I had recently built a Powroll XR218 motor and I picked up, via a middle man, a heavy duty timing chain along with other parts for the build. He called it a "heavy duty racing chain." I have searched all over the web and can't seem to find anything about it. It appears more "heavy duty" as the links are not "peanut" shape but more "Oval track" shape. This heavier chain I hope would last a little longer as it seems that about every used XR200 needs one. You can see in the picture, the chain that is hanging on the cam is the stock, and the larger "heavy duty" chain is installed. Any ideas where to buy this chain from? or even what brand it is?