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Screamin' Eagle 4.155” (125CI) Big Bore Bolt-On Cylinders

Del | SKU-nummer: 16800442

Increase the displacement of your Milwaukee-Eight® engine without removing the engine from the chassis. The Screamin’ Eagle product team has engineered a 4.155" Big Bore Cylinder that increases the internal bore but slips into the existing case bore without modification. When combined with the appropriate piston combination in the Screamin’ Eagle ® Stage III kit, these cylinders can increase the displacement of your Milwaukee-Eight engine from 121CI to 125CI.

  • Black Granite Highlighted

  • Replacement cylinders for '23-later FLHXSE and FLTRXSE and '24-later FLTRXSTSE models equipped with a 121ci/125ci Stage III kit

  • Kit includes front and rear cylinders and gaskets

Replacement cylinders for '23-later FLHXSE and FLTRXSE, '24-later FLTRXSTSE and ‘26-later FLHXLSE and FLHXSTSE models equipped with a 121ci to 125ci Stage III kit.

Installation Instructions

Dealer Install Recommended:

Yes

ECM Calibration Required:

Yes

Sold Separately:

See fitment for details

Sold In Units:

Pair

Screamin' Eagle Stage Upgrade:

Stage III

In the Box:

Front and rear cylinders, gaskets and installation instructions

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.