does any one know if they make a kit to convert the exhaust on an f4 to an undertail exhaust

 

I'm pretty sure because of the way the swingarm and subframe are set up on the F4 that it is impossible to put undertail exhaust on. There would be no way to route the exhaust through

 

I agree with redbones

 

only way I could see it done is to put the 600rr swingarm on it(for the recessed area just behind the right rear set) and do some custom hacking to the battery tray and subframe...like cutting the brace that goes across under the rear seat and welding it into a hump on the subframe and chopping the battery tray to hell....or put a 600rr tail on it custom style but they just look way off on these bikes.