Shorter right rear 4 bar

[2rs]

I,ve been seening cars with bolt in brackets on the lower 4 bar on the right side, I guess my question is what is the shorter bar doing?

[JustAddDirt]

RR bar

I am assuming you are seeing it on a MasterSbilt. They have a different 4 link bracket on the
Gen X cars. They bolt on a shortner bracket on the bottom bar to make it a 15" bar, which is a standard bar length on there Smack car. If I am remembering correctly.

[SLM98]

A shorter RR lower bar will speed up indexing of the birdcage and tighten entry.

[Matt49]

Standard lengths for a Smack car are 15.5 bottom and 17.5 top. GenX is longer in the brackets welded to the frame.