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.
- Stage IV Kit 114CI to 117CI or 117CI to 117CI - Twin-Cooled
- CVO Black Granite - Matches Original Equipment CVO Engine
- Increases power by up to 40% when compared to the Original Equipment engine configurations
- Delivers increased response throughout the entire RPM range
- Maintains flat torque curve from cruising RPM to redline
- Can be installed without removing the engine from the chassis
- Retains Original Equipment Factory Warranty and 50-State U.S. EPA compliant
Dealer Install RecommendedYes
Warranty1 year limited warranty – Go to www.h-d.com/warranty for full details
Requires ECM CalibrationYes
Certifications50-State U.S. EPA compliant
Sold in UnitEach
In The BoxClick the Description tab above for details
Sold SeparatelyClick the Fitment tab above for details
Upgrade Stage LevelStage IV
Fits '17-later CVO™ Touring models equipped with 114CI or 117CI Twin-Cooled Milwaukee-Eight® engine. Requires separate purchase of Cam Drive Retention Kit P/N 25566-06. 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 for proper installation. See Dealer for details.
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- These Screamin' Eagle® products are 50-state street-legal for sale and use on all vehicles, including those that are pollution controlled. Complies with the requirements of 40 CFR Part 86, subparts E and F.
When installed by an authorized Harley-Davidson® Dealer at the time of vehicle delivery, compliant kits do not impact the vehicle’s limited warranty.
Q & A
2017 CVO 114 vs. 2018 CVO 117 stage 4 upgrade
can a 107 be made into a 117?
Please Hold Your Iron Horses