If you prefer, buy a product designed for cleaning dirt bikes. These are designed to wash metal parts of your bike as well as to lubricate them. If you’re just focusing on polishing the plastic, however, you probably don’t need a special product.
Submerge the sponge in the soapy water frequently, so you’re not rubbing a dirty sponge across the bike, which can scratch it.
You can use a pressure washer on the bike, but be careful using it. Avoid spraying the chain since the pressure can trap dirt and water in the chain.
Always be careful when you handle sharp blades. You might find that it’s easier to use a blade that is sheathed in a blade holder.
Keep working with the 220-grit sandpaper until the deepest scratches fade a little. If it’s easier to hold, use a sandpaper block instead of sandpaper sheets.
Dip the sandpaper in water frequently so it creates a smooth finish.
Feel free to use an even finer sandpaper if that’s what you have on hand. Try polishing the plastic with 800 or 1000-grit sandpaper, for instance.
Use a high-powdered drill so it rotates quickly and buffs the plastic to a high polish.
Wear eye protection and use caution when you work with the power drill. Avoid holding the buffing wheel in 1 spot for too long because it can heat up and melt the plastic.
Switch to a smaller buffing wheel to polish curved or hard-to-reach areas.
The polishing compound gives the plastic a little extra shine and can provide a layer of protection.
