PFR5-1104 is a complete bush. It fits later Gen1 models from 2003 onwards with a diameter of 60mm, for the earlier models with a diameter of 80mm use PFR5-1105. For inserts use PFR5-1102 which fit...
PFR57-106 has been designed to replace the rear trailing arm front bush where the arm locates onto the chassis. These bushes are no longer available from Porsche unless you buy the complete arm at a...