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  • Screamin’ Eagle Milwaukee-Eight Engine Stage IV Kit - 107CI to 128CI Kit
  • Screamin’ Eagle Milwaukee-Eight Engine Stage IV Kit - 107CI to 128CI Kit

Screamin’ Eagle Milwaukee-Eight Engine Stage IV Kit - 107CI to 128CI Kit

List Price: $3,383.95
Our Price: $2,876.95
Most items ship within 1-2 business days

Product Details

21 DAY VENDOR LEAD TIME

Go big or go home. With the largest displacement of any Harley-Davidson Stage Kit, this 107CI to 128CI Stage IV Kit is 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. 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.

• 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
• Includes CNC Ported Cylinder Head with CNC machined chamber and 1mm larger valves, 131 Stage IV Timer cover, SE8-517 High-Lift Cam, Forged High Compression Pistons
• Also includes High Performance Cam Bearing and High Performance Tappets, 4.31" Steel Sleeve Cylinders, 64mm Throttle Body and Cast Manifold, High Flow Injectors (5.5 g/sec)
• Pending 49-State U.S. EPA compliant

 

Fitment:

Fits '18-later Softail® 107CI models (except FXFB). Requires separate purchase of Cam Drive Retention Kit P/N 25566-06. Installation may require Cam Spacer Kit P/N 25928-06. ’18 107CI models require separate purchase of Screamin' Eagle High-Capacity Clutch Plate Kit P/N 37000258. '18-'19 models require separate purchase of High-Capacity Oil Pump P/N 62400247. All models require ECM calibration with Screamin' Eagle Pro Street Tuner for proper installation.

Intermountain H-D Part #:

92500094

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