2008-2010 Kawasaki KFX450R Factory Service Manual, Page 200Get this manual
ENGINE TOP END 5-39 Muffler WARNING
To avoid serious burn, do not remove the muffler when the engine is still hotWait until the muffler cools down
Muffler Removal
the rear exhaust cover bolt [A] Removethe muffler joint clamp bolt [C]and cover [B]Loosen
Remove: Pipe Holder Nut [A] Exhaust