YZR500 Yamaha OWH0 Mikuni carburetors. In 1997 yamaha change the crankcase angle from 70’ to 75 degrees. This engine was designed to improve power delivery, rideability, and acceleration. With old/standard carb rubbers carburetors were asymmetrical like the one for sale, for linear new rubbers were used. Next year YZR switched back to 70 degrees and Keihin carbs to the last bike.
Carbs here are practicaly identical to standard , only asymmetrical type (that was developed already in 1994) They are missing 2 floats, 1 float valve, main/pilot jets. Floats are slightly different from inline, jets are same.
Very rare carbs, please check the pictures.
Thanks