2023 V4S Dyno Tunning @ Carita Motorsports in Miami

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Bummer. Then the motor needs to be turned upside down with the outer cases stripped and the two lower cases removed. Instead of pulling the clutch and then the input shaft.
 
There is an input shaft bearing support that fit's into the case on the clutch side. So the gear diameter is bigger than the hole for the bearing support. Can't be.
 
Looks to me like you could pull the input cluster out of the cases intact. No way to replace the outshaft gears without pulling the lower cases off unfortunately. I do like italian engineering. The last time I ran into a cassette on a street bike was a 40 inch BSA.
 
BTW the snap ring for the output drive bearing is on the outside of the bearing behind the seal. If the bearing bore diameter is bigger than 1st gear on the output shaft you can change the whole transmission by removing the clutch side, pulling the cluster, pulling the shift drum then the output shaft bearing and pulling the output shaft.
 
Only way you’re getting into the transmission is by cracking open the bottom end
 

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At least it appears you can change the output bearing without splitting the cases. That alone is a significant change. The input cluster really looks removable intact thru the bearing retainer hole. So you should be able to service the shift drum and forks. I figured driven first would be way bigger diameter than the output bearing.
 

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