2 years ago I purchased a LINMAX 110cc quad via E-Bay and I gotta say it hasn't missed a beat!

Its had an absolute flogging, being ridden by my wife and kids and I assure you they on't treat their gear gently!

I read all the reviews and comments on the chinese products being garbage and I have to say there not all bad!

Yes be carefull and don't buy it unless there is a warranty or better still buy it from a reputable dealer that specializes in bikes only and i'm sure you wont have any dramas!