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For the rider demanding for no-compromise performance. This is the most displacement, and the most power, ever created by Harley-Davidson for a street-compliant crate performance engine. Engineered by the pros at Harley-Davidson and built from the bottom up in Milwaukee, this street-tuned 135-cubic-inch Screamin’ Eagle® Crate Engine is designed to run with a wide-open throttle at high engine speeds and provide instant passing power from cruising speed. Made for riders seeking maximum displacement, compression, and flow, it delivers 143 ft-lb of torque to the rear wheel as soon as the throttle is cranked. Stage IV equipped engine includes 135 Stage IV badging on the cylinder heads and timer cover to highlight the powerplant. This street-ready performance motor features the finest Screamin’ Eagle® components: Screamin’ Eagle® Extreme CNC-ported cylinder heads, SE8-517 high-lift cam, new high-compression forged pistons, high-performance cam bearing, high-performance tappets, patent-protected 4.31″ steel sleeve cylinders, new 4 5/8″ flywheel, new 68mm throttle body and CNC-machined 68mm intake manifold, new 6.8 g/sec fuel injectors, and Screamin’ Eagle® Pro Billet Cam Plate and Oil Pump.
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Chrome finish
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We’ve done your homework – Engineered and tested as a complete collection of high-performance components by the Screamin’ Eagle® pros at Harley-Davidson
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This combination is designed for wide open throttle along with high end RPMs and a significant torque increase from a cruising speed
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Ready for bolt-in installation in the Original Equipment-style chassis of your Touring bike
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No special fabrication or engine-mount relocation is required
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Engine features up to two-year manufacturer’s warranty for unmatched confidence when dealer-installed within 60 days of vehicle purchase through the Custom Coverage program
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Factory assembled at the Powertrain Operations facility in Milwaukee, Wisconsin
Details
Fits ’21-’25 Touring models equipped with Twin-Cooled™ Milwaukee-Eight engine. Does not fit Trike models. Does not fit ’23 later FLHXSE, FLTRXSE and ’24-later FLHX, FLTRX, FLTRXSTSE and ’25-later FLTRXRRSE models. Requires separate purchase of Head Pipe P/N 65600177. All models require ECM recalibration with Screamin’ Eagle Pro Street Tuner P/N 41001141 for proper installation. Does not fit California models. Does not fit Center Cooled models.
Dealer Install Recommended:
Yes
ECM Calibration Required:
Yes
Sold Separately:
See Fitment for details
Sold In Units:
Each
Screamin’ Eagle Stage Upgrade:
Stage IV
In the Box:
See Description above for details
Certification:
49-State U.S. EPA compliant
Notes:
Replacement engines must be re-fitted with emission control devices and systems appropriate for the vehicle model and model year in order to ensure emissions compliance. Failure to do so constitutes tampering under U.S. EPA guidelines and can lead to substantial fines and penalties.
Harley-Davidson® motorcycles modified with some Screamin’ Eagle® Performance products must not be used on public roads and, in some cases, may be restricted to closed-course competition. These performance parts are 49-state U.S. EPA compliant but are NOT compliant for sale or use in California on pollution-controlled motor vehicles. California guidelines on tampering can also lead to substantial fines and penalties. Screamin’ Eagle® Performance products are intended for the experienced rider only.
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