BMW E90 / E92 / E92 M3 / E81 / E82 rear subframe mod kit will allow you to adjust rear grip level by changing the position of the #7 arm. This setup requires some modification and welding to the OEM subframe (FD legal).
NB! This mod kit is not suitable for low power cars and may limit the wheel travel with extreme setups.
NB! This mod kit works only with the latest Wisefab BMW E90 / E92 / E92 M3 / E81 / E82 rear suspension sold stating from Dec. 2019.