GY6 Big Bore Kit, where to find?
 

What is the best big bore kit for 150CC Gy6 engine?

I see so many on ebay and Im confused.

Do you know anywhere online that sells complete engines ready to go with bore kit and upgrades?

Thanks!

I can't tell you about ebay vendors, but the wholesalers that I use have mostly Taiwan made kits.

just bought my first two 2 stroke 72cc kits, Kymco unit came from Taiwan, the TNG unit from GY6 store.

All the 139qmb BBKs are from Taiwan- have checked vs China and they are very similar, but the Chinese units weigh a little less-- totellit youneed a very accurate weigh scale.

If you want a prebuilt drop in, why not get yourself a 150cc core unit, BBK the engine,bench tune the cvt, change the fluids, and then swap it out. You'll know what is in it and what it should do.

http://www.partsforscooters.com/ maybe.

check out our website for all gy6 150cc big bore kits


http://www.drowsports.com/taida-gy6-...-54mm-spacing/