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Punch

Kawasaki ZXR250C frame

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Punch
, 23rd March 2010 at 03:55 (2116 Views)
My daughter's CBR250RR was stolen and she/we have bought a 93 ZXR250c (assembled in Malaysia as a ZXR250 C-6 from what I can work out)

It needs a new frame as the headstock is cracked beyond repair. I have seen another post where someone dropped a C motor in as a replacement for an A motor. I have also seen that the frame is different between the A and the C models.

Bottom line question is - do we have to look for a C frame or will we be able to use an A frame with all the rest of our C bits?

I know Duc Supersports and CBR250RRs quite well, but appeal to informed knowledge on the 250C Kwaka, as there is an A series frame going very cheap nearby and do not want to make a mistake.

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  1. SS90's Avatar
    Hi there. I used to work on many ZXR250's (all models) ten years ago when I still lived in NZ.

    Any model engine will go into any model frame, and, interestingly enough, the later frames ('C' models), bend easier than the early ones (1989, or 'A' models), the main difference between an A and B Model is actually the swing arm, which is the same swing arm as used in the C and later models.

    The C model engines differ with ignition, cams, carbs and air box, as far as the engine goes,the cases where unchanged and are common on all models. Again, the frames,bodywork and tank from 1991 (C model) on dont fit straight up to earlier A or B models, but can be made to fit with some work.

    I can't say it is an easy job fitting C model airbox,tank, bodywork to an A frame, (because these are the parts you will find difficult), and perhaps I would suggest trying to find a C model frame, it will be less work, and more value.

    If you find a COMPLETE rolling chassis, (with air box, carbs etc), then I suggest if that was the best option you could find, then it would only be a matter of fitting the C engine, and of no real problem.

    You can fit the C model carbs to an A or B frame, but they have special CV slide controls on the airbox (it is actually REALLY important that you run C model carbs with a C model airbox and original air filter, or you will have carb problems)

    Since you can't run a C airbox with A tank (the tank fouls on the airbox, and you would have to actually cut the underside of the tank out and reweld it!), you really are limited to running the A carbs, with the C motor (you must also use the A model inlet manifolds)

    If that is confusing, just PM me, and I will try to help.
  2. kawasutran's Avatar
    Hi Punch! If you are interested on a complete bike with a very low k's (22,000) 1992 zxr kwaka, I got one. Selling it for $4000 ono. I will give it to you for $3000. Kiwibiker giveaway. Bought it from Red Baron for $6000. Y settle for a frame when you can have a complete bike for this reasonable, discounted kiwibiker rate?
  3. Punch's Avatar
    Hi kawasutran - sorry if there was a delay in responding to your post. I am not yet used to this forum and how to get notifications. I haunt Ducati forums because I have one. I also have a CBR250RR (MC22) and a 1959 BSA in bits - yes it is a sickness, even when you are as old as me and should know better!

    We got the bike for AU$250, so thanks for the offer - genuinely I think it was a good price. Personally just reading specs, I would pick the ZXR over the CBR as the screamer of choice. Spares seem to be a bit of an issue in comparison, but with some intelligent Googling, this can be overcome.