Vintage used chrome expansion chambers for Suzuki T500 Titans w/head pipes. These are stock head pipes with after market expansion chambers. I don't remember the brand and there is no markings on them. They were on a 1970 T500, but all years of the Titan use the same exhaust. These chambers mount in the same place as the stock exhaust below the foot pegs. They are in very good condition for their age and have just a couple of scratches but no dents. It looks like some acid drips fell on one of the pipes causing some discoloration. One of the four mounting brackets has a chip out of it and it is missing one of the sir-clips that holds the baffle in. I only have one of the two head clamps that come with it as pictured. These pipes had a nice tone to them and I have to think are very rare as they probably never sold many originally. Please email me with any questions.