I just put on a 15 tooth on my 86 200x, and it actually runs alot better with it than the stock gearing. The sprocket they ordered fit the shaft, but i had to grind it down so that the ring clip would fit in the groove. So It must have been for a 250r or another honda model. So I take one link out and its not enough, put one in and its too long. Even on full adjustment its just too long.
So now what are my other options? Would a 14 tooth give it enough tension to tighten up? Oh and my gearing is 15/38