[p51mstg]

I can't think of a bad thing to say about Dynamix. Polaris has been testing that system on the RZR for quite a few years, and I haven't heard any wide-spread problems with it. My wife and I both demoed two VR1 650's last season, one "regular" and one Dynamix. Both of us preferred Dynamix by a wide margin. It erases inside ski lift and makes cornering much easier. I thought it was interesting that when Levi Levallee rode 500 miles along Superior's North Shore in one day last winter, he took a Dynamix instead of an XCR.

 

[SkisNH]

I can't think of a bad thing to say about Dynamix. Polaris has been testing that system on the RZR for quite a few years, and I haven't heard any wide-spread problems with it. My wife and I both demoed two VR1 650's last season, one "regular" and one Dynamix. Both of us preferred Dynamix by a wide margin. It erases inside ski lift and makes cornering much easier. I thought it was interesting that when Levi Levallee rode 500 miles along Superior's North Shore in one day last winter, he took a Dynamix instead of an XCR.

Couldn't you have dialed out the ski lift with a couple of clicks on the IFS shock.

 

[gwilburn]

Couldn't you have dialed out the ski lift with a couple of clicks on the IFS shock.

It's pretty hard to reach that clicker while you're going down the trail.
I think the point is that it adjusts while you ride... adapting to all the variations in terrain and how hard you're riding.

 

[p51mstg]

Couldn't you have dialed out the ski lift with a couple of clicks on the IFS shock.

Dynamix is a lot like antilock brakes. When that was first offered in regular cars, I heard comments from a lot of people, saying they didn't like it because they could brake better without it. I think the people who said that didn't understand what antilock braking was. Those first varieties also freaked people out because of the vibration in the brake pedal - they didn't understand what was going on. Flash forward a couple of decades and most people don't know what it's like to not have that - every car comes with antilock brakes, and it's a gazillion times better than modulating the brake pedal with your foot.

To me, Dynamix is like that. It's making changes to the shocks continuously, and at something like 200 times per second. Clicker shocks can't do that, even regular Fox iQS shocks can't do that. This is why it's so good in the corners.

It has its limits - it reacts to changes, which is why they call it semi-active. It can't anticipate, it doesn't see trail conditions. The other limit, and I think this is probably the main thing, is that it adjusts the shocks, not the springs. It can only do so much. That's why I don't think it will replace the XCR. Dynamix may become standard on certain models, but they still need machines with different suspension geometry and spring rates.

If you get a chance to demo one, you should.

 

[snowmachine]

Those high G-outs are the weak point of the of the Pro-CC suspension.

Long tails change that. They should be on every model

 

[northstarrick]

just put heavier weight oil in them. this has fixed a number of walker evans shocks without a revalve. it works. not many ride as hard as my son. he raced sno-x . the rougher it is the better he likes it. i made his 22 XCR into weapon by putting the cross country valve and spring on the front track shock with 7.5 wt. oil and just 10wt. in the rear. 7.5 in the IFS shocks. night and day better. and he has ridden sleds with exit shocks etc.

 

[Doug S]

Long tails change that. They should be on every model

Changed my 2025 XCR over to long tail springs and slowed down the rebound slightly on the RTS for this season.

 

[ed#215]

Because I can’t leave stuff alone I tried 500 miles on long tails on my Dynamix last season mixed with a few different fts springs, it’s going to take some homework on revalving even maybe a different program for them to enjoy any benefits. I do have 2 seasons on them with my CC shock packaged XCR and while it’s dialed in and works amazingly across a wider range of conditions with a single set up compared to before the long tails the Dynamix is just as good maybe a tad better straight out of the crate. I cannot express enough how good the Dynamix sled works, I see absolutely no need to invest in time and money tweaking shocks to run the long tails on it I don’t think the reward will be as great as it was for the traditional suspension, going to a non bypass rear track shock body for a touch better valve stack control could be a wiser investment and maybe only something the hardest or pickiest of riders would ever need. (Ones built and ready to try) I did end the season bumped up to HD torsions for more aggressive ski bite under hard acceleration mid to corner exit along with C&A XPT Skis. I had all the shocks rebuilt this summer I believe it was 10 more per shock than a traditional shock and I purchased an updated Fts cap with std. service port vs the micro unit it came with these are available directly from Fox through Andy Wenzlaff black caps the new, orange stock the other 3 shocks use the std Fox needle.

 

[gwilburn]

@ed#215 that sounds great! In the past I've had Ian at Monster Performance revalve my Fox shocks when refreshing. My QS3's on a 2017, got the center shock stiffened, and my QS3R's on a 2022 RR softened.
I'm hoping I only have to get these rebuilt now and then.

 

[tbart]

Because I can’t leave stuff alone I tried 500 miles on long tails on my Dynamix last season mixed with a few different fts springs, it’s going to take some homework on revalving even maybe a different program for them to enjoy any benefits. I do have 2 seasons on them with my CC shock packaged XCR and while it’s dialed in and works amazingly across a wider range of conditions with a single set up compared to before the long tails the Dynamix is just as good maybe a tad better straight out of the crate. I cannot express enough how good the Dynamix sled works, I see absolutely no need to invest in time and money tweaking shocks to run the long tails on it I don’t think the reward will be as great as it was for the traditional suspension, going to a non bypass rear track shock body for a touch better valve stack control could be a wiser investment and maybe only something the hardest or pickiest of riders would ever need. (Ones built and ready to try) I did end the season bumped up to HD torsions for more aggressive ski bite under hard acceleration mid to corner exit along with C&A XPT Skis. I had all the shocks rebuilt this summer I believe it was 10 more per shock than a traditional shock and I purchased an updated Fts cap with std. service port vs the micro unit it came with these are available directly from Fox through Andy Wenzlaff black caps the new, orange stock the other 3 shocks use the std Fox needle.
View attachment 2170107
View attachment 2170108

Did you make any changes to the valving or rebound with the different springs?

 

[ed#215]

Did you make any changes to the valving or rebound with the different springs?

No left everything stock even stayed with the stock valve stack on the second rear arm shock I had the bypass body replaced with for a starting point. The std Dynamix torsion springs and HD are the same wire size/rate just the HD has more starting angle.

 

[Sre1000]

Changed my 2025 XCR over to long tail springs and slowed down the rebound slightly on the RTS for this season.

You'll like it put about 3000 miles on that setup last year. Sled definitely stays more planted and adds a slight bit more compliance in the stutters.

 

[Lid2]

Don’t forget he is a lil twink of a fella so he can get away without needing much in the way of suspension beefiness ( if that’s even a word lol )

 

[ed#215]

Who you referring too?

 

[FruedSS]

Thanks to all with experience for sharing! This has been a very informative conversation. I have been on the fence, but I now think I will be happy with the Dynamix performance.

 

[Lid2]

Who you referring too?

Who you referring too?

Levi lavalle. I thought I read on here somewhere about him choosing a dynamic sled over a Xcr . For some ride. I was just pointing out for those that don’t know that Levi is not really a good example for guys to judge suspension on good or bad. Because he is a little fella and most of us including you and j are not .

 

[1fastpolaris]

Levi lavalle. I thought I read on here somewhere about him choosing a dynamic sled over a Xcr . For some ride. I was just pointing out for those that don’t know that Levi is not really a good example for guys to judge suspension on good or bad. Because he is a little fella and most of us including you and j are not .

Arguably one of the best judges on suspension. If he's jumping canyons or racing snow cross I'm sure his opinion would change, but for the best out of the box setup I'd trust his opinion on the dynamix.

 

[Lid2]

I disagree but that’s ok. IMO Polaris hasnt made a sled out of the box capable of high speed rough trail riding with a heavy rider since 2015 prox . I’m willing to bet a heavier rider will pancake the shit out of the fts. Stock.

 

[Doug S]

The stock spring setup is based on an average of rider weight. Being you have riders from say 150# to 300# your not going to get the ideal setup without changing the stock setup. It would be nice if you had options for torsion springs without it being an up charge

 

[ed#215]

Levi lavalle. I thought I read on here somewhere about him choosing a dynamic sled over a Xcr . For some ride. I was just pointing out for those that don’t know that Levi is not really a good example for guys to judge suspension on good or bad. Because he is a little fella and most of us including you and j are not .

lol I was gonna say at 6’1” 225 I’m probably in the average size range for reference to anything I comment about suspension wise. Also surprisingly they really got the calibration good for a change I only used up the fts travel once or twice in comfort mode once hitting a driveway's drop out off a big snowbank the other modes it was never a concern I would rank it up there as a mix of the Pro-X and XCR bailers which wasn’t perfect but probably the best stock Polaris sleds of this era compared to anything else we’ve been offered.