Ski-Doo Snowmobiles Forum banner

850 secondary rollers - when to change andnwhich brand?

15K views 39 replies 22 participants last post by  PT1911  
#1 ·
I have about 3300 miles on my 2020 BC- xrs and was wondering when most of you change your Secondary rollers? I had the primary rollers fail on me last year and was wondering if most change them early or wait for failure? Also, are you all using stock rollers? I saw in a magazine that G- Boost belts is advertising new rollers. Anyone use them?
 
#5 ·
I had a set fail at just under 900 miles on a 600 ETEC, no less. It's a crap shoot.

Now, all of my stock secondary rollers get replaced with aftermarket "hi-torque" rollers at the first service visit. They are relative cheap and it's not worth the risk to postpone replacement.
 
#6 ·
We have been testing all kinds of rollers on the market, and GBoost Extreme Rhino rollers have been the best so far. Not a single one has broken so far and we have been installing these since 2020 spring. We used to install hitorque rollers, but since quality issues we had to find alternative.

 
#7 ·
Roller longevity depends a good bit on how you ride and how easy you are on the reverse to forward/vice versa transition, that smacking noise heard most times is the rollers hitting the opposing helix face. I replace mine seasonally (average around 3k miles a season) just to be extra safe and not ruin a ride. The Gboost Rhino Rollers are awesome pieces, the Extreme version's even better.
 
#15 ·
Roller longevity depends a good bit on how you ride and how easy you are on the reverse to forward/vice versa transition, that smacking noise heard most times is the rollers hitting the opposing helix face.
Correct!

Always come to a COMPLETE stop before engaging reverse and ease into the throttle when using reverse.
 
#8 ·
Yes, especially when secondary/rollers are still cold and you hit reverse uncarefully, is the situation where the damage is mostly done.

Once I saw a post on FB where this company was testing QRS rollers on both warm and cold conditions. Some of the rollers were doing fine when warm but were extremely weak when cold.
 
#11 · (Edited)
you need a long punch to remove the pins. i also use a shorter punch to initially get the pin pushed out a bit because the long one flexes so much.
also whatever tools required to remove the secondary plus not drop the top chaincase gear down into the case when pulling the secondary and jackshaft out.
secondary clutch tools to allow you to relieve spring tension and diassemble it to get to the rollers.
torch to loosen loctite on the 4 secondary torx bolts.
 
#17 ·
But since you are in the states, can get them from Fett Bros or Chris at C-TPower.
GW's seem to have nice lookin ones although ive never tested em' myself.
Super good roller change vidya
 
#23 ·
Unfortunately, rollers are a bit like belt life. Some get much longer life than others depending on riding style. However, I would say that you should at least get 5000 miles and 10000 would be on borrowed time.

The rollers are very cheap and when one breaks it ruins a good ride. So with that in mind, it’s worthwhile to switch to Hi-torque or similar - just not OEM’s.

As for tools, yes you’ll need a few but Chris sells them and they are worthwhile to have. Not crazy expensive and they should be good for many years. When I purchase tools I always feel they are a wise purchase as if I had to get someone to do the work it would cost substantially more.
 
#25 · (Edited)
We haven´t installed Hitorque rollers for couple of years now. Too many problems, quality isnt where it used to be. These ones lasted for 700km on a summit expert.


What comes to GBoost Extreme Rhino rollers, not a single set has come back yet.

2023 850TurboR is gonna have new stronger rollers, interesting to see how those are like
1h 12min:
 
#26 ·
You must have received a bad set or something. We have sold hundreds and hundreds of sets for the last ten years and never had an issue or complaint. If these were not a quality and dependable replacement part we would not be selling them.
Not trying to knock the G boost at all but they haven't been on the market very long.
 
#27 ·
Yeah we used to install a lot hitorque rollers and for a long time and it was my recommendation too. Problems begun back in 2019 and for two seasons I would say at least 50% were broken way too early, especially with sleds that had clutchkit with aggressive setup and higher angle helix. Also the large distributor here saw the issue as lots of complaints flooded. And I believe lot of people dont bother to even complain, they just buy new ones from another brand or change back to stock ones. My first thought was also that it must be a bad patch of products, but afterall all shipments 2019-2020 were the same. We even contacted the manufacturer straight but they claimed nothing had changed, even though you could see the color difference between 2018 and 2019 rollers. I really hope they have got their product back to quality it was but in my opinion there are better options nowdays.
 
#31 ·
@Driver#96,
thanks for posting that vid which i'd seen before but missed the part about new factory rollers.
in the pic you showed, is that what hi torque rollers look like after they've been used? the larger pieces look metallic as opposed to what looks almost like phenolic material when they are new.
Lets hope these new rollers are strong and in the future no need to replace them with aftermarket ones. Im a bit surprised that doo didnt promote them at all.

Yes those rollers in the picture are from my ex 2020 expert and lasted around 700km. Hitorque rollers are some kind of fibre material an they tend to "compress" in use as you can see. All hitorque rollers looke like that after some riding.
 
#30 · (Edited)
Personally I dont sell anything, but do a lot clutching, testing, r&d. Promoting here does not even do anything in our market, as in Dootalk 99% of users are north americans.

One thing to consider that here in Europe we ride quite low elevations. That means we are able to use steeper angle helixes and harder secondary springs even on deep snow conditions. That equals more pressure and stress for the rollers. I have visited BC twice, and can say that conditions, clutching and problems with machines are quite different than we have here.

I bet rollers are more of an issue here than other side of the sea. And the same goes with belts, 2018 was catastrophical. But companies only look numbers, something that is major issue here can seem as minor inconvience on corporate numbers. After all its a numbers game.