GS550 header?

[steve murdoch]

I am tryng to identify a 4-1 header that was sold as a GS1000 pipe. It is too small. I think it might be for an early GS550.
Can someone measure a set of stock pipes or 4-1 header for their GS550.

[Gyi2os]

I'll try to take measurements when i get home, 81' gs550

[mike_of_bbg]

Measured the old pipes off my 82 gs550L. The 13" outside 1 -> outside 4 is right, but my pipes are 1-3/8" diameter (plus the flange adds another 1/4" dia I think). Also, the distance outer 2 -> outer 3 is just under 6", so a bit closer than what's there.

Might fit with a bit of bending Not sure about the pipes fitting, either.

[steve murdoch]

Thanks, Mike.
The mystery continues.

[Suzuki_Don]

I am tryng to identify a 4-1 header that was sold as a GS1000 pipe. It is too small. I think it might be for an early GS550.
Can someone measure a set of stock pipes or 4-1 header for their GS550.

Steve I have taken the measurements on my '77 550 headers (4-1). See attached pic. This header also fits the 650 head ports exactly. So I would eliminate both the 550 and 650 motors from your list that these headers will fit. The overall width of my headers is just a touch over 12" as you will see by the pic. When measuring the header pipes on the standard exhaust I believe the pipes can rotate in the collector, so on these the measurements could vary if not careful. As I said mine are a 4 into one system. Hope this helps.