Factory tooth count on top gear

[Yama4stroke]

Do different vipers come with different tooth counts on the top gear in the chain case?

I have a 2015 STX-DX I’ve had since new. When I had the chain case apart last I counted the teeth a few times so I knew what to order and swear it was 22 teeth but now after doing some reading it seems like everything came with 21t stock. My buddy’s Ltx winder blew the top gear on my last trip and I remember his needing a 21 and me commenting that mine was a 22. The 22t are cheaper and way more available but I’m seriously second guessing it now. I don’t have time to get it apart until the weekend and it wouldn’t leave me enough time to get it apart and count the teeth again to be sure and order one and have it shipped and installed before my next trip. Does anyone know if the the STX’s came with a 22t top gear? If it is a 22t I’ll just order 22t cat gear #1702-395. I Appreciate any help. Thanks

 

[ateick]

According to Yamaha Partshouse the 2015 ST X DX came with 21/41. I think later on it was only the XTX with 21/41.

 

[Yama4stroke]

According to Yamaha Partshouse the 2015 ST X DX came with 21/41. I think later on it was only the XTX with 21/41.

That’s what I saw but was positive I counted 22 teeth. I may just order a bushing and try to replace it. I’m just concerned about damaging the bushing on install even if I freeze it and put the gear in the oven. I’ve always struggled not damaging bushings like this.