Anyone tried any of Yuminashi's bore kits for the Grom? Going through their site I see they offer a light bore to 150cc ($270), big bore to 180cc ($307) and a super to 200cc ($307) .::: YUMINASHI GLOBAL OFFICIAL WEBSITE - .::: MSX125 / Honda GROM CYLINDER KITS
the light bore 150 can be used with the stock head and valves, the 180 kit needs Yuminashis own larger head but will work with the Groms stock crankcase, while the 200cc kit requires a new Yuminashi head and crankcase...
something I would be interested in experimenting with, just never played with the bore on a bike motor before. Any input would be appreciated!

the light bore 150 can be used with the stock head and valves, the 180 kit needs Yuminashis own larger head but will work with the Groms stock crankcase, while the 200cc kit requires a new Yuminashi head and crankcase...
something I would be interested in experimenting with, just never played with the bore on a bike motor before. Any input would be appreciated!