S.E. Forged High-Compression Piston Kit – 4.155” X 4.625” (125CI)

Developed to work in concert with the Screamin’ Eagle® Milwaukee-Eight® 125CI engine Stage III kits, these pistons increase the engine’s compression to 11.0:1 and deliver impressive gains in torque and horsepower when coupled with those kits.

• Designed for use with 4.155" Big Bore Cylinders

• Forged from high-strength aluminum

• Precision-machined and features coated skirts for a tight-tolerance fit and quieter operation

• Complete kit includes two pistons, rings, wrist pins and clips

Part Number: 21900183

Replacement pistons 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.