re: Researching for the best motorized bicycle kits
Have a look in the "Find a Dealer and Review" forum here.
Most of the two stroke kits are pretty much the same with the accessory items being a little different from kit to kit. Grubee offers a lot of hype, but they have as many problems as a less expensive kit. thatsdax sells at a fair price and offers great after the sale service. There are a ton of others out there, and you will get as many opinions as there are kits.