This is not necessarily a build. Like most of my bikes, I bought this one used from someone that was not the original owner and the bike was far from stock by the time it got to my garage.
I bought this in March 2017 from a high school kid in Fallbrook. The bike was a DRZ400S so it was the dual sport version in its original form. However, he (or someone else) converted it to a supermoto by giving it a set of 17 inch supermoto rims and tires, oversize front brake, and stiffer springs. It also included the original dirt setup, had a full FMF exhaust, and the common “3×3” airbox mod.
As far as mods go, I think all I really did to it was add bark busters, I had a set of hand guards from Enduro Engineering that were the same yellow/blue color scheme. Oh, and I added a rear fender pouch for tools. Other than oil changes and valve checks, that was it for the first year of ownership. I just rode it.
I did make the mistake of selling the dirt wheels right away. At the time, this was going to remain a supermoto permanently and all dirt-related fun would be for the YZ250. But that idea quickly went out the window after I did some trips on the supermoto, going from road to dirt, then road again. A dual sport is so much more versatile. After a while I asked on our local supermoto facebook group if anyone was selling a dirt setup for the DRZ and soon picked up a set of rims and tires again.