The Beatrush Rear Mount Bar for the Scion FRS and Subaru BRZ will help firm up the rear differential mounting, providing better traction.
Fits:
Scion FR-S Beatrush Rear Diff Mount Support Bar
Scion FRS Beatrush Rear Diff Mount Support Bar
Subaru BRZ Beatrush Rear Diff Mount Support Bar
Toyota GT86 Beatrush Rear Diff Mount Support Bar