Footrest assemblies are vulnerable items, both for damage if the bike goes down and to wear from motorcycle boots continuously moving (as they should when pressing on!) over the wear prone areas.
They are difficult items to refurbish as the soft alluminium parts tend suffer abrasion beyond repair. The easiest way to make the footrest assembly look good again is simple - replace it with new components and fasteners.
This component and some of listed below may well end up in your shopping cart:
Add as many items as you wish to the same shopping cart, new touch down bolt 4357607D01 screws 02142051630214205203 & springs 0944818022 for example, and still only pay the same single fixed price shipping cost.
This component will almost certainly have other applications within the Suzuki model range; so, please check the part-number is right for your machine prior to ordering?