[Mirius]

Don’t confuse the Duke gen 2 with the Duke gen 1 or RC. Different air boxes, different implications and resolutions. Confuse them and you will create a mess that is difficult to resolve.

 

[Mirius]

I searched a bit, duke and rc has the same airbox part numbers in ktm partfinder, this behaviour is present on sister bike Dominar 400 aswell which has a compeletly different airbox


View attachment 56034
Blue is the stock tune

If you search more you will find over the life of the Duke there has been more than one airbox.

 

[Mirius]

Good point.

but it is kinda funny how they all display the same sinusoidal-wonk, isn't it.

I’d be surprised if they didn’t son.