I have two zx-9r’s a 1994 B1 model and a 1998 C1 model. They are totally different bikes with the 1998 model undergoing a complete re-engineering to make it lighter, faster and more nimble. These two bikes also function as my daily riders for the last 8 years so I spend a lot of time maintaining them and have managed to document a fair bit of the work required to keep them on the road.
Current state – 2022
The B1 model is laid up for the foreseeable future with a gearbox failure. While taking off from the lights, it shredded something in the gear box and makes a terrible noise. The failed part(s) are on the output shaft as the bike will idle in neutral with no sound. There is a common gearbox fault associated with zx-9r models but it is usually applicable to the C1 onwards so for the B1 to fail is a bit worrying!
The following are articles related to work done or status updates on the zx9’s: