Harley-Davidson Milwaukee-Eight 131ci Stage IV KIT
131ci Screamin Eagle Milwaukee-Eight Stage IV Kit

New 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 is designed to deliver maximum power - all the way to the redline.

It features patent-protected cylinder technology and enables the largest engine upgrade for Milwaukee-Eight® engines. Featuring new CNC bored heads with 1 mm larger valves and fully machined combustion chambers.

The various kits with part no.

Up to 121 hp are possible at the rear wheel

Combined with the SE8-517 high lift cam, high compression pistons and a 64mm throttle body and intake manifold, this combination delivers an exciting 177Nm of torque and 121hp of rear wheel horsepower in combination with Screamin‚ Eagle® Street Cannon mufflers.

It is designed to run wide open at high revs and significantly increase torque in relation to cruising speed. You will feel the difference as soon as you twist the throttle.

When installed by an authorized Harley-Davidson® dealer within 60 days of vehicle purchase, compliant kits do not affect the vehicle's limited warranty. (If necessary, ask the dealer in Germany)

131ci cover and emblem

The kit includes: CNC cylinder head with CNC machined chamber and 1mm larger valves, Stage IV ignition cover, SE8-517 high lift cam, forged high compression pistons, high performance cam bearings and tappets, 4.31-inch steel sleeve cylinder, 64mm throttle body and cast manifold and high flow injectors (5.5g/s).

  • Stage IV Kit - 114ci or 117ci to 131ci for oil cooled and twin cooled models.
  • Delivers improved response across the entire speed range.
  • Provides exciting acceleration when turning the throttle.
  • Maintains a flat torque curve from cruising speed to redline.
  • Can be installed without removing the engine from the chassis.
  • Maintains the factory warranty for the original equipment.
  • US EPA conformity for Touring models from ’17 onwards

For more information about a possible approval in Germany, please contact your Harley Dealer.

Stage IV Kit - 114ci or 117ci to 131ci part numbers

Oil cooled Part No.: 92500079 Color Black Highlighted

Oil cooled Part No.: 92500082 Color Black Granite

Twin Cooled Part No.: 92500080 Color Black Highlighted

Twin Cooled Part No.: 92500081 Color Black Granite

131ci Shield Part No.: 25600129 Gloss black

Cover from the air filter for the shield, if the matching air filter is available. Part No.: 25600117 Gloss black

Harley-Davidson US Online Shop 131ci Stage IV Kit

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