They split the 11's in 93. First part of the production year was C, the second was D. I can see no difference in the cc's. Darrell has one, and even the manuals are different. I'll ask when he gets off of work.usually the letter after the zx11 part would be for a year or significant model change I cannot see how they would have both of those models for 93
I know the carbs are different so that would tell me that some other things are different also. the D1 had more power than the c4.I was just on zx forums they say the engine is the same but the bodywork wheels and basically everything else is not interchangeable
I know the carbs are different so that would tell me that some other things are different also. the D1 had more power than the c4.
the crank cases are different part numbers also so would figure they are different parts too.
I just did a quick search on the net
I wouldn't doubt it you know how unreliable some people can be on the internet.