HASTINGS Replacement Piston Rings — Bore 3.498", Oversize +0.030" – 78-86 Big Twin, 80, 83-98 Touring, 85-99 Softail, 91-98 Dyna, 82-94 FXR, 86-03, 05-17 Sportster

Replacement Piston Rings designed for performance replacement applications. 🔧

Includes top compression rings, second compression rings, and three-piece oil control rings that provide uniform pressure through four steel rails and two expanders for positive oil control.

• Top compression rings are barrel face to aid heat transfer between the piston and cylinder wall.
• Second compression rings are reverse torsional taper face to promote side sealing and better oil economy.
• Oil control rings are a three-piece flex vent design for improved conformability to the bore.

The reverse twist ring combined with a taper-machined ring face duplicates the OD bottom-side scraping edge of a positive twist torsional ring.

Includes enough rings for two pistons (unless noted), with two rings per groove except for the rails where two rail rings share one expander.

Please read the instructions furnished with the piston for correct top ring end gap and proper heat management.

Made in the USA. 🇺🇸