Improve rear grip, better launches and 60ft, more stability in corners with the subframe bushing shims. Easy installation.
The bushings in the rear subframe are soft and have large voids on either side allowing a lot of flex when under acceleration and cornering. These easy to install shims fill those voids and provide stability without adding the harshness and noise of solid subframe risers.
30-60 minute easy install.
These are NOT the same as rigid collars. Install is almost the same as rigid collars though. The shims are inserted into the bushing