Motorcycle engine guards help to protect the heart of your motorcycle from damage in a crash or from damage in a parking lot tip over. Cruiser riders call them highway bars and some call them engine crash guards. Either way they will add just a bit more protection to your ride. If you're thinking about participating in a track day it's a good idea to get some extra protection with some engine cover protection to keep your case intact should you ever lowside into a long slide. You're wearing a leather suit for abrasion resistance might as well get similar protection for your bike.