The Biggest and Best QMB139 Big Bore Kit

This is the complete parts list to the biggest and best QMB139 (GY6 50) Big Bore Kit solution available today. Only uses HIGH QUALITY Naraku and SSP-G Taiwanese made parts for the best possible build for your QMB139 powered scooter.  Choose one of the Naraku HD crank, or the SSP-G Stroker Crank.  With the Naraku crank, the kit will displace 88cc, with the SSP-G Stroker, the kit will displace just over 94cc!

The SSP-G Roller tuning kit will allow you to figure out your optimum variator setup, and then go ahead and get that weight from the super high quality Dr. Pulley options.