ebay link below
The parts for sale are both the Left & Right Side Covers (which are also called Knee Grips) for a 1989 750cc Kawasaki Ninja. They are the panels that sit next to carbs. They are in good condition, and don't have any breaks or severe damage. They came off a bike that was red in color, and do not appear to be faded.
1989 750 - Kawasaki Ninja - Side Covers(Knee Grips) L&R