Originally Posted by
350for350
I have no idea about the quality of that kit. Maybe it's good, maybe it's not. Here's a few things to keep in mind. I've seen a lot of people say that they've had bad experiences with buying things from Mr. Twisted Wheeler. His reputation isn't great. In the description of the lit you listed, he says that his piston is 10.5:1 on compression. Fine. Then it says that stock compression is "9-8-1". I assume that's supposed to mean that the stock compression ratio is 9.8:1, but that's wrong. The stock compression ration is 7.8:1 and it even says so right here on the home page listed in the Honda specifications. Next it says that this kit will not fit a ATC200X, but doesn't list a reason why. I know that it won't work on a '86/7 200X, but I don't know why it wouldn't work on a '83-'85 200X. With all of this in mind, I, personally, would steer clear of that particular kit. On fact, I would buy the next oversized piston and have your current cylinder bored to fit it.