HASTINGS Replacement Piston Rings — Bore 3.498 in – 48-64, 70-84 Big Twin, 80, 83-84 Touring, 82-83, 87 FXR, 87 Sportster

🔧 Replacement piston rings engineered to restore compression, control oil consumption, and improve combustion sealing.

• Includes top compression rings, second compression rings, and oil control rings.
• Top compression rings are barrel face to assist heat transfer between the piston and cylinder wall.
• Second compression rings feature reverse torsional taper faces and a reverse twist design to promote side sealing and better oil economy.
• Oil control rings are a three-piece flex vent design with two expanders and four steel rails to provide uniform pressure and positive oil control.
• Three-piece design allows rails to be manufactured with a small cross-sectional area for improved conformability to the bore.

Kit includes: 2x top compression rings, 2x second compression rings, 2x expander rings, and 4x steel rails — enough for two pistons unless noted.

🇺🇸 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 the instructions furnished with the piston for correct ring installation.