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

Part Number 92500078

FINAL SALE, NON-RETURNABLE

Finish / Color: Black Highlighted

Quantity:

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This Stage IV Kit was designed to deliver maximum horsepower – all the way to the redline. 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 126 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 Heads with CNC machined chamber and 1mm larger valves L93, Stage IV Timer Cover, SE8-517 High-Lift Cam, Forged High Compression Pistons, High Performance Cam Bearing, Tappets, 4.31" Steel Sleeve Cylinders, 64mm Throttle Body and Cast Manifold and High Flow Injectors (5.5 g/sec).

  • Stage IV Kit - 114CI to 128CI 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
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Fits '17-later Touring models equipped with air/Oil-Cooled Milwaukee-Eight® 107CI engine. Does not fit Trike models. '17-'19 models require separate purchase of High-Capacity Oil Pump P/N 62400247. '17-'18 Screamin' Eagle® High-Capacity Clutch Plate Kit P/N 37000258. Not for use with Screamin' Eagle® High-Flow Exhaust Systems with Street Cannon Mufflers. All models require ECM recalibration with the Pro Street Tuner for proper installation.

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  • 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.
  • Dealer Install Recommended

    Yes
  • Warranty

    1 year limited warranty – Go to www.h-d.com/warranty for full details
  • Requires ECM Calibration

    Yes
  • Certifications

    49-State U.S. EPA compliant
  • Sold in Unit

    Each
  • In The Box

    Click the Description tab above for details
  • Sold Separately

    Click the Fitment tab above for details
  • Upgrade Stage Level

    Stage IV

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    Prices listed are generally the Manufacturer's Suggested Retail Price (MSRP), excluding taxes and shipping. Prices at local dealerships may vary. All online orders will be fulfilled and shipped by
    Harley-Davidson Motor Company as the agent for the Selling Dealer.