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The Wiseco 104.191mm (4.102 in) top piston ring is a replacement part for Wiseco 4‑stroke pistons, offering compression sealing and oil control. Built to Wiseco’s specifications and tested for race‑ready performance, this top ring is intended for use when matching Wiseco pistons or during engine rebuilds that demand exact 104.191mm ring sizing and consistent sealing under load.
Wiseco 104.191mm (4.102inch) Top Ring Ring Shelf Stock
