Hi all I've asked this question of Givi, who said "The E41 panniers are only a pannier we do not recommend that you use it as a top box as this is not what it is designed for. You will need to purchase a top box and the specific monorack." However, I'm sure I've read somewhere on here that someone used an E41 pannier as a topbox with an appropriate bracket. Has anyone done this? I've got a pair of panniers but they're too wide to use when filtering into work, and it would be great if I could use one as a topbox to save some cash. Any ideas? Digi