GSXR Muffler Seal Ring
If you are adapting a GSXR or Hayabusa muffler to your DR650 you will need a fresh gasket that seals between the muffler and the mid-pipe adapter.
There are two sizes depending on which OEM muffler you are using.
The 4-bolt mufflers use the 2-1/2″ OD seal ring.
The 3-bolt mufflers use the 2-3/4″ OD seal ring.