Cylinder kit 50cc KB=13mm for GY6 China scooter, Kymco 4-stroke, 139QMB/QMA BT27364

Replacement cylinder kit with 50cc displacement and 13mm piston pin suitable for all 4-stroke scooters from China that have the so-called 50cc GY6 or Kymco 4-stroke engine (139QMB/QMA) installed.

The kit contains all the necessary individual parts and gaskets.