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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.
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.
Screamin' Eagle 4.155” (125CI) Big Bore Bolt-On Cylinders
12,209.00 kr