I recently purchased a 1995 xr600r which is in great shape. The seller had had the bike serviced and the dealer installed a new set of factory original sprockets (14:48)and chain. I would like to gear the bike down as I use it mostly for tight trails and woods riding and I am six foot 240 pounds and almost 40years old. What would you recommend? I am thinking of going to 14:50 or 14:52, but I don't want to get so low that first gear is useless. I also do not want to run into any clearance problems. My original thought was to go to a 13:48 but the local guru says that is not an option for me? Thanks for any help. I am sort of a born again newbie, as i have been out of riding for nearly 15 years. Also after today this sprocket/chain set has 73 miles and I am considering only changing the rear sprocket.