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Continue to ChatPiston and Ring Set - 47cc, 49cc, 40mm, 10mm (6pcs) - 30P8410 - PBC1644F1 - https://www.powersportamerica.com/express-parts-catalog/engines-parts-upgrades/piston-and-ring-set-47cc-49cc-40mm-10mm-6pcs-30p8410-pbc1644f1