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NEW ARRIVAL — In Dealer Exclusive

Screamin’ Eagle 4.31 In. Big Bore Bolt-On Cylinders

Part Number: 16800407

Increase the displacement of your Milwaukee-Eight® engine without removing the engine from the chassis. The Screamin’ Eagle product team has engineered a patent protected 4.31” Big Bore Cylinder that increases the internal bore but slips into the existing case bore without modification.

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Screamin’ Eagle 4.31 In. Big Bore Bolt-On Cylinders
Increase the displacement of your Milwaukee-Eight® engine without removing the engine from the chassis. The Screamin’ Eagle product team has engineered a patent protected 4.31” Big Bore Cylinder that increases the internal bore but slips into the existing case bore without modification.
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Kit includes front and rear cylinders and gaskets
Screamin’ Eagle products are not available for sale and are not street legal in all countries. Please contact your local dealer for more information

Replacement cylinders for '23-Later FLHXSE and FLTRXSE and '24-later FLHX, FLTRX, and FLTRXSTSE models equipped with a 131ci/135ci Stage IV kit or 135ci Crate Engine.

Dealer Install Recommended: Yes
ECM Calibration Required: Yes
WARRANTY: 1 year limited warranty – Go to www.h-d.com/warranty for full details
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.
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