What's the difference between the left and right crash bung? My left one is rashed, so I figured I'd replace with a slightly rashed one that I took off the right side 2 years ago. But then I saw that they are sold as a RHS or LHS.

Probably to do with the mounting bracket being mirrored. Actual bung itself should be the same, I'm guessing.

Uppers are same length it's lower ones that are different.

They are sold as "replacement" sliders; a bung and a bolt.

http://www.ktmtwins.com/r-g-ktm-990-sup ... er-sliders