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.
This gasket seals the joint between the head pipe and Exhaust port. These gaskets are designed to crush a little bit to tightly seal where the pipe fits to the head. Get a fresh one now avoid having an exhaust leak when you install your new exhaust.
This gasket seals the joint between the head pipe and muffler. These gaskets are easily damaged when removing the original muffler. FMF mufflers do not require a joint gasket but the all other aftermarket mufflers as well as the stock muffler require a joint gasket. Get a fresh one now to ease installation of your new performance muffler.
