Ok here's the update, turns out it was the coil!! Put two new ones that I got from EuroMoto Electric and she runs tops again!! Think it was the right side because that plug was totally gone the tip was off.So the coil had to work harder to jump the big gap ,and it probably burnt the coil out.Funny ...

Hi Stu, no I don't know anyone with a spare set of coils to try.But I do have some old good ones from my Boxer cup replica that I can try They are alittle different but they might go on.Yeah I am puzzled why no codes or dash warning.

Ok hi everyone, I changed the plugs,and you guys are correct one of them the left cylinder the center electrode was almost completely gone! These bike do eat plugs,must be the high compression or the swirling cubustion. So I didn't think the plugs alone were my problem, the bike is still sputtering ...

Ok guess I will have to change them, just seems weird that they would have the effect that I am experiencing. Its almost like the ignition is turning off at 4000rpm and she cuts in and out.But no dash warning or mil light. Going to see with my moto scan app if there are any codes.I was hoping ...

Hi all ,I am new to this site.I have a problem with my 2020 R1250RS, she started sputtering really bad at 4000rpm almost like some one stuffed a potato in the tail pipe.Seems maybe related to when she reaches reserve.She has 20k miles on her and has been flawless until now.I don't believe it's the ...