Since the interior wall fits so closely, we can keep the saddlebags narrow and carry the shape around the rear fender. This keeps weight bearing close to the centerline of the bike which helps to maintain a good center of gravity. When loaded properly, you won't even know they're back there while you're riding and the bike remains stable at all speeds. These bags were designed by the same guys that ran Hayabusa saddlebags over 180 mph on the Bonneville Salt Flats.