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Screamin' Eagle Forged High-Compression Piston Kit – 4.155” X 4.625” (125CI)

Del | SKU-nummer: 21900183

Developed to work in concert with the Screamin’ Eagle® Milwaukee-Eight® 125CI engine Stage III kits, these pistons increase the engine’s compression to 10.9:1 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

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.

Installation Instructions

ECM Calibration Required:

Yes

Sold Separately:

See fitment for details

Sold In Units:

Pair

Screamin' Eagle Stage Upgrade:

Stage III

In the Box:

Two pistons, rings, wrist pins and clips, 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.