I bought two 37mm, and two 7/8" collars (Princess Auto). The big ones I cut, so I can squeeze them. On the each side of cut I welded flat piece of steel and drilled a hole trough the flat part. On top of them I put the small ones. They have a hole with tread and an allen screw on the side. I use them to tight bars. It was too low and my brake hose was hitting dash board, so I put on each side one more 37mm collar under. Than I welded all of them together (see picture 2). The bars are 7/8” pipe and they were longer for 1” than stock bars, but I cut that 1” piece at 45 degrees angle and welded to make 90 degrees as you can see on picture 2. It made them in 4 directions adjustable. I had to low my bike as I said before. To lower your bike you need to lose 2 bolts on each side of fork. I did it to make a better grip. Forks are in the collars for 1 ¼. The bike is more agile and more responsive in turns, but because of direct connection to forks it increased fine vibration of engine you can feel in your hands between 4 and 6000rpm. I didn’t count on rear view improvement, but arm and body position is different now so I don’t se my elbows any more.
Sorry, my Engish isn't perfect. I didn' set a date on my camera, but in Canada this cannot be January