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.

Key Features

• Granite 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

Fitment

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 91800088 (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) or dealership installed Screamin’ Eagle calibration.