Perun moto 790/890 Luggage rails were designed as a platform for small bags or Tool tubes. In several months of use, some bags proved to work great – Kriega US-5 Drypack, Mosko moto Fatty Tool roll and 4l Drybag. Standard size Tool tube proved to work great too. Of course, lot of other small bags will work great, but these are tried and tested.
Rails are designed to be as versatile as possible. If stock grab handles are used, best option is to install L-shaped brackets in the front and middle position (Note: we used to provide flat brackets for LHS, but we decided that L-shaped brackets works better, so now we include only L-shaped brackets, both for RHS and LHS). If stock grab handles are not used, rear and middle position of L-shaped brackets proved to work best.
It is also important to note that straps can be inserted in several ways, but here is what worked best for us.
A picture is worth a thousand words, so here are several examples.
WITH STOCK GRAB HANDLES INSTALLED
Perfectly sized and very durable bag. Strapped to the Rails using generic tie-down strap. Sitting or standing, there is no interference with the rider in any situation.
This 4l dry bag came as part of Aux Pox - 4L. Again, it is strapped to the Rails using generic tie-down strap.
My favorite tool roll. L-shaped brackets prevents it from sliding down, no matter how heavy it is. And again, it is strapped to the Rails using generic tie-down strap.
WITH STOCK GRAB HANDLES REMOVED
C. Tool tube
Tool tube can be mounted directly on the Rail base, no need for L-shaped brackets.
When stock grab handles are removed, all these bags (and Tool tube) fit great under the large rack-less systems, like Mosko moto Reckless 80 or Giant Loop Siskiyou panniers, acting as a perfect stand-off, pushing the sides of the bags away from silencer or swing arm. More details on how Reckless 80 fits with Rails - here.