Depends, on a bike that doesnt need it, no I would say its not worth the money. When you get into cub motors though, you damn right they are worth the money. They are a must on cub motors or you will go through clutches like crazy. I like em for that reason right there, saves your clutch, I dislike the regular ones because you have to get an expensive cover for them. I cant comment about the under stock cover lockups because ive never had one.