TSS FAB XXXL Rear Trailing Arm KitOur XXXL Trailing Arms are around 9" longer than stock giving you the best rear suspension geometry possible. By moving the fulcrum of the trailing arm forward, our XXXL arm produces more suspension loading under acceleration, and also provides more stability under harsh road conditions. If you are ordering XXXL Trailing Arms with a T Bar or Geometry Special kit, you DO NOT need to add trailing arm mounts as they are included with those items by