
The Cusco Type RS limited-slip differential is a 2-way unit offered with 1.5 and 2 settings for rear installations on Subaru WRX platforms referenced as GDA/GGA and later BR9/BM9 models. It’s presented as a rear LSD solution for those applications, providing selectable two-way behavior for improved traction characteristics under a variety of driving conditions as specified by the manufacturer.
Cusco LSD RS 2way (1.5&2) Rear GDA/GGA WRX BR9 BM9