f650gs exhaust cleaning

**KevOK** · #1 25 May 2008

Hi there guys,
Would anyone know how to clean the stains off the exhaust of 06 F650 gs
Much appreciated
Kev

**Cactus Bob** · #2 25 Jun 2008

A product called "Blue Job" out of the U.S. seems to work pretty good on discoloration ... maybe it will work on stains in general.

**endurin** · #3 1 Jul 2008

especially the right handside one of the exhaust cans tends to be discolored; get browny-yellowish by time. this (the right one of them) is the real working one, isn't it? I tried some solvents too,that would make no harm (!) to the metal, but nothing improved a bit. WD40 won't work, for instance. by the way, is there any relevance this change of color and the life span of the catalyser?

**Frank Warner** · #4 2 Jul 2008

This is not a stain. It is the natural colour that occures with heating. You can polish it out .. but the colour will return if you use the bike. So if you want to spend your time polishing rather than riding ..