The stock sprockest are 14/49 on a 99 WR400. Has anyone tried to put a 15 on the front? It seems a little tight up there, I am not sure aboue clearance, so I thought the best way to gear it up a little was to drop some teeth in the rear. I just am not sure how many to go. The rear I currently have is a 50 tool with a 14 in the front. I want a little more top speed so I was thinking of going to the smallest rear they make, which is a 46, but I don't know if that would be over kill. Anybody have any experience messing with sprockets to re-gear their bike?