Hard chrome plating of old fork tubes

The hard chrome plating on fork tubes on older motorcycles often have scratches or rust pits that damage the seals, causing the fork to leak oil.

At RestoMetal we have the ability to restore the fork tubes to like-new state.

The process is as follows:

  • Remove the old chrome layer chemically
  • Grind the tubes down on a cylindrical grinder until all the damage is gone.
  • Apply a thick layer of hard chrome, so the fork tubes are oversized.
  • Grind the hard chrome layer back down on the cylindrical grinder until the fork tubes are back to original size.

Because the damaged steel layer has been removed during the first grinding operation and replaced by hard chrome plating, the hard chrome layer is a lot thicker than on the original fork tube. Typically factory fork tubes have a layer thickness of around 10 to 15 microns, while tubes restored by us are typically between 100 to 150 microns of layer thickness.