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This Stage IV Kit was developed to deliver maximum horsepower from the Milwaukee-Eight® engine – all the way to the redline. The system-matched combination of larger displacement cylinders, free flowing CNC-Ported cylinder heads and a cam with the highest available valve lift are the starting point to building the perfect engine for the performance junkie. Designed for a high level of flexibility, this package is ideal for riders who like to comfortably cruise at lower rpm but still have plenty of arm-pulling acceleration when you whack the throttle. Kit includes CNC Ported Cylinder Heads with Performance Valve Springs, 64mm Throttle Body, High Flow Injectors (5.5g/s), 4.075″ Bolt-On Cylinders, Forged 11:1 High Compression Aluminum Coated Pistons and Rings, SE8-515 Cam, Cam Bearing Upgrade, High Performance Tappets, Multi-layer Coated Head Gaskets, High Capacity Clutch Springs (1200N) and most necessary gaskets and seals. For ’17 and ’18 Touring models, installation of oil pump cover P/N 62400206 is recommended (sold separately). All models require ECM calibration with Screamin’ Eagle® Pro Street Tuner for proper installation. See Dealer for details.
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Stage IV Kit 114 to 117CI – Air/Oil-Cooled
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Black with Highlighted Fins – Matches Original Equipment Non-CVO Engines
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Increases power by up to 40% when compared to the Original Equipment engine configurations
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Delivers increased response throughout the entire RPM range
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Maintains flat torque curve from cruising RPM to redline
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Can be installed without removing the engine from the chassis
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Retains Original Equipment Factory Warranty
Details
Fits ’18-’20 Softail® and ’19-’21 Touring models equipped with air/oil cooled 114CI Milwaukee-Eight® engine. Does not fit Trike models. Requires separate purchase of Cam Drive Retention Kit P/N 91800088. Installation may require Cam Spacer Kit P/N 25928-06. For ’17-’18 Touring models, installation of Oil Pump Cover P/N 62400206 is recommended (sold separately). All models require ECM calibration with Screamin’ Eagle® Pro Street Tuner or dealership installed Screamin’ Eagle calibration for proper installation. Pending approval for use in California on ’21 models. Refer to H-D.com/shop for status.
ECM Calibration Required:
Yes
Sold In Units:
Each
Screamin’ Eagle Stage Upgrade:
Stage IV
In the Box:
Screamin’ Eagle Cylinder Heads with Performance Valve Springs, Throttle Body, High Flow Injectors, Bolt-On Cylinders, Pistons, Piston Rings, Cam, Cam Bearings, Tappets, Head Gaskets, Top End, Cylinder Base and Cam Cover Gaskets, and Clutch Springs
WARRANTY:
1 year limited warranty – Go to www.h-d.com/warranty for full details
These Screamin’ Eagle® products are 50-State U.S. EPA compliant for sale and use on all applicable vehicles, including those that are pollution controlled. See Genuine Motor Parts and Accessories or Screamin’ Eagle Accessories catalog for fitment information. Screamin’ Eagle Performance products are intended for the experienced rider only.
Harley-Davidson® motorcycles modified with some Screamin’ Eagle® Performance products must not be used on public roads and, in some cases, may be restricted to closed-course competition. These performance parts are 49-state U.S. EPA compliant but are NOT compliant for sale or use in California on pollution-controlled motor vehicles. California guidelines on tampering can also lead to substantial fines and penalties. Screamin’ Eagle® Performance products are intended for the experienced rider only.
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