no mods required to bike just lots of triming to the fender. there are some ribs on the top of the fender that you gotta trim and of course you gotta notch it for the pipe. i drilled a hole in the air box and installed a bolt with rubber washer for the lower attach point since it wont hit the air box mount screws. i will post picture when i put a new one on because i almost looped it yesterday and cracked the fender over half way though the with so its alittle floppy at the moment.