Nissan S13 Rear Suspension Drop Knuckle KitThe new and unique design for the toe arm. We now call it to "compression arm" as it compresses under a hard hit. This helps to reduce possibility of damaging the subframe, knuckle or the coilover. NB! You can also upgrade your pre 2021 Wisefab S13 rear suspension kit to new toe arm design by purchasing "S13 Rear Suspension Mod Kit". The new camber arm has been part of this kit already for a while but it's still worth mentioning that the "double