He rides a 1150GS
Nobody makes aftermarket headers for the R1150GS, so your only choice is original BMW
New ones are £400 for a pair
Gs point, Akrapovic indeed do not. However, I vivdly recall a thread here from Bilco trying and helping Keihan to develop some. Not sure where that went, but I can find it. Its from a couple of years ago.
Also I have seen a couple of bikes on the road with non standard ones, one belonged to my old neighbour. They (the headers) looked very trick - titanum possibly - and they were on an 04 GSA with a Remus end pipe. I ale=ways though they were Remus, but i can't se anything on their website, so perhaps you are right.



