47mm QMB139 Cylinder Kit

Description

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Item Description
50cc QMB139 4-stroke 47mm, Performance Cylinder Kit. Upgrades to 72cc!
Kit includes cylinder, piston, rings, piston pin, cir clips, head gasket, and base gasket.
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Warranty & Returns Policy.
*You may need to modify your engine case to accommodate the larger cylinder.
Upgrades to 72cc
Cylinder Bore: 47mm
Cylinder Sleeve Outer Diameter: 52.7mm
Wrist Pin Diameter: 13mm
Total Piston Height: 34.4mm
Compression Height (from center of wrist pin hole to top edge of piston): 17.25mm
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Not all replacement or upgrade parts come with instructions. It is the customer's responsibility to have common knowledge of installation or hire an experienced installer. We are not responsible for any damage that may be caused by any of the items we sell, whether installed by you or a professional. We are not required to provide step by step instructions or technical support. In any case, we will always do our best to help you with any technical question you may have.
Electrical parts are none returnable and buyer assumes all risks.
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