I've used the foamy throwaways for years and years. As posted by others, get the highest NRR rating you can get and use 'em anytime you're going to be on the bike for more than 10-15 minutes. An absolute must for ANY road trip on ANY bike, even with stock exhausts. Take along 10 sets on your road trips and change 'em every day. Light and easy to pack. Cheap insurance, IMO.