This is a rear strut tower bar type 2 with an oval shaft shape. A pillow upper mount is required for installation. The combination of the rear pillow upper mount and the rear tower bar greatly improves the weak point of the rear suspension, which is the lack of rigidity of the body due to the configuration and shape of the rear suspension, making the rear behavior unstable. These two points are directly connected, and of course the body rigidity is increased, but the pillow upper has a structure that allows the damper's performance to be fully demonstrated. In the case of genuine, the rear damper is fixed to the body at one rubber bush mount. This mounting method has the same structure as box vans such as the Stepwagon and Stream, and since the initial movement is limited to one genuine rubber bush, it results in an extreme lack of rigidity, making the initial movement slow and bouncing up and down, and even when a damper with reinforced height adjustment is installed, the movement is suppressed, and the road conditions from the rear tires are not accurately conveyed to the driver. By installing the rear pillow upper mount and tower bar, the body rigidity is increased and the pillow upper mount fixes the damper to the body, so you can feel the initial movement of the damper without any loss, and you can get 100% of the damper's performance, from genuine dampers to height adjustable dampers.
It is introduced on Ameblo's "M&M HONDA's Honda Honki."
https://ameblo.jp/mandm-honda/entry-11803652494.html