Graves Motorsports Carbon Fiber Engine Guard Case Cover set. These feature six layers of carbon / twelve layers of Kevlar weaved together that overlay onto the stock magnesium case covers adding protection and style to your sport bike.
When protection matters, not only do these look good, they are designed to protect your motorcycle in the event of an accident.
Engine covers are now being mandated by most racing organizations across the U.S.A. (Moto America, MRA, CCS, WERA, AFM, etc.) - Check your rules for specific legality.