SCREAMIN’ EAGLE® MILWAUKEE-EIGHT ® ENGINE STAGE IV KIT 114CI OR 117CI TO 131CI HARLEY DAVIDSON

January 15th, 2020 by


Go big or go home. 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. Packaged with patent-protected cylinder technology, it allows for the largest bolt-on engine upgrade to any Milwaukee-Eight® motor. Features new CNC-ported heads with 1mm bigger valves 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 output when paired with Screamin’ Eagle® Street Cannon Mufflers.. It’s designed to run wide open at high-end RPMs and provide a significant boost of torque from cruising speed. You’ll feel the difference as soon as you twist the throttle. When installed by an authorized Harley-Davidson Dealer® within 60 days of the vehicle purchase, compliant kits do not impact the vehicle’s limited warranty.
• Delivers increased response throughout the entire RPM range
• Provides thrilling acceleration when twisting the throttle
• Maintains flat torque curve from cruising RPM to redline
• Can be installed without removing the engine from chassis

49-State U.S. EPA Compliant on ’17-later Touring Models.

Performance components include:
• Screamin’ Eagle CNC Ported Cylinder Head with CNC machined chamber and 1mm larger valves
• 131 Stage IV Timer cover • SE8-517 High-Lift Cam
• Forged High Compression Pistons
• Screamin’ Eagle High Performance Cam Bearing
• Screamin’ Eagle High Performance Tappets
• Screamin’ Eagle 4.31″ Steel Sleeve Cylinders
• Screamin’ Eagle 64mm Throttle Body and Cast Manifold
• Screamin’ Eagle High Flow Injectors (5.5 g/sec)

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