This set was removed from a 1978 XS1100.
 
The following service has been done to these:
 
1. Carb bodies completely disassembled and ultrasonically cleaned and all passages verified to be clear.
2. Exterior surfaces for carb bodies and float bowls vapor blasted.
3. Carb tops vapor blasted and polished
4. Any steel components stripped and re-plated with zinc clear chromate.
5. New K&L float needle valves installed.
6. New Viton reusable float bowl gaskets installed.
7. New brass fuel tee's installed.
8. All float bowl, top cover, and control screws replaced with new stainless steel hardware.
9. New Mikuni vent tee's installed.
10. New rubber choke pull dust caps installed.
11. New Mikuni Main, Pilot, air jets, and needles installed
 
 
These have stock jetting #137.5 mains, #42.5 pilots, #180 air jets.
 
I guarantee these carbs to look like new and perform like new or better.
 
Carbs have been bench synced which should get things very close however most bikes will still need a final vacuum sync and idle speed set after installation