CVO Tri Glide Base 2021\u003cbr\u003e\nHarley Davidson FLHTK Ultra Limited Base 2017\u003cbr\u003e\nHarley Davidson FLHTK Ultra Limited Base 2018\u003cbr\u003e\nHarley Davidson FLHTK Ultra Limited Base 2019\u003cbr\u003e\nHarley Davidson FLHTK Ultra Limited Base 2020\u003cbr\u003e\nHarley Davidson FLHTK Ultra Limited Base 2021\u003cbr\u003e\nHarley Davidson FLHTKL Ultra Limited Low Base 2017\u003cbr\u003e\nHarley Davidson FLHTKL Ultra Limited Low Base 2018\u003cbr\u003e\nHarley Davidson FLHTKL Ultra Limited Low Base 2019\u003cbr\u003e\nHarley Davidson FLHTKSE CVO Limited Base 2017\u003cbr\u003e\nHarley Davidson FLHTKSE CVO Limited Base 2018\u003cbr\u003e\nHarley Davidson FLHTKSE CVO Limited Base 2019\u003cbr\u003e\nHarley Davidson FLHTKSE CVO Limited Base 2020\u003cbr\u003e\nHarley Davidson FLHTKSE CVO Limited Base 2021\u003cbr\u003e\nHarley Davidson FLHX Street Glide Base 2017\u003cbr\u003e\nHarley Davidson FLHX Street Glide Base 2018\u003cbr\u003e\nHarley Davidson FLHX Street Glide Base 2019\u003cbr\u003e\nHarley Davidson FLHX Street Glide Base 2020\u003cbr\u003e\nHarley Davidson FLHX Street Glide Base 2021\u003cbr\u003e\nHarley Davidson FLHXS Street Glide Special Base 2017\u003cbr\u003e\nHarley Davidson FLHXS Street Glide Special Base 2018\u003cbr\u003e\nHarley Davidson FLHXS Street Glide Special Base 2019\u003cbr\u003e\nHarley Davidson FLHXS Street Glide Special Base 2020\u003cbr\u003e\nHarley Davidson FLHXS Street Glide Special Base 2021\u003cbr\u003e\nHarley Davidson FLHXSE CVO Street Glide Base 2017\u003cbr\u003e\nHarley Davidson FLHXSE CVO Street Glide Base 2018\u003cbr\u003e\nHarley Davidson FLHXSE CVO Street Glide Base 2019\u003cbr\u003e\nHarley Davidson FLHXSE CVO Street Glide Base 2020\u003cbr\u003e\nHarley Davidson FLHXSE CVO Street Glide Base 2021\u003cbr\u003e\nHarley Davidson FLRT Freewheeler Base 2017\u003cbr\u003e\nHarley Davidson FLRT Freewheeler Base 2018\u003cbr\u003e\nHarley Davidson FLRT Freewheeler Base 2019\u003cbr\u003e\nHarley Davidson FLRT Freewheeler Base 2020\u003cbr\u003e\nHarley Davidson FLRT Freewheeler Base 2021\u003cbr\u003e\nHarley Davidson FLSB Sport Glide 107 Base 2018\u003cbr\u003e\nHarley Davidson FLSB Sport Glide 107 Base 2019\u003cbr\u003e\nHarley Davidson FLSB Sport Glide 107 Base 2020\u003cbr\u003e\nHarley Davidson FLSB Sport Glide 107 Base 2021\u003cbr\u003e\nHarley Davidson FLSL Softail Slim 107 Base 2018\u003cbr\u003e\nHarley Davidson FLSL Softail Slim 107 Base 2019\u003cbr\u003e\nHarley Davidson FLSL Softail Slim 107 Base 2020\u003cbr\u003e\nHarley Davidson FLSL Softail Slim 107 Base 2021\u003cbr\u003e\nHarley Davidson FLTRK Road Glide Limited Base 2020\u003cbr\u003e\nHarley Davidson FLTRK Road Glide Limited Base 2021\u003cbr\u003e\nHarley Davidson FLTRU Road Glide Ultra Base 2017\u003cbr\u003e\nHarley Davidson FLTRU Road Glide Ultra Base 2018\u003cbr\u003e\nHarley Davidson FLTRU Road Glide Ultra Base 2019\u003cbr\u003e\nHarley Davidson FLTRX Road Glide Base 2017\u003cbr\u003e\nHarley Davidson FLTRX Road Glide Base 2018\u003cbr\u003e\nHarley Davidson FLTRX Road Glide Base 2019\u003cbr\u003e\nHarley Davidson FLTRX Road Glide Base 2020\u003cbr\u003e\nHarley Davidson FLTRX Road Glide Base 2021\u003cbr\u003e\nHarley Davidson FLTRXS Road Glide Special Base 2017\u003cbr\u003e\nHarley Davidson FLTRXS Road Glide Special Base 2018\u003cbr\u003e\nHarley Davidson FLTRXS Road Glide Special Base 2019\u003cbr\u003e\nHarley Davidson FLTRXS Road Glide Special Base 2020\u003cbr\u003e\nHarley Davidson FLTRXS Road Glide Special Base 2021\u003cbr\u003e\nHarley Davidson FLTRXSE CVO Road Glide Base 2018\u003cbr\u003e\nHarley Davidson FLTRXSE CVO Road Glide Base 2019\u003cbr\u003e\nHarley Davidson FLTRXSE CVO Road Glide Base 2020\u003cbr\u003e\nHarley Davidson FLTRXSE CVO Road Glide Base 2021\u003cbr\u003e\nHarley Davidson FXBB Street Bob 107 Base 2018\u003cbr\u003e\nHarley Davidson FXBB Street Bob 107 Base 2019\u003cbr\u003e\nHarley Davidson FXBB Street Bob 107 Base 2020\u003cbr\u003e\nHarley Davidson FXBBS Street Bob 114 Base 2021\u003cbr\u003e\nHarley Davidson FXBR Breakout 107 Base 2018\u003cbr\u003e\nHarley Davidson FXBR Breakout 107 Base 2019\u003cbr\u003e\nHarley Davidson FXBRS Breakout 114 Base 2018\u003cbr\u003e\nHarley Davidson FXBRS Breakout 114 Base 2019\u003cbr\u003e\nHarley Davidson FXBRS Breakout 114 Base 2020\u003cbr\u003e\nHarley Davidson FXDRS FXDR 114 Base 2019\u003cbr\u003e\nHarley Davidson FXDRS FXDR 114 Base 2020\u003cbr\u003e\nHarley Davidson FXFB Fat Bob 107 Base 2018\u003cbr\u003e\nHarley Davidson FXFB Fat Bob 107 Base 2019\u003cbr\u003e\nHarley Davidson FXFBS Fat Bob 114 Base 2018\u003cbr\u003e\nHarley Davidson FXFBS Fat Bob 114 Base 2019\u003cbr\u003e\nHarley Davidson FXFBS Fat Bob 114 Base 2020\u003cbr\u003e\nHarley Davidson FXFBS Fat Bob 114 Base 2021\u003cbr\u003e\nHarley Davidson FXLR Low Rider 107 Base 2018\u003cbr\u003e\nHarley Davidson FXLR Low Rider 107 Base 2019\u003cbr\u003e\nHarley Davidson FXLR Low Rider 107 Base 2020\u003cbr\u003e\nHarley Davidson FXLRS Low Rider S 114 Base 2020\u003cbr\u003e\nHarley Davidson FXLRS Low Rider S 114 Base 2021\u003cbr\u003e\nHarley Davidson FXST Softail Standard 107 Base 2020\u003cbr\u003e\nHarley Davidson FXST Softail Standard 107 Base 2021\u003cbr\u003e\nHarley-Davidson FLFBS Fat Boy 114 Base 2022\u003cbr\u003e\nHarley-Davidson FLFBS Fat Boy 114 Base 2023\u003cbr\u003e\nHarley-Davidson FLFBS Fat Boy 114 Base 2024\u003cbr\u003e\nHarley-Davidson FLHC Heritage Classic 117 Base 2025\u003cbr\u003e\nHarley-Davidson FLHCS Heritage Classic 114 Base 2022\u003cbr\u003e\nHarley-Davidson FLHCS Heritage Classic 114 Base 2023\u003cbr\u003e\nHarley-Davidson FLHCS Heritage Classic 114 Base 2024\u003cbr\u003e\nHarley-Davidson FLHFB Electra Glide Highway King Base 2023\u003cbr\u003e\nHarley-Davidson FLHR Road King Base 2022\u003cbr\u003e\nHarley-Davidson FLHRXS Road King Special Base 2022\u003cbr\u003e\nHarley-Davidson FLHRXS Road King Special Base 2023\u003cbr\u003e\nHarley-Davidson FLHRXS Road King Special Base 2024\u003cbr\u003e\nHarley-Davidson FLHRXS Road King Special Base 2025\u003cbr\u003e\nHarley-Davidson FLHT Electra Glide Standard Base 2022\u003cbr\u003e\nHarley-Davidson FLHTCUTG Tri Glide Ultra Base 2022\u003cbr\u003e\nHarley-Davidson FLHTCUTG Tri Glide Ultra Base 2023\u003cbr\u003e\nHarley-Davidson FLHTCUTG Tri Glide Ultra Base 2024\u003cbr\u003e\nHarley-Davidson FLHTCUTG Tri Glide Ultra Base 2025\u003cbr\u003e\nHarley-Davidson FLHTCUTG Tri Glide Ultra G.I. Base 2022\u003cbr\u003e\nHarley-Davidson FLHTCUTGSE CVO Tri Glide Base 2022\u003cbr\u003e\nHarley-Davidson FLHTK Ultra Limited Base 2022\u003cbr\u003e\nHarley-Davidson FLHTK Ultra Limited Base 2023\u003cbr\u003e\nHarley-Davidson FLHTK Ultra Limited Base 2024\u003cbr\u003e\nHarley-Davidson FLHX Street Glide Base 2022\u003cbr\u003e\nHarley-Davidson FLHX Street Glide Base 2023\u003cbr\u003e\nHarley-Davidson FLHX Street Glide Base 2024\u003cbr\u003e\nHarley-Davidson FLHX Street Glide Base 2025\u003cbr\u003e\nHarley-Davidson FLHXS Street Glide Special Base 2022\u003cbr\u003e\nHarley-Davidson FLHXS Street Glide Special Base 2023\u003cbr\u003e\nHarley-Davidson FLHXSE CVO Street Glide Base 2022\u003cbr\u003e\nHarley-Davidson FLHXSE CVO Street Glide Base 2023\u003cbr\u003e\nHarley-Davidson FLHXSE CVO Street Glide Base 2024\u003cbr\u003e\nHarley-Davidson FLHXSE CVO Street Glide Base 2025\u003cbr\u003e\nHarley-Davidson FLHXST Street Glide ST Base 2022\u003cbr\u003e\nHarley-Davidson FLHXST Street Glide ST Base 2023\u003cbr\u003e\nHarley-Davidson FLHXU Street Glide Ultra Base 2025\u003cbr\u003e\nHarley-Davidson FLI Hydra-Glide Revival Base 2024\u003cbr\u003e\nHarley-Davidson FLRT Freewheeler Base 2022\u003cbr\u003e\nHarley-Davidson FLRT Freewheeler Base 2023\u003cbr\u003e\nHarley-Davidson FLRT Freewheeler Base 2024\u003cbr\u003e\nHarley-Davidson FLRT Freewheeler Base 2025\u003cbr\u003e\nHarley-Davidson FLSB Sport Glide 107 Base 2022\u003cbr\u003e\nHarley-Davidson FLSB Sport Glide 107 Base 2023\u003cbr\u003e\nHarley-Davidson FLSB Sport Glide 107 Base 2024\u003cbr\u003e\nHarley-Davidson FLSTFI Fat Boy Gray Ghost Base 2025\u003cbr\u003e\nHarley-Davidson FLTRK Road Glide Limited Base 2022\u003cbr\u003e\nHarley-Davidson FLTRK Road Glide Limited Base 2023\u003cbr\u003e\nHarley-Davidson FLTRK Road Glide Limited Base 2024\u003cbr\u003e\nHarley-Davidson FLTRKSE CVO Road Glide Limited Base 2022\u003cbr\u003e\nHarley-Davidson FLTRKSE CVO Road Glide Limited Base 2023\u003cbr\u003e\nHarley-Davidson FLTRT Road Glide 3 Base 2023\u003cbr\u003e\nHarley-Davidson FLTRT Road Glide 3 Base 2024\u003cbr\u003e\nHarley-Davidson FLTRT Road Glide 3 Base 2025\u003cbr\u003e\nHarley-Davidson FLTRX Road Glide Base 2022\u003cbr\u003e\nHarley-Davidson FLTRX Road Glide Base 2023\u003cbr\u003e\nHarley-Davidson FLTRX Road Glide Base 2024\u003cbr\u003e\nHarley-Davidson FLTRX Road Glide Base 2025\u003cbr\u003e\nHarley-Davidson FLTRXRRSE CVO Road Glide RR Base 2025\u003cbr\u003e\nHarley-Davidson FLTRXS Road Glide Special Base 2022\u003cbr\u003e\nHarley-Davidson FLTRXS Road Glide Special Base 2023\u003cbr\u003e\nHarley-Davidson FLTRXSE CVO Road Glide Base 2022\u003cbr\u003e\nHarley-Davidson FLTRXSE CVO Road Glide Base 2023\u003cbr\u003e\nHarley-Davidson FLTRXSE CVO Road Glide Base 2024\u003cbr\u003e\nHarley-Davidson FLTRXSE CVO Road Glide Base 2025\u003cbr\u003e\nHarley-Davidson FLTRXST Road Glide ST Base 2022\u003cbr\u003e\nHarley-Davidson FLTRXST Road Glide ST Base 2023\u003cbr\u003e\nHarley-Davidson FLTRXSTSE CVO Road Glide ST Base 2024\u003cbr\u003e\nHarley-Davidson FLTRXSTSE CVO Road Glide ST Base 2025\u003cbr\u003e\nHarley-Davidson FXBB Street Bob 117 Base 2025\u003cbr\u003e\nHarley-Davidson FXBBS Street Bob 114 Base 2022\u003cbr\u003e\nHarley-Davidson FXBBS Street Bob 114 Base 2023\u003cbr\u003e\nHarley-Davidson FXBBS Street Bob 114 Base 2024\u003cbr\u003e\nHarley-Davidson FXBR Breakout 117 Base 2023\u003cbr\u003e\nHarley-Davidson FXBR Breakout 117 Base 2024\u003cbr\u003e\nHarley-Davidson FXBR Breakout 117 Base 2025\u003cbr\u003e\nHarley-Davidson FXFB Fat Bob 107 Base 2020\u003cbr\u003e\nHarley-Davidson FXFBS Fat Bob 114 Base 2022\u003cbr\u003e\nHarley-Davidson FXFBS Fat Bob 114 Base 2023\u003cbr\u003e\nHarley-Davidson FXLRS Low Rider S 117 Base 2022\u003cbr\u003e\nHarley-Davidson FXLRS Low Rider S 117 Base 2023\u003cbr\u003e\nHarley-Davidson FXLRS Low Rider S 117 Base 2024\u003cbr\u003e\nHarley-Davidson FXLRS Low Rider S 117 Base 2025\u003cbr\u003e\nHarley-Davidson FXLRST Low Rider ST 117 Base 2022\u003cbr\u003e\nHarley-Davidson FXLRST Low Rider ST 117 Base 2023\u003cbr\u003e\nHarley-Davidson FXLRST Low Rider ST 117 Base 2024\u003cbr\u003e\nHarley-Davidson FXLRST Low Rider ST 117 Base 2025\u003cbr\u003e\nHarley-Davidson FXRST Low Rider El Diablo 117 Base 2022\u003cbr\u003e\nHarley-Davidson FXST Softail Standard 107 Base 2022\u003cbr\u003e\nHarley-Davidson FXST Softail Standard 107 Base 2023\u003cbr\u003e\nHarley-Davidson FXST Softail Standard 107 Base 2024","brand":"TwinPower","offers":[{"title":"Default Title","offer_id":67603302187324,"sku":"twp486959","price":676.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1865\/9007\/files\/4a1ef9e5557e93ec281c231fed2b22fcL.jpg?v=1790744208","url":"https:\/\/necycleshop.com\/products\/twin-power-17-up-m8-black-4-25-inch-big-bore-cylinders-pair","provider":"NE Cycle Shop","version":"1.0","type":"link"}