Our Fuel Moto 124" and 128" M8 bore kits are true bolt on combinations (no case boring required) and are sold as complete kits with the absolute highest quality components, all of which have been extensively tested in house both on the dynamometer as well as in real world conditions to deliver top level performance. $1,299.95 previous price $1,299.95. I went back and compared it to the Harley 131 kit which is $3500. The 124" kit works on 2017-2019 H-D Milwaukee-Eight 107" engines (air cooled & twin cooled), and the FM 128 kit works on 2017-2019 114" and 117" engines. Order a Trask Harley Turbo Kit The LE 151 kit has 3-less moving parts on a Bagger version of the M8 engine. THIS IS THE TWIN-COOLED / BLACK GRANITE KIT.TWIN COOLED AND BLACK HIGHLIGHTED VARIANTS AVAILABLE. More on the M8 124" and 128" Big Bore Kits » These kits do not require case boring, reballancing flywheels or valve adjustment, just bolt in tune and go. Image not available. The 131-inch stroker kit combines a new design forged piston with their 4.25-inches cylinders. When paired with Harley-Davidson's aftermarket Screamin' Eagle Street Cannon mufflers, the new 131-cu.in. SUBURBAN SPEED MILWAUKEE EIGHT 107 TO 128 & 114-117 TO 131 CI PISTON & CYLINDER KIT. Tune a Harley-Davidson Milwaukee-Eight engine to the max with a potent new street-legal Screamin’ Eagle Milwaukee-Eight Stage IV Kit available now from Harley-Davidson Genuine Motor Parts & Accessories. (Fits Twin Cooled and Oil cooled engines) M8 126 compression 11.15 to 1 with .040 head gasket M8 130 compression 11.45 to 1 with .040 head gasket. Our most popular Twin Cam kits! S&S has been hard at work trying to establish themselves as the #1 parts supplier for the new H-D M8 engine. Your online source for aftermarket Harley-Davidson , Indian and Victory parts and accessories. The LE 151 kit has 6 less moving parts on Softail version of the M8 engine. Torque. Picture Information. The Screamin’ Eagle Milwaukee Eight 131 Crate Engine features the same 114mm (4.5”) stroke as the 114 Milwaukee Eight, but has been bored out from 101mm (4”) to 109mm (4.31”). Harley-Davidson’s Screamin’ Eagles factory customs department has unleashed its biggest engine yet, the 131-cube (2147cc) crate motor. Milwaukee Eight 126 and 130 kits offer a 70% increase in power over stock. Added 6/3/16 S&S has revealed its new 131 cubic-inch stroker kit for the already-torquey M8 engine. The House of Harley-Davidson service department is staffed year-round by the best trained technicians in the world, and House of Harley-Davidson offers Wisconsin’s best Riding Academy learn-to-ride class. X. And frankly I think the V-rod engine was/is the best engine Harley ever put out. Check if this part fits your vehicle. Together they net a tire-melting 131 cubic inches when paired with their 4.625-inch stroker crank. This is due to LE having a perfectly balanced crank. harley-davidson announces new screamin’ eagle® 128/131 stage iv kits for my17 + touring models “Go Big or Go Home” With New Screamin’ Eagle® Harley-Davidson Performance Parts MILWAUKEE (March 25, 2020) – The all-new Harley-Davidson Screamin’ Eagle® products for your ride are here to keep the thrills rolling mile after mile. With the largest displacement of any Harley-Davidson® Stage Kit, this 114CI to 131CI Stage IV Kit was designed to deliver maximum horsepower – all the way to the redline. M8 124" and 128" Big Bore Kits. Harley-Davidson takes a track day to test its fastest production motorcycle. Harley reports that the new Screamin’ Eagle Milwaukee-Eight Stave IV Kit can produce up to 52% more power from the stock Milwaukee-Eight 107 and 114 engines. My factory warranty expires on Sept. 24, so I'm not too worried about that. 2017 M8 FM 117″ Stg III Kit WM8-22X JP 2/1/2 2017 M8 CVO FM 124″ Kit WM8-408 Jackpot 2/1/2 2018 M8 FM 124″ Kit WM8-408 Level A heads Jackpot XXX 2017 M8 FM 124 Kit WM8-9F60 Big Valve heads Jackpot XXX 2018 Softail FM 124 Kit WM8-22X stock heads D&D 2/1 131" Big Bore Cylinder & Piston Stroker Kits. S&S just released the details on their new 131 CI stroker kit, aimed at bringing massive power upgrades to the highly successful Harley-Davidson Milwaukee Eight big twin engine. ... S&S has revealed its new 131 cubic-inch stroker kit for the already-torquey M8 engine. When combined with the appropriate performance modifications offers output in excess of 140+ horsepower; even more with head work. Trask Performance manufactures the best Harley Davidson Turbo systems. This part is being sold “As Is” We have made every effort to display and describe the part including any damage as accurately as possible – contact us if you have any questions Stage 2 Harley Turbo kit uses a larger turbo and are for engines over 120 inch. ... At some point I suppose the M8 patent expires and S&S can get working on putting out something crazy. Get the amplified powertrain performance you crave. Opens image gallery. for 2017-20 Harley-Davidson ® M8 Models. I don’t know of too many engines that produce a pound-foot of torque per cubic inch, and certainly Harley-Davidson has not offered something like this in the past. Have one to sell? Not long ago, Harley announced its 131-inch Milwaukee Eight crate motor; now you can get all the components to roll your own in the privacy of your own home. I have stock pipes with V&H slip-ons. I hvae a "K&N - Fuel Moto Custom Hi Flow Air Cleaner for M8 Ventilator", which I think will be ok. ... 117 to 131ci flat top piston & cylinder kit for your 2017 -UP Harley-Davidson® Milwaukee Eight. Based on what a SE 117" kit puts out with the Street Tuner, and within EPA guidelines, I would guess that the 131" kit wouldn't make more than maybe 122Hp/135Tq at best. The engine is designed to run at high rpm and to provide a significant boost of torque from cruising speed. Still a lot of power but Jamie at FM has built many M8's that get easily in the 140's Hp/Tq with the stock crank and he claims they are holding together just fine. Revolution Performance dyno charts for 131cid motors. 65600177. Go big or go home. Select Vehicle. Now, I know Harley promised more torque and better sound with the M8 engine, but we have M8 owners calling and stopping by the shop all the time looking for exactly that - more torque, a better sound and also more power. $1,296.62. Never installed. Packaged with patent-protected c This is roughly an additional 3% on top of the standard overbore conversion described below. Part No. S&S Cycle 910-0763 Stroker Cylinder & Piston Kit Standard 131" Black Harley M8 1. International sales-expect additional shipping charges. In most cases when Stage 1 upgrades are complete, our next go-to solution is an immediate cam upgrade and here's why: 1. Save 10% ($117.89) today when you shop RevZilla for your S&S 128" Big Bore Kit For Harley 114" Milwaukee Eight 2017-2021! Harley Davidson M8 Header for 131 Engine Kit. Pavement-pounding muscle. Just my opinion of course, and I don't claim to be any kind of Harley guy. Sections of this page. engine produces 131 pound-feet of torque and 121 horsepower. Harley-Davidson M8 performance products are now available at Iron Aces Speed Shop for '17 & newer Harley touring models. For HD 2017 & later with M8. By getting a Harley stage kit you don't have to spend a bunch of time researching and piecing things out. SHOP NOW The SE kit includes new heads, exhaust header, bigger intake and throttle body, oil cooler with fan, and bigger fuel injectors. The Screamin’ Eagle Milwaukee Eight 131 Crate Engine is a bolt-in replacement for 2017 and later Harley-Davidson Touring models running an oil … I'm seriously thinking about the 131 kit for my 2018 Heritage 114. The S&S Power Package is the ideal combination of performance and savings, designed to transform your M8 without breaking the bank. Yesterday at 4:47 PM. I am intrigued by the 131, and will see how it goes if/when these start being used in the wild. Free Shipping, Lowest Price Guaranteed & Top of the Line Expert Service. Free shipping. Harley now has Screamin’ Eagle Milwaukee-Eight 131 (2151cc) crate engines for select Softail models. Complete 124" and 128" Big Bore and Cam Chest Kits! Tune a Harley-Davidson Milwaukee-Eight engine to the max with a potent new street-legal Screamin’ Eagle Milwaukee-Eight Stage IV Kit available now from Harley-Davidson Genuine Motor Parts & Accessories.. Delivering a boost in both displacement and air flow through the engine, these complete kits were developed to deliver maximum horsepower from the Milwaukee-Eight engine all … 98ci for 1999-2006 Models, 107ci for 2007-Present Models. Harley Davidson Forums. But, higher number stage kits are well beyond just getting a new cam. You know what to do. Bolt-On Big Bore Kits - Only $530! The Screamin’ Eagle 131 is a bolt-in replacement for 2017-later model Harley-Davidson Touring motorcycles originally equipped with a Milwaukee-Eight Oil-Cooled or Twin-Cooled™ engine, designed to run at high rpm and provide a significant boost of torque from cruising speed. Also kits to expand and enhance your M8 107, your M8 114… winter is coming. 131 cid Dyno Charts. M8 131 Tugmotor kit, if never intended to be rpm/hp optimized, could use all the lower engine speed picks for putting together a system of components that works well for reasonable upgrade money. The engines are detailed with 131 Stage IV … S&S Cycle Launches 131 CI Kit For Harley-Davidson Milwaukee Eight. House of Harley-Davidson has graduated more new riders than all local dealerships combined. Stage 1 Harley Turbo kits are bolt on turbo kits for Twin Cam and Milwaukee 8's that produce huge horsepower gains on your Harley. Looking forward to seeing what these new engines are gonna be about. For even more torque and power with your stock cylinders, let us bore them all the way to 3.938", which gives either 98 or 107ci depending on the year of your bike. Horsepower. Jump to. By removing the stock balancer The LE 151 motor kit accelerates much faster. As the stage kits get higher in number the more parts and labor are involved. 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