SM Rear Sprockets same as EX/MX?

[HadesOmega]

I was shopping for rear sprockets on Rocky Mountain ATV/MC and Primary drive sells sprockets for 2018 Alta Redshift EX and MX. I can't find a listing for SM though. I just wanted to double check that the EX and MX rear sprockets are compatible with the SM rear wheel.

 

[Philip]

MX/EX sprockets are 53 teeth, whereas the SM rear sprocket is ~50 teeth, I think. The bolt pattern is the same.

 

[HadesOmega]

Yes I'm looking to go from 50 to 51. Looks like Primary drive has 50, 51, and 52. Strangely they don't have a 53 at Rockymountain.

 

[Philip]

Strangely they don't have a 53 at Rockymountain.

They never did. Perhaps, KTM gas bikes never needed these final drive ratios.