race fenders kinda just boil down to personal prefference. to give your bike a more sporty look obviously. the pictures that have been posted already kinda represent race fenders. some people cut their fenders down so that they are really short like a few inches wide so that they stop right at the top of the rise in the fenders. go for what you think looks best and be creative. start with tape. i cant even explain how much tape saved my ass because if i just went in there cuttin my fenders would look nothing like they do right now.