Tusk Billet Aluminum Case Saver.  Fits YAMAHA RAPTOR 660 Models From 2001-2005.

The Tusk Billet Aluminum Case Saver allows you to ride as hard as you want with confidence. Designed to keep your expensive engine case safe, the Billet Aluminum Case Saver is ready to guard in the event of a chain de-railing or breaking. The Case Saver is made machine specific and gives your ATV that custom look.
• Helps guard engine cases in the event of chain problems or breakage.
• Machined from 6061 aluminum.
• Includes stainless steel hardware.