The Acerbis X-Grip frame guard serves a dual purpose. First, it allows the rider to protect the frame of the motorcycle from wear. As a frame protector, it keeps the bike in better condition over time. But the genius of the Acerbis X-Grip frame guard comes in adding a second purpose: grip. That's right; not only does the X-Grip serve as an excellent frame protector, it also makes it easier for a rider to hang on to the bike. As the name implies, itâ€s a frame guard that adds more grip for the rider. The Acerbis X-Grip frame guard is made from a dual-injected mold, and that's where the key is. The outer plastic is durable polycarbonate - that's what allows it to serve as an excellent frame guard. Meanwhile, the inner plastic is much more pliable (though still durable), and this is the piece that offers the incredible grip. Together, they create a frame guard that will make both bike and rider happy.