HASTINGS Replacement Piston Rings — 3.498" bore, +0.040" oversize – 78-86 Big Twin, 80, 83-90 Touring, 85-86 Softail, 82-94 FXR

High-performance replacement piston rings designed to control combustion gases and manage oil for reliable engine operation. ⚙️

Includes top compression rings, second compression rings, and three-piece oil control rings to promote sealing, heat transfer, and oil economy.

• Top compression rings are barrel face to aid heat transfer.
• Second compression rings are reverse torsional taper face for improved side sealing.
• Oil control rings are three-piece flex vent with two rails and an expander for consistent oil control.

Reverse twist ring with a taper-machined face duplicates the OD bottom side scraping edge of a positive twist ring, improving oil control and wear characteristics.

Made in the USA 🇺🇸

Due to the thermal conductivity and design of KB pistons, special attention is required to the top ring end gap. Please read instructions furnished with piston for correct ring installation.

Includes enough rings for two pistons. Two rings per groove, except rails: two rails per one expander ring.

Kit includes:

• 2× Top compression rings
• 2× Second compression rings
• 2× Expander rings
• 4× Steel rails