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Motorcycle Parts & Accessories

Screamin' Eagle Performance

Builder Components

Screamin' Eagle High Compression Pistons – 135 CI 1

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Screamin' Eagle High Compression Pistons – 135 CI

Part Number: 21900164A

High-compression pistons 4.310" bore.

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Description

High-compression pistons 4.310" bore.

• Forged flat-top pistons

• Piston design and rings engineered to withstand increased combustion forces for outstanding durability

• Updated ring package with 1mm compression and scraper rings

• Gas-ported to assist with ring sealing while allowing for low-tension and reduced friction

Details

Replacement pistons for '21-later Milwaukee-Eight Touring models equipped with 135CI Stage IV Performance Crate engine.

Installation Instructions

Dealer Install Recommended: Yes

ECM Calibration Required: Yes

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©2024 H-D or its affiliates. HARLEY-DAVIDSON, HARLEY, H-D, and the Bar and Shield Logo are among the trademarks of H-D U.S.A., LLC. Third-party trademarks are the property of their respective owners.

©2024 H-D or its affiliates. HARLEY-DAVIDSON, HARLEY, H-D, and the Bar and Shield Logo are among the trademarks of H-D U.S.A., LLC. Third-party trademarks are the property of their respective owners.

Disclaimers

Please contact your nearest dealer for further details and final price for each model.
Recommended 91 octane (95 RON) or higher fuel (R+M)/2.
Values shown are nominal. Performance may vary by country and region.
Standard and optional wheels may vary by country and region.
Riding range estimates provided following the WMTC 134/2014 Annex VII Appendix 3.3 are based on expected performance of a fully-charged battery when operated under specific conditions. Actual range will vary depending on riding habits, ambient weather and equipment conditions. Range as shown is with maximum power and minimum regeneration selected.

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