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50mm QMB139 Big Bore Cylinder and Head Kit

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50mm QMB139 Big Bore Cylinder and Head Kit

50mm QMB139 Big Bore Cylinder and Head Kit

SKU QG.00663 169-518 Category Tag

50mm QMB139 Big Bore Cylinder and Head Kit

QMB139 50mm Performance Cylinder and Head Kit. Includes cylinder, piston, piston rings, wrist pin, cir clips, complete cylinder head with 64mm valves, exhaust gasket, intake gasket, and cam chain tensioner gasket.
When used in conjunction with your stock crankshaft the displacement comes out to 82cc.
Please note: replaces Cylinder Heads with 64mm Valves (Short Valve Style). Please see Related Items if you need 64mm rocker arms.
Please see our Warranty Returns Policy.

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