Having not seen the VTZ in person and only looking at the homologations (and part numbers), it appears the VTZ shares the crankcase and a ton of parts from the Rok Shifter/RVXX. It uses a longer con rod at 115mm vs 110mm for the Rok. Obviously the cylinder is different, it is the same as the previous RTZ however. The pipe was built to fit the new combo of parts, which is to be expected. Definitely interesting that at minimum the castings are the same for the crankcases.
Shame itās not the same conrodā¦
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A bit sad that Tec-Sav/Falcon RS is not at the front anymore 
What you describe is more fitting for RR circuit rtheng. Iām speaking specifically to something that would benefit/enhance the experience for sprint course racing.
We have been working for about 3 years with Iame with some pretty good results.
These engines are not like TM and very sensible at temperature and atmospheric pressure.
We had destroied about 35-40 pistons before understanding how this engines like to workā¦way richer than TM on jetting 
Today I learned some of you are flat shifting your KZ enginesā¦ 
My engineer brain wonāt let me even try it, lol.
Seriously though, are the shift forks holding up to that sort of abuse? What oil is everyone using in the gearbox?
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I think most are running ATF these days. I can flat shift, but my mind and foot is so used to blipping it really messes with me and I donāt feel the gain is worth the extra wear on the gearbox. Gears 5 and 6 are the most common to flat shift from what I know.
Iāve run a few different fluids over the years, and am currently using Motul Transoil Expert. A bit more viscous than some of the light stuff out there, but works well.
Flat shifting isnāt something I do in the KZ. The risk/reward just isnāt there, especially when most gearboxes shift very easily with a very slight blip of the pedal.
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