What is this part?

[bigboy]

What is called this and is there an aluminum or titanium replacement for it?

 

[Hayabusa Wannabe]

The large nut? It is quite light and I think it is AL Steering stem nut, some sites call it top yoke nut. There are colorful aftermarket versions.

 

[bigboy]

The large nut? It is quite light and I think it is AL Steering stem nut, some sites call it top yoke nut. There are colorful aftermarket versions

Ahhhh ok I see

 

[Bumblebee]

The large nut? It is quite light and I think it is AL Steering stem nut, some sites call it top yoke nut. There are colorful aftermarket versions

I kind of thought they were Ti but I might be mistaken...