Hoca QMB139 52mm Piston Kit, Part #169-380 -
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Hoca QMB139 52mm Piston Kit, Part #169-380

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Hoca Piston Kit for the 50cc QMB139 4-stroke 52mm, Racing Big Bore Cylinder Set. Piston Outer Diameter: 52mm. Total Piston Height: 34.8mm. Compression Height: 17.3mm. Wrist Pin Diameter: 13mm. Wrist Pin Length: 36mm. Includes piston pin rings and circlips.

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