The build date is on the firewall decal behind the passenger seat.
I dropped it off at the dealer today. I'll let yall know what they say.
I have an identical issue so please keep us posted. I adjusted my cable but havent had a chance to try and replicate the issueI have a 2021 Blue KRX with a production date of September of 2020 that is jumping out of high gear when descending down a steep grade or road. I tried adjusting the shift cable but did not help. I then tried the stronger detent spring from JBS and that did not help either so now it is at the dealer waiting to hear from Kawasaki on what to do next.
I have the same problem on a 2021My build date was 11/19. I had the jumping out of gear. My dealer called Kawasaki and they authorized them to replace the sprague bearing. The multiplate clutch rides on this bearing. The whole unit was redesigned for 2021including the housing
I got the new unit. I haven't had a problem since.
Sorry to hear but thanks a lot for sharing this. I saw your post but too late. I'm going to go out and try and replicate it and definitely will be videoing this. Haven't made my first payment yet and thinking about not...It's not the cable adjustment, look at the parts diagram posted earlier in this thread, part #13262c is not positioned properly to keep the "dogs" in part#13139 inserted. When this comes out it, it "jumps out of gear". Mine is being torn apart right now for the 2nd time. At first, I was in denial to thinking that it was only an adjustment, but I came to my senses and now I've realized that mine is junk. I was waiting to tell mine entire warranty experience after it was fixed, but you guys need to know what is going on....they don't know how to fix it. 2021 parts have letters by them indicating possible updated parts.....I didn't research it. I provided video to Kawasaki and they called me "to understand my problem", Bullshit...I call BULLSHIT! Next time yours does it, video their shitty tranny noise to "help them fix your problem". I like to hang back and gather all my information and then provide the results. The repair is not complete.