Harley-Davidson has announced new Screamin’ Eagle performance parts for MY17 and touring models. These performance parts include high-flow exhausts, performance cams, bore kits, and much more.
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 114/117CI 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 Harley-Davidson bolt-on engine upgrade to any Milwaukee-Eight motor.
This kit features new CNC-ported heads with 1mm bigger valves than the previous generation 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 or 171 Nm of torque and 121 HP rear-wheel output when paired with Screamin’ Eagle Street Cannon Mufflers. It’s designed to run 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.
Performance components include:
Screamin’ Eagle CNC Ported Cylinder Head with CNC machined chamber and 1mm larger valves than the previous generation
131 Stage IV Timer cover
SE8-517 High-Lift Cam
Forged High Compression Pistons
Screamin’ Eagle High-Performance Cam Bearing
Screamin’ Eagle High-Performance Tappets
Screamin’ Eagle 4.31″ Steel Sleeve Cylinders
Screamin’ Eagle 64mm Throttle Body and Cast Manifold
Screamin’ Eagle High Flow Injectors (5.5 g/sec)
Screamin’ Eagle Milwaukee-Eight Engine Stage IV Kit – 107CI to 128CI
This Stage IV Kit is similar to the aforementioned kit. It has similar performance parts like CNC-ported heads with 1mm bigger valves, fully machined combustion chambers, SE8-517 cam, high compression pistons, a 64mm throttle body and intake manifold. As a result, the engine delivers 126 ft-lb or 170 Nm of torque and 121 HP of power when paired with Screamin’ Eagle Street Cannon Mufflers.
The Screamin’ Eagle 128 Stage IV Kit is eligible for Custom Coverage under the motorcycle’s factory 24-month vehicle limited warranty when dealer-installed by an authorized H-D Dealer within 60 days of vehicle purchase and is otherwise backed by a 12-month limited warranty.
Performance components include:
Screamin’ Eagle CNC Ported Cylinder Head with CNC machined chamber and 1mm larger valves than the previous generation
128 Stage IV Timer cover
SE8-517 High-Lift Cam
Forged High Compression Pistons
Screamin’ Eagle High-Performance Cam Bearing
Screamin’ Eagle High-Performance Tappets
Screamin’ Eagle 4.31″ Steel Sleeve Cylinders
Screamin’ Eagle 64mm Throttle Body and Cast Manifold
Screamin’ Eagle High Flow Injectors (5.5 g/sec)
The Screamin’ Eagle 131 Stage IV Kits are eligible for Custom Coverage under the motorcycle’s factory 24-month vehicle limited warranty when dealer-installed by an authorized H-D Dealer within 60 days of vehicle purchase and is otherwise backed by a 12-month limited warranty.
The complete fitment of the kit can be found on Harley-Davidson’s official website.
