I am ordering symmetrical pannier racks (Outback Motortek) because my soft bags are both the same size. The width difference is 2.5 inches from center of bike, on the lh side for the ones I'm getting (asymmetrical vs symmetrical). That extra space on the lh side will easily fit a nice rectangular tool box, and make the bike look even from the rear. It might be a bit wider, by inches, than I wanted, but I don't have any other choice unless I want to buy all new bags, which I don't.