Well, I used it last year on my old CR and the results were really good. It is a VERY labor intensive process and most people want quick results. The instructions are pretty good on what gtits to use. FOr the deep gnarly scars use 220. From there go to 400 and then to 600. the key is that the plastic has to be wet sanded and take your time. Follow the instructions to the letter. I doubled what they recommended as for as number of coats. It took me a good 2 weeks to finish the work but was pretty happy with the results. But if you can still buy new plastic, I would recommend doing that instead. It's hard work and gas, simple green and other detergents ruin it. It is a great product of vintage/older bikes where new plastics can't be bought... but for newer bikes, new plastic are the way to go...