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 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.
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