2007 YZ450 Exhaust question

[glenntat]

I just bought a used 07 YZ450f and I notice that the exhaust pipe gets cherry red when I am idling. The bike is all stock and runs great. Starts first kick. Is the cherry red exhaust a sign of something wrong with the valves or jetting? Does this happen on all 4 strokes?

[grayracer513]

https://www.thumpertalk.com/forum/showthread.php?t=236304

[Troutman]

https://www.thumpertalk.com/forum/showthread.php?t=236304

No picture? I love seeing the shopping cart ?

[nitro1max1]

mine does that too. I have the 07 all stock. No problem