50cc QMB139 4-stroke 47mm, Cylinder and Head Kit. Upgrades to 72cc! Kit includes complete cylinder head, cylinder, piston, rings, piston pin, cir clips, head gasket, and base gasket. Upgrades to 72cc Cylinder Bore: 47mm Cylinder Sleeve Outer Diameter:...
Regular Price(MSRP)
$107.00
Season Special
$79.99