Turn your Original Equipment 110 cubic inch model into a fast, reliable 117 cubic inch Twin Cam hauler without having to remove the motor from the chassis. This Street Performance Kit combines system-matched Screamin’ Eagle® big bore cylinders, forged pistons and performance cams and valve train components with the Original Equipment cylinder heads for a cost-effective boost in torque and performance.
- Black finish
- Exclusive bolt-on 4.125" cylinders are engineered with high strength slim-wall spigots that slip into the factory 110CI crank case without any additional machining
- 4.125" flat top pistons team with the stock cylinder heads to produce a performance-enhancing 9.9:1 compression ratio
- High-lift SE-259E cam produces a boost in torque throughout the RPM range
- All EFI-equipped models require dealer-installed ECM calibration download or use of the tunable Screamin' Eagle® Street Tuner Kit* (priced separately)
- Recalibration is required for proper installation, See Dealer for details, Labor cost not included
- Includes 4.125" Bolt-On Cylinders, Forged 9.9:1 Compression Pistons & Rings, 58mm Throttle Body, High Flow Fuel Injectors, SE-259E Cams, Perfect-Fit Pushrods, High-Capacity Roller Tappets, Inner Cam Bearing, Top End & Cam Cover Gasket
Fits ’14-'17 CVO™ 110CI Softail® and '14-'16 CVO™ Touring models. Also fits ’16-'17 110CI FLSS, FLSTFBS and FXDLS models. Requires purchase of accessory 58mm air cleaner and Cam Drive Retention Kit P/N 25566-06 (except models equipped with Screamin' Eagle® Heavy Breather Elite Performance Air Cleaner Kits). Models equipped with Ventilator Air Cleaner require separate purchase of 58mm Air Cleaner Backplate P/N 29400038. All models required ECM calibration for proper installation. '16-'17 FXDLS and all '17 models require reclibration with Screamin' Eagle® Pro Street Tuner (sold separately).
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- 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.
Warranty1 year limited warranty – Go to www.h-d.com/warranty for full details
Requires ECM CalibrationYes
Sold in UnitEach
In The Box4.125" Bolt-On Cylinders, Forged 9.9:1 Compression Pistons and Rings, 58mm Throttle Body, High Flow Fuel Injectors, SE-259E Cams, Perfect-Fit Pushrods, High-Capacity Roller Tappets, Inner Cam Bearing Kit, Top End and Cam Cover Gaskets
Sold SeparatelyClick the Fitment tab above for details
Upgrade Stage LevelStage IV
I have a Low Ride S 2017, is necessary to buy Screamin' Eagle® Heavy Breather Elite Performance Air Cleaner Kits or already has my motorbike installed
Is the quoted price in US dollars?
do you have to use the street tuner
I have a 2016 Fatboy S does Harley make CNC heads for this bike or should I stay with the factory heads?
Will this kit work in an older bike that had a newer long block installed
Please Hold Your Iron Horses