Harley-Davidson announces Screamin’ Eagle kits that meet emissions standards across the U.S…. except California. 
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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. High-flow exhaust kits, performance cams, ultra-powerful Screamin? Eagle engines and a comprehensive line of upgrades get you to peak exhilaration quickly and smoothly with the power to handle whatever comes. Conquer the road ahead with H-D parts and accessories. SCREAMIN’ EAGLE® MILWAUKEE-EIGHT® ENGINE STAGE IV KIT 114CI OR 117CI TO 131CI
Go big or go home. With the largest displacement of any Harley-Davidson Stage Kit, this 114/117CI to 131CI Stage IV Kit was designed to deliver maximum horsepower ? all the way to the redline. Packaged with patent-protected cylinder technology, it allows for the largest Harley-Davidson bolt-on engine upgrade to any Milwaukee-Eight® motor. Features new CNC-ported heads with 1mm bigger valves than the previous generation, and fully machined combustion chambers. Coupled with the kit’s high-lift SE8-517 cam, high compression pistons and a 64mm throttle body and intake manifold, this combination delivers a thrilling 131 ft-lb of torque and 121 HP rear-wheel...