Carbon Fibre Subframe infill for your YZF. A neat lightweight moulding to close in this area of the bike. Only available to the GP teams so far this part protects the cables and connectors, prevents this area filling with mud, and stops the top of your boot hooking up on the subframe. Kemea Yamaha's Valentin Guillod, Benoit Paturel and Brent Van Doninck wouldn't be without them.