Performance Kits
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Screamin' Eagle® Milwaukee-Eight 131 Performance Crate Engine Oil-Cooled
Leave other riders in the dust with the biggest, most powerful street-compliant crate performance engine Harley-Davidson® has ever created. Built from the bottom up in Milwaukee, this street-tuned 131-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 131 ft-lb of torque to the rear wheel as soon as the throttle is cranked. Stage IV equipped engine includes 131 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: engraved CNC-ported cylinder head with CNC-machined chamber and 1mm larger valves, SE8-517 high-lift cam, high-compression forged pistons, high-performance cam bearing, high-performance tappets, patent-protected 4.31" steel sleeve cylinders, 64mm throttle body, and cast manifold and 5.5 g/sec fuel injectors.
- Black and chrome finish.
- Ready for bolt-in installation in the original equipment-style chassis of your touring bike.
- No special fabrication or engine-mount relocation is required.
- Engine features one-year manufacturer's warranty for unmatched confidence.
- Eligible for coverage under factory vehicle warranty when dealer-installed within 60 days of vehicle purchase.
- Factory assembled at the powertrain operations facility in Milwaukee, Wisconsin.
Installed Kit Price: Contact Us for Pricing
(Exhaust not included, see dealer for details).
Screamin' Eagle® Milwaukee-Eight 131 Performance Crate Engine Twin-Cooled™
Leave other riders in the dust with the biggest, most powerful street-compliant crate performance engine Harley-Davidson® has ever created. Built from the bottom up in Milwaukee, this street-tuned 131-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 131 ft-lb of torque to the rear wheel as soon as the throttle is cranked. Stage IV equipped engine includes 131 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: engraved CNC-ported cylinder head with CNC-machined chamber and 1mm larger valves, SE8-517 high-lift cam, high-compression forged pistons, high-performance cam bearing, high-performance tappets, patent-protected 4.31" steel sleeve cylinders, 64mm throttle body, and cast manifold and 5.5 g/sec fuel injectors.
- Black and chrome finish.
- Ready for bolt-in installation in the original equipment-style chassis of your touring bike.
- No special fabrication or engine-mount relocation is required.
- Engine features one-year manufacturer's warranty for unmatched confidence.
- Eligible for coverage under factory vehicle warranty when dealer-installed within 60 days of vehicle purchase.
- Factory assembled at the powertrain operations facility in Milwaukee, Wisconsin.
Installed Kit Price: Contact Us for Pricing
(Exhaust not included, see dealer for details).
Screamin' Eagle® Milwaukee-Eight Engine Stage IV Kit - 114CI or 117CI to 131CI
Go big or go home. With the largest displacement of any Harley-Davidson® Stage Kit, this 114CI to 131CI Stage IV Kit was designed to deliver maximum horsepower - all the way to the redline. Packaged with patent-protected cylinder technology, it allows for the largest bolt-on engine upgrade to any Milwaukee-Eight® motor. Features new CNC-ported heads with 1mm bigger valves and fully machined combustion chambers. Coupled with the kit's high-lift SE8-517 cam, high compression pistons, and a 64mm throttle body and intake manifold, this combination delivers a thrilling 131 ft-lb of torque and 121 HP rear-wheel output when paired with Screamin' Eagle® Street Cannon Mufflers. It's designed to run wide open at high-end RPMs and provide a significant boost of torque from cruising speed. You'll feel the difference as soon as you twist the throttle. When installed by an authorized Harley-Davidson® Dealer within 60 days of the vehicle purchase, compliant kits do not impact the vehicle's limited warranty. Kit includes: CNC ported cylinder head with CNC machined chamber and 1mm larger valves, Stage IV Timer Cover, SE8-517 high-lift-cam, forged high compression pistons, high performance cam bearing and tappets, 4.31" steel slave cylinders, 64mm throttle body and cast manifold, and high flow injectors (5.5 g/sec).
- Stage IV Kit - 114CI or 117CI to 131CI for Oil Cooled models.
- Delivers increased response throughout the entire RPM range.
- Provides thrilling acceleration when twisting the throttle.
- Maintains flat torque curve from cruising RPM to redline.
- Can be installed without removing the engine from chassis.
- Retains original equipment factory warranty.
- 49-State U.S. EPA Compliant on '17-later Touring models.
Installed Kit Price: Contact Us for Pricing
(Exhaust not included, see dealer for details).
Screamin' Eagle® Milwaukee-Eight Engine Stage IV Kit - 114CI or 117CI to 131CI
Go big or go home. With the largest displacement of any Harley-Davidson® Stage Kit, this 114CI to 131CI Stage IV Kit was designed to deliver maximum horsepower - all the way to the redline. Packaged with patent-protected cylinder technology, it allows for the largest bolt-on engine upgrade to any Milwaukee-Eight® motor. Features new CNC-ported heads with 1mm bigger valves and fully machined combustion chambers. Coupled with the kit's high-lift SE8-517 cam, high compression pistons, and a 64mm throttle body and intake manifold, this combination delivers a thrilling 131 ft-lb of torque and 121 HP rear-wheel output when paired with Screamin' Eagle® Street Cannon Mufflers. It's designed to run wide open at high-end RPMs and provide a significant boost of torque from cruising speed. You'll feel the difference as soon as you twist the throttle. When installed by an authorized Harley-Davidson® Dealer within 60 days of the vehicle purchase, compliant kits do not impact the vehicle's limited warranty. Kit includes: CNC ported cylinder head with CNC machined chamber and 1mm larger valves, Stage IV Timer Cover, SE8-517 high-lift-cam, forged high compression pistons, high performance cam bearing and tappets, 4.31" steel slave cylinders, 64mm throttle body and cast manifold, and high flow injectors (5.5 g/sec).
- Stage IV Kit - 114CI or 117CI to 131CI for Twin-Cooled™ models.
- Delivers increased response throughout the entire RPM range.
- Provides thrilling acceleration when twisting the throttle.
- Maintains flat torque curve from cruising RPM to redline.
- Can be installed without removing the engine from chassis.
- Retains original equipment factory warranty.
- 49-State U.S. EPA compliant on '17-later touring models.
Installed Kit Price: Contact Us for Pricing
(Exhaust not included, see dealer for details).