General topics » 2020 R1250RS _ header coloring

Sorry if this has been asked and answered. I have a new 2020 R1250RS and I am just breaking it in. It has about 250 miles on it and for the most part I have been keeping under 5000 RPM with and occasional extra twist on the throttle. That said, I noticed today (view from sitting on the bike) the right side header has developed a golden bronze coloring almost back to the foot brake. The left side header has the similar coloring, not as dark, but barely makes it past the bend of the header.

Is this a sign of on cylinder running richer than the other? Is this normal for the bike. The coloration on my last R1200S had almost symmetrical coloration of the header.

Thanks for your input!

From my experience (3 x RS) with chrome headers that’s pretty normal. Certainly with the 1200s the bronzing / blueing was uneven side to side. Same seems to be the case with the 1250.

The heat discolouration differs due to the offset of the cylinders which in turn gives a slight difference in geometry on the bend of the exhausts on each side, absolutely normal on all boxer engines.