This powder coated brace mounts between the lower tab of the rear sway bar bushing mount and the rear inner lower control arm bolts. This provides added rigidity to the factory sway bar mount which is prone to cracking, especially with an upgraded sway bar.
As the saying goes, you're only as good as your weakest link. Upgrading the rear sway bar and end links on your Subaru can create added stress on the factory sway bar mount. This bracing helps to triangulate and add strength to the lower mounting point of the sway bar mount.
Fits all 2008-2021 Subaru WRX and STI.