I think the ride quality has improved.
● Mounting parts: Floor crossbar
I couldn't say that my car was very comfortable to ride because it was pushed up from the rear when passing through a step, probably because of the suspension of an external product that had been attached since the car was delivered.
However, after the introduction of the floor crossbar, the push-up became gentler, and I think that the ride quality was improved by hitting it differently from the front.
It is a highly recommended part.