Not necessarily. With the 800s, Some model RMKs use a different belt then the trail Models.
The belts are different in length only 45.16" for the 1177 on the rush, switchback, and assault and 46.77" for the 1183 on the rmk. The clutch alignment is the same in all axys 800s. The differences between the 1177 and 1215 used on the 850 are only different in compound and share the same dimensions. Clutch alignments this far have been the same also.
Here were my belt and clutch measurements from my 2015 AXYS 800 SB. I intend to do the same on my 2019 Indy 850. This illustrates just how wrong certain online info can be.Patriot, I believe your measurements to be more accurate than Polaris. I was only sharing the info that Polaris has supplied this far. And the measurements given on the new bar are from the snowest site. I cannot make any claims to the accuracy.