2 Stroke Big Bore Kit 10mm Wrist Pin 70cc Scooter Minarelli Jog 1E40QMB

My son said it was perfect! Quality product!

Perfect casting and porting. Upgrade from the 50cc to this power making cylinder kit for the Yamaha Zuma 2t

Easilly added alot more torque. Took about 30 min. To install, came with everything needed and left me extremely satisfied. Id give it 5 stars but the ports werent filed very well. Still amazing deal for the price paid.

was obviously made of less than average cast. within 4 weeks of installation piston walls were scored and rings lost considerable amount of compression. My fuel/oil mixture was right on the money the entire time. i monitored it because this was the second one ive bought one. i wanted to make sure that the problem wasnt on my end

Installed easily although ring broke at 90 miles. Was impressed with added torque and speed for the short time it ran need new piston and rings to get back on road

Good design but bad materials.But for the price its expected. I'll probably just run it.

Did not have clearance for my oil pump, so when I bolted it down it cracked the pump. It is easy to file the cylinder down so there is no interference. Just beware if you own a 2 stroke yamaha vino with oil injection. Check before you bolt it on!! Otherwise, runs great.

works great.will buy more when I need them,Great sell,Fast shipping