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Amazon.com: GOOFIT 39mm Piston Rings Kit Replacement for GY6 49cc 50cc 139qmb Taotao Jonway Scooter : Automotive
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MVT PI02 - DERBI E2 E3 Piston 50cc - MVT S-RACE - 12mm Piston Pin - Diameter 39.85mm - Piston Rings 39.90x1mm
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MVT PI15 - PEUGEOT 103 G1 G2 G3 Piston 50cc - FOR MVT S-RACE HM33 - 12mm Piston Pin - Diameter 39.96mm - Piston Ring 40x1mm
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