• 150cc 157QMJ GY6 4-s


    The GY6 engine is the 150cc version of the 157QMJ GY6 engine 152QMI. Most components of the engine 157QMJ are identical with the components of the engine 152QMI. The difference lies in the bore of the cylinder. The cylinder bore is in the 152QMI 52.4 mm, 57.4 mm at the 157QMJ.