Understand this: Even though the Adventure luggage—available as 37- and 45-liter side cases and a 37-liter top box—seem to mimic the old bags’ general shape and fit the same quad-pin mounts, there’s almost nothing here that’s gone untouched. For starters, all the plastic corners are different, not just restyled and strategically fitted with handles and slots for lashing other bags to them, but now they’re protective only. Before, the plastic was part of the bags’ structure, but now there’s aluminum all the way around, so if you drag the plastic across a rock and crack it you won’t breach the bag. The X-shaped styling elements on the outer faces and tops of the side cases are also to give the box improved stiffness. Finally, the plates that mate to the bike-specific racks are reinforced to better handle abuse.