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The Wiseco 103.429mm (4.072 in) top piston ring is a direct replacement ring for Wiseco 4‑stroke pistons, offering compression sealing and oil control. Developed and tested to Wiseco’s specifications for race‑ready performance, this top ring is suitable when matching Wiseco pistons or performing engine work that needs exact ring sizing and consistent sealing at the listed bore size.
Wiseco 103.429mm (4.072inch) Top Ring Ring Shelf Stock
