Hi all, I installed a tool tube on my 630 yesterday. I took an idea from a KLR forum and used an owners manual tube that I bought from an agricultural supply company: http://www.agrisupply.com/manual-canister-large/p/67670/ I installed it at the same time that I installed the Nomadic Racks subframe braces and re-installed the passenger grab handles that the prior owner had taken off. I made a couple of 4 X 1" aluminum brackets that I attached to the right side exhaust mount and the rear-most attachment for the subframe braces. Hopefully, they will prove strong enough (my tool roll weighs about 4 pounds).
Nice. One of the reasons I want a single exhaust, so I can use that space on the right for something like this.
Can't tell how you have it mounted but be aware, the plastic mounting tabs are known to snap off those tubes. Some use hose clamps around the tube to mount. .