I have got left over a few chips to increase the ZXR400 cdi rpm limit to a safe but very useful 15400rpm, this allows you to gear your bike down 1 tooth on the front or up 3 on the back and still achieve the same top speed.
The cdi to chip is the UK M box or the import L box with the pink wire earthed.
Cost will be £50 + p&p and you will get your cdi turned round in a few days.
Ring Rich on 07835240023 if you are interested.
CDI chipping
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