Developed to work in concert with the Screamin’ Eagle Milwaukee-Eight 131CI Stage IV kits, these pistons increase the engine’s compression and deliver impressive gains in torque and horsepower when coupled with those kits.

Key Features

• 4.310" Bore x 4.5" Stroke
• Replacement pistons for 17-later Milwaukee-Eight models equipped with 131CI Stage IV kits
• 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

Fitment

Replacement pistons for '17-'25 Touring and '18-'24 Softail Milwaukee-Eight models equipped with Screamin' Eagle 131 Stage IV kits. Does not fit '23-later Center Cooled Touring or '25-later Softail models.