I have the 33 L with no top case, and I use the Givi racks. On the exhaust side, the bag sticks out approx. one inch further than the right side bag. I tend to like things very symetrical, so the extra inch is not that bad if I can stand it. I think the Givi racks give the tightest fit for these bags out of any other set up. Plus, the givi racks themselves can be removed in a minute or two with the supplied tool if you desire a clean look. The trekker bags are fantastic. Mine don't leak so I probably have a later production run? I love how fast and extreemly easily they can be removed and mounted, and you get 4 like keys, two per bag. It is a great set up. I also like the optional way they open up. You have the ability to set it so just the top part opens for quick access to small items. The silver sides do get dinged pretty easily, but it's just a metal outside panel for the ADV look, it's plastic underneath.