I have a 2003 WR 450. I have had the bike for some time now and mostly ride the bike on trails and desert. I have recently added dual sport equipment and have done some dual sport riding. My gearing/sprockets are stock with a 14 front and 50 rear. I am not necessarly looking for more top end but would like to reduce RPM while riding at highway speeds of 50-60 mph. Any suggestions are appreciated.