I couldn't repair the original brake master cilinder of my Z750 L (1982) because of internal corrosion. Kawasaki doesn't sell the part anymore, so I ordered this one. The lever of the ordered part was black, so I had to remove the coating and polish the lever to get the same 'silver' finish as the clutch lever has. That was an easy Job (it took about 45 minutes) and the result is very satisfying. The finish of the cylinder is not as nice as that of the original part, but therefore the price is very attractive.
This Clutch cylinder works great with my CB550 which has only one Brake disc.