New belt on 2020 questions

Mjunkie

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Jan 19, 2008
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Ogden, Utah
First I apologize for being a newb to ski-doo and not knowing the history as well as many others but as I was looking into a spare belt for my new freeride, I saw that it has changed from the year before. Some kind of "upgrade" from last years. As far as I could learn, there isn't any change in clutches from 2019 to 2020 so no reason there for a new belt there. I also read about a lot of belt eaters in 2018 (hopefully something of the past). Does anyone know what the real difference is and can offer opinions on whether it's worth buying the $219 "upgrade"? Can the older belt still be used? Also according to the ski-doo website the new belt isn't available right now even though I was able to find a few on eBay at full retail, and the dealer I got my sled from has a few but still at a premium price. Thanks for the input.
 

farmboy84

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Nov 26, 2007
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The belts have have been used on the 850's are 391, 531 and 571 which is the current "best" belt. I have never used anything but the two 391's that came on my sled new in '17. I have never blown a belt and am going to find a new 391 for another spare for half the price of the 571.
 

Mjunkie

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Jan 19, 2008
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Ogden, Utah
The belts have have been used on the 850's are 391, 531 and 571 which is the current "best" belt. I have never used anything but the two 391's that came on my sled new in '17. I have never blown a belt and am going to find a new 391 for another spare for half the price of the 571.
Ok, so they are all interchangeable just probably different durometers and "upgrades". Thanks!
 

sledhead_24_7

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Run at min the 531. That only pops the top cog off a bit when you blow a belt, 571 is the same. 391 is complete carnage, chunks everywhere. Pretty sure the 391 was discontinued, but I could have heard wrong.

At least my experience.
 
Dec 11, 2012
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First I apologize for being a newb to ski-doo and not knowing the history as well as many others but as I was looking into a spare belt for my new freeride, I saw that it has changed from the year before. Some kind of "upgrade" from last years. As far as I could learn, there isn't any change in clutches from 2019 to 2020 so no reason there for a new belt there. I also read about a lot of belt eaters in 2018 (hopefully something of the past). Does anyone know what the real difference is and can offer opinions on whether it's worth buying the $219 "upgrade"? Can the older belt still be used? Also according to the ski-doo website the new belt isn't available right now even though I was able to find a few on eBay at full retail, and the dealer I got my sled from has a few but still at a premium price. Thanks for the input.
I got the same sled as you, mine came with the 571 belt. I brought mine to Sled head Racing so Big John could put his clutch kit in and align and shim the motor. I think more of the problem with belts blowing is that the motors just need to b aligned and shimmed to perfection, which you don't get when they are rolling down the assembly line.
 

Matte Murder

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I think the 571 belts are WORTH it as are the 19 upgrades. My 18 got all the 19 upgrades (except finned secondary) and extra weight on top of that but I ran a 531 belt. My buddies stone stock 19 with 571 belt felt stronger, especially in the mid to high mid range.
 
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