131" Big Bore Cylinder & Piston Stroker Kits. Packaged with patent-protected c $1,296.62. 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. Free Shipping, Lowest Price Guaranteed & Top of the Line Expert Service. As the stage kits get higher in number the more parts and labor are involved. More on the M8 124" and 128" Big Bore Kits » The LE 151 kit has 6 less moving parts on Softail version of the M8 engine. This is due to LE having a perfectly balanced crank. Harley Davidson Forums. X. Also kits to expand and enhance your M8 107, your M8 114… winter is coming. Trask Performance manufactures the best Harley Davidson Turbo systems. House of Harley-Davidson has graduated more new riders than all local dealerships combined. Select Vehicle. $1,299.95 previous price $1,299.95. 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. Bolt-On Big Bore Kits - Only $530! S&S has been hard at work trying to establish themselves as the #1 parts supplier for the new H-D M8 engine. 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. For HD 2017 & later with M8. The LE 151 kit has 3-less moving parts on a Bagger version of the M8 engine. S&S has revealed its new 131 cubic-inch stroker kit for the already-torquey M8 engine. 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. When paired with Harley-Davidson's aftermarket Screamin' Eagle Street Cannon mufflers, the new 131-cu.in. Harley-Davidson M8 performance products are now available at Iron Aces Speed Shop for '17 & newer Harley touring models. 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. You know what to do. The 131-inch stroker kit combines a new design forged piston with their 4.25-inches cylinders. 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. 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. 65600177. Added 6/3/16 Harley-Davidson takes a track day to test its fastest production motorcycle. engine produces 131 pound-feet of torque and 121 horsepower. Free shipping. Sections of this page. Go big or go home. for 2017-20 Harley-Davidson ® M8 Models. Pavement-pounding muscle. In most cases when Stage 1 upgrades are complete, our next go-to solution is an immediate cam upgrade and here's why: 1. Get the amplified powertrain performance you crave. 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. Jump to. And frankly I think the V-rod engine was/is the best engine Harley ever put out. Torque. 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”). This is roughly an additional 3% on top of the standard overbore conversion described below. ... 117 to 131ci flat top piston & cylinder kit for your 2017 -UP Harley-Davidson® Milwaukee Eight. 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. Harley-Davidson’s Screamin’ Eagles factory customs department has unleashed its biggest engine yet, the 131-cube (2147cc) crate motor. My factory warranty expires on Sept. 24, so I'm not too worried about that. These kits do not require case boring, reballancing flywheels or valve adjustment, just bolt in tune and go. THIS IS THE TWIN-COOLED / BLACK GRANITE KIT.TWIN COOLED AND BLACK HIGHLIGHTED VARIANTS AVAILABLE. Our most popular Twin Cam kits! Yesterday at 4:47 PM. S&S Cycle Launches 131 CI Kit For Harley-Davidson Milwaukee Eight. ... S&S has revealed its new 131 cubic-inch stroker kit for the already-torquey M8 engine. Milwaukee Eight 126 and 130 kits offer a 70% increase in power over stock. Your online source for aftermarket Harley-Davidson , Indian and Victory parts and accessories. The S&S Power Package is the ideal combination of performance and savings, designed to transform your M8 without breaking the bank. 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 (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. By getting a Harley stage kit you don't have to spend a bunch of time researching and piecing things out. SUBURBAN SPEED MILWAUKEE EIGHT 107 TO 128 & 114-117 TO 131 CI PISTON & CYLINDER KIT. 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. When combined with the appropriate performance modifications offers output in excess of 140+ horsepower; even more with head work. 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 hvae a "K&N - Fuel Moto Custom Hi Flow Air Cleaner for M8 Ventilator", which I think will be ok. 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. Save 10% ($117.89) today when you shop RevZilla for your S&S 128" Big Bore Kit For Harley 114" Milwaukee Eight 2017-2021! 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. Looking forward to seeing what these new engines are gonna be about. Part No. ... At some point I suppose the M8 patent expires and S&S can get working on putting out something crazy. I went back and compared it to the Harley 131 kit which is $3500. 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. 98ci for 1999-2006 Models, 107ci for 2007-Present Models. M8 124" and 128" Big Bore Kits. 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. International sales-expect additional shipping charges. 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. Revolution Performance dyno charts for 131cid motors. Together they net a tire-melting 131 cubic inches when paired with their 4.625-inch stroker crank. I have stock pipes with V&H slip-ons. Have one to sell? 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 … Stage 2 Harley Turbo kit uses a larger turbo and are for engines over 120 inch. SHOP NOW Opens image gallery. 131 cid Dyno Charts. Image not available. Just my opinion of course, and I don't claim to be any kind of Harley guy. Never installed. S&S Cycle 910-0763 Stroker Cylinder & Piston Kit Standard 131" Black Harley M8 1. 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 Order a Trask Harley Turbo Kit I am intrigued by the 131, and will see how it goes if/when these start being used in the wild. Picture Information. 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. Harley now has Screamin’ Eagle Milwaukee-Eight 131 (2151cc) crate engines for select Softail models. Harley Davidson M8 Header for 131 Engine Kit. By removing the stock balancer The LE 151 motor kit accelerates much faster. Horsepower. The SE kit includes new heads, exhaust header, bigger intake and throttle body, oil cooler with fan, and bigger fuel injectors. 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. Check if this part fits your vehicle. But, higher number stage kits are well beyond just getting a new cam. The engines are detailed with 131 Stage IV … Complete 124" and 128" Big Bore and Cam Chest Kits! 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