It's not a Yamaha carb if that's what you are asking. It is made by Mikuni and seems to be quite good regarding quality. however this carb only works if you have already delete the TOR's system.
I did not have to change anything, this bolted directly into place. But only because I had already deleted the TOR's system. If you still have the TOR system you will need to remove for this carb to work.
It's not a Yamaha carb if that's what you are asking. It is made by Mikuni and seems to be quite good regarding quality. however this carb only works if you have already delete the TOR's system.