Step 1:
Here is front pulley guard that was painted by PO and this is what it will look like under the clear coat after stripping the paint.

Step 2:
Wet sanded with 220 grit to remove all blemishes in the aluminum and you can even remove some of the lighter scratches.

Step 3:
Wet sanded with 400 grit...

Step 4:
Wet sanded with 800 grit...

Step 5:
Wet sanded 1000 grit...

Step 6:
Buffing wheels on old bench grinder with the guards removed and polish from
WW Grainger. Cost of wheels and polishing paste about $25.00.
Buff with the black compound and wipe clean then buff with the red compaound and finish with a good sealer wax. Use a dremmal tool to get in the small places.
Very important.... after riding in the rain clean ASAP or the finish will oxidize.