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
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.
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
2017 CVO 114 vs. 2018 CVO 117 stage 4 upgrade
can a 107 be made into a 117?
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