Restoring inner guard liners?

Hi all, I have my front guard liners out while I do some other work and was wanting to try to restore them as beat as possible without buying new ones

Has anyone done this? Can they be brought up to scratch easily? What's the best method?

Cheers

AB

 

They seem to be only US$60 each so probably easier to replace.

Courtesy Nissan link

 

Cool, will have to give that a try after a scrub and a quick cleanup with 600 grit to remove the dags

 

Try some Simple Green and a REAL good scrub. It took my guard liners from being matte grey to the original shiny black.