Here's my home grown solution to this little problem. The material is 5/64 inch aluminim alloy. The primary attachment point is the screw for the rear bodywork, with a length of safety wire from a hole at the bottom of the guard to the loop on the midpipe, and a high temp zip tie around the frame with a short length of electrical insulation to protect the frame from stratches. The lightning/cooling holes are 1/4 inch in a 3/8 inch grid. The guard is bent at the bottom to follow the curvature of the midpipe, and also from rear to front. Wasn't hard, but I burned the daylights out of my thumb holding the alloy with a welding glove while heat working it.