The HB/Tourtech racks add a substantial amount of strength to the subframe...
Gunner, interesting comment, must be why my sub-frame is still in one piece without any bracing. I did break off the bolt on the top frame rail shown in the above picture.
Drilling it out was darn difficult as I believe the Touratech/Zega mounts use grade 8 bolts. All the pannier mount bolts routinely loosen and need to be retightened constantly when on tour.
'02 KTM 640 Adventure-lowered
"On the road there are no special cases."
Cormack McCarthy-The Crossing
The faster it goes the faster it breaks.
And high performance=high maintenance.