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Discussion Starter #1
Does any mechanics that have worked on the gen 5 know if a gen 4 cassette will fit into a gen 5? This is for a racing application and the split is better for what we are trying to do.
 

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Gen5 gear position sensor is different and shift drum connection to sensor is different. Not done it myself, but heard of prject where gen5 engine went into gen4 bike and he used gen4 gearbox only to match gp sensor with gen4 electronics. Does gen5 drum works in gen4 gearbox needs confirmation?
 

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Discussion Starter #3
If the gen 4 drum is swappable would it be able to cut and splice the sensor into the gen 5 wiring and it work?
 

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I remember reading about this in a german forum and belive (not sure) that sensor electrical outputs were not compatible. I think it is too much work to modify/adapt the sensor electrically. Better compare/measure drums for compability.
 

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Discussion Starter #5
Damn. I would think it would just be a halls effect sensor. The split on the gen 5 is just way to close and killing us. Is there any company that makes drop in units with different gear sets or can the gears be swapped out for the gen 4’s on to the 5s shafts?
 

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Put gen4 and gen5 gear ratios into Excel table and multiply gen4 values by 43/40.
When geared 3 teeth differenty at rear, you see following:
At 2nd and 5th both have same speed.
Gen5 has taller 6th (good) and taller 1st (bad).

If no motivation messing with kit gears, then an interesting idea would be using gen4's 5th and 6th gears in Gen5 box, that would make bigger jump going from 4th into 5th.
 

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Discussion Starter #8
This will be a first for me digging into a cassette style trans, can I pull the gears off the input and output of the gen 4 and put them in the gen 5 gear box?


Do you have a link to the race kit manual? I still haven’t gotten my recall done so I can just pretty much order whatever other gears I need and call it a day.
 

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can I pull the gears ... gen 4 and put them in the gen 5 gear box?
Kit gear part numbers look same for gen4 and gen5 suggesting good possibility. But I don't know if it is simple swap, because kit manual describes many issues to watch out for when playing with gears and kit shaft was needed with certain gear ratios. Have only changed shift forks myself. Once I investigated if it is possible to have nicely widespread box like s1000rr or R1 2015 using kit gears, yes it is, but gave up idea quickly, because many expensive parts are needed and no experience doing it myself.
 

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Discussion Starter #10
I can’t seem to find any info on the race kits with different gearing. I just seem to only be able to find some small 8 page catalog on Kawasaki’s website and only offer shims.

Basically I’m wondering if I can pull both cassettes and just swap gears? I think I can but I’m not sure
 

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I have a 2015 kit transmission (including shafts) but no shift drum it did 5 BSB superbike races that year iv never fitted it too anything so if you want a deal ping me a message.:wink2:
 
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