*Cylinder Kit for Coolster Mountopz 150cc ATVs Go Karts 57MM 

Complete GY6 150cc engine cylinder rebuild kit. This kit includes 57mm piston, rings, cylinder, all gaskets, clips and piston pin. This replacement Chinese ATV Part fits 150cc ATVs, Go Karts, and Scooters equipped with the 150cc GY6 style engine.

IMPORTANT NOTE: THERE IS TWO VARIATIONS OF 150cc CYLINDERS USED. Match your cylinder with the picture below and enter notes in the comment section when checking out which cylinder you need. The bolt patterns are different on these two cylinder jugs and they WILL NOT interchange. The gaskets used are different also. ALL use the same 57mm piston and rings.

There is a FREE top end rebuild guide for the GY6 engine located in our Chinese ATV Repair Manuals section.

IMPORTANT! Again double check the picture below to order the correct cylinder kit and enter notes in the comment section upon checkout. CHOOSE LEFT or RIGHT JUG

THIS KIT WILL NOT FIT KAZUMA 150cc--see Kazuma 150 engine parts section

WILL NOT FIT DIRT BIKE VERTICAL ENGINES WITH MANUAL CLUTCH