Custom Big Bore Engine Cases for GY6 150 Long Engine. They are bored to fit up to a 63mm Performance Cylinder Kit. Go big. 
Cases are matched Right side and Left side, and stamped with a serial number to make sure you have a perfectly matched set.
Check out the following Cylinder Kits that will work with these cases on a GY6 150 Engine:
57.4mm Cast Iron 
59mm Cast Iron 
61mm Cast Iron 
63mm Cast Iron 
58.5mm Ceramic 
61mm Ceramic 
62mm Ceramic

CM- 1100-1418

Custom Big Bore Engine Cases for GY6 150 Long Engine

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