HASTINGS Replacement Piston Rings — Bore 3.498", Oversize +0.020" – 83-86 Big Twin, 83-90, 95 Touring, 85-86, 99 Softail, 83-94 FXR, 99-00 CVO, 84, 89 Police, 88-99 Sportster

Replacement piston rings engineered to restore sealing, control oil, and maintain combustion efficiency. 🔧

• Includes top compression rings, second compression rings, and oil control rings.
• Top compression rings are barrel face to aid heat transfer between piston and cylinder wall.
• Second compression rings use a reverse torsional taper face to promote side sealing and improved oil economy.
• Reverse twist combined with a taper-machined ring face duplicates the OD bottom-side scraping edge for effective scraping.
• Oil control rings are a three-piece flex vent design, providing uniform pressure through four steel rails and two expanders for positive oil control.
• Includes enough rings for two pistons; two rings per groove, except for rails which use two rails per one expander ring.
• Made in the USA. 🇺🇸

Important: 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.

Kit includes:

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