Hastings Rings 2M5721-020 Piston Ring Set for Harley-Davidson Shovelhead, 3-5/8" Bore,.020 Oversize

Hastings moly piston ring set designed for a 3-5/8 inch bore and.020 oversize on Harley-Davidson Shovelhead engines. This set includes two pistons, providing a reliable and precise fit for engine rebuilds and longevity.

• Top compression rings: moly, 1/16 inch
• Oil rings: chrome
• Made in the USA
• Fits Harley-Davidson Shovelhead engines with a 3-5/8 inch bore
• Compatible with models: 1966–1984 FL; 1971–1984 FX; 1980–1984 FLT; 1982–1984 FXR
• Includes piston rings for two pistons
• Installation supports with Piston Ring Installer Plier Tool, Ring-O-Matic Ring Compressor Kit, Piston Pin Support Plate
• Designed to improve compression, reduce oil consumption, and enhance engine efficiency

Whether restoring a vintage Harley or rebuilding to restore engine power, Hastings Rings offer durable, precise engineering tailored for Shovelhead platforms.

Hastings moly piston ring set is for a 3-5/8 inch bore and is.020 oversize. Features moly top compression rings with the size of 1/16 inch and chrome oil rings.

The Hastings Rings 2M5721-020 is a high-quality piston ring set designed specifically for Harley-Davidson Shovelhead engines with a 3-5/8 inch bore. This set includes two pistons, providing a reliable and precise fit for optimal engine performance and longevity. Crafted in the USA, these piston rings are engineered to meet or exceed OEM specifications, ensuring durability and consistent operation across a variety of Harley-Davidson models.

They are suitable for use on 1966-1984 FL, 1971-1984 FX, 1980-1984 FLT, and 1982-1984 FXR models. The set features a.020 inch oversize, allowing for effective clearance adjustments during engine rebuilds or repairs. Designed with precision, these piston rings help maintain proper compression, reduce oil consumption, and improve engine efficiency. Installation is straightforward when used with compatible tools such as the Piston Ring Installer Plier Tool, Ring-O-Matic Ring Compressor Kit, and Piston Pin Support Plate, ensuring a smooth rebuild process. Whether you're restoring a vintage Harley or performing a rebuild to restore engine power, these Hastings piston rings are a dependable choice. Their robust construction and precise engineering make them suitable for both professional mechanics and experienced DIY enthusiasts. Trust Hastings Rings to deliver performance and durability in every set, helping your motorcycle run smoothly for miles to come.

Features:

• Designed for Harley-Davidson Shovelhead engines with a 3-5/8 inch bore

• Includes a pair of piston rings for two pistons

• Oversize:.020 inch for precise engine clearance adjustment

• Made in the USA with high-quality materials

• Suitable for models from 1966 to 1984 across various Harley-Davidson series

• Compatible with piston ring installer and compressor tools for easy installation

• Helps improve engine compression, efficiency, and oil control