Had a zipper lock jam on me on a recent trip and had to break it to gain access. Filed a claim with Triumph and they sent me out the updated (25l) panniers. Main differences are: the zipper lock is now at the front of the bags and the zippers are solid metal (previous gen had a plastic insert in the zipper), the dry bags (with closable air valve/vent) are built into the pannier itself via zipper, and they are slightly larger (obviously). Thats all I could tell. Obviously no more zippered mesh compartment, since the whole bag interior is now a dry bag. Same weight rating, same mounting mechanism (i even swapped mine from the originals instead of trying to swap the lock mechanism to the new ones). Hopefully these last longer than the previous model.