Here's what I'm using with a 300# DRZ400S. Superhitch with a double truss 32" extension coupled with a Tilt a rack carrier that is very handy (no ramp to store). Did LOTS of research, including multiple discussions with Torklift engineers, axle & tire calculations, etc... before diving into this and it works fine. It took 240# off of my front axle, which is slightly noticeable, but still drives fine.
In my research, I found this mod is debated just like putting a heavy camper on a SRW vs. DRW, some poo poo it, others think it's great. YMMV. :)
Tilt a rack carrier
