2021 Polaris Sportsman 570 - Belt Box Exhaust Mod

Some of the 2021's come standard from the factory with the belt box exhaust right over the left rear wheel allowing water, mud, small pebbles into the belt box from the spinning left rear wheel. I essentially extended the exhaust so that it would be away from that left rear wheel.
Link to flexible tubing on Amazon: www.amazon.com/dp/B000BPZ55Y?...
Can't find the coupling reducer at Home Depot at the moment. :(

[@JimboP-Outside]

Make sure to watch the follow-up video after I’ve taken the 570 to the trails with this mod. Here it is: kzbin.info/www/bejne/mHnanYt_edpghc0

[@dankruger2890]

The wife just bought a 23' Polaris 450. Just awesome looking machine(i want one). Just bought 4 tubes from amazon. Going to Home Depot Tomorrow for the three to two inch reducers. Thanks for the Help

[@glennfox3744]

Thanks for the video and update on this I have a 21 450 and my first time on the trail I filled the box with water I'm going to try this on mine so Thanks

[@MichiganPeatMoss]

June 2022: Just taking all this apart for the first time for a belt replacement. A lot of crap in there after dry, dusty riding. Surprised there's not some sort of light mesh filter preventing ingress. Thanks for the video. :)

[@BrickyardPowerMan]

Amazing to see Polaris continues to manufacture ATVs with this issue. I had a 2000 Polaris Scrambler 500 with the CVT intake located inside the front left fender. Sold the bike around 18 years ago and going from memory but I seem to recall it faced forward .... maybe rearward. Whichever orientation, it could and did let water inside. At that point, it was a paper weight and wouldn't move. On a trail, in a water hole ... didn't matter. Spoke to the dealer where I bought it who said they addressed it in newer models (maybe '02, '03 - something like that) but wouldn't do anything to fix my issue. Lost confidence in the bike and the dealer.

[@JimboP-Outside]

I don’t blame you. For a manufacturer selling these types of vehicle for decades, I don’t understand their thought process on this.

[@nostylelikemine85]

Did the same mod following your instructions after having a day of a slipping belt. Seems to have taken care of the problem. Following to see what you do with the belt intake.

[@RPDXC]

Great vid. Will be doing this exact same thing on my 2022 570. It's a bad design, but this is a good, simple, and clean fix to this issue.

[@JimboP-Outside]

Thanks Ryan. It works well and is easy to remove if necessary. Enjoy your ride, those 2022’s are pretty awesome!

[@ginamani4546]

Same! Mine is at the dealer right now for this issue

[@donnieflame]

They changed this issue in 2024, mine is 2024 and that pipe runs up along with my intake near the gas tank up top

[@Varicent]

i have to route my belt case exhaust as well but the intake hadn't occurred to me. nice to know where to have a look and see if its open and in somewhat of a silly spot on the '23

[@xlilsteviex7392]

So the 3in flexible duct fits on the 3in - 2in coupler ? I have a 2022 wanted to do the same thing ! Thanks

[@westonlance2814]

Let me know how this works just bought my 2021 570 and got water into mine. This is the first video I could find on helping. Thank you!

[@JimboP-Outside]

Thanks Weston. Sorry to hear you got water in your belt box, this is such a poor design by Polaris. I took my quad to an ATV park for the day and while I don’t “submarine” it, I did hit plenty of big puddles with mud - no water came into the belt box. 👍 I have a video of that day here on my channel. In the next few days I’ll be posting a follow-up video to this mod and also a review video of the Sportsman in general.

[@dylanbendel]

I'm curious why Polaris redesign the intake like that? I have a 2018 same engine but my intake is all under the seat and I rarely have problems. Only when I go in super deep water and mud and get stuck is when I have issues.

[@JimboP-Outside]

Yeah, I have no idea either. Only explanation that I’ve heard so far is that the rear belt box exhaust was designed like this to allow more air ventilation for engines with EBS. Other than that, I have no idea why

[@jefflife3476]

Any advice on removing the seat? I dont feel any clips and it's pretty stuck. I dont wanna break it! 👍

[@JimboP-Outside]

It's pretty tight, but put your hands under the back part of the seat and pull straight up. Then it will slide from the front to back.

[@jefflife3476]

@@JimboP-Outside she popped right off thank you

[@ourlifeinportugal]

That might increase the belt heat

[@dave434]

I see the issue there, Someone at Polaris wasn't thinking when they designed it , And taking away the rear storage wasn't good ideal either, But I understand You can order it and put it in, If that's the care, its a money thing !

[@JimboP-Outside]

Yes, I agree. This is very likely the case. 👍

[@donpster]

Im confused as to why you say 3 to 2 reducer but the flexible hose is 3"? could someone comment with the proper part numbers to do this to a 2022 570 trail please? Thx and I will be doing this asap!

[@JimboP-Outside]

Because the flexible hose I used and the opening of the belt box exhaust were almost the same size. By using the reducer it allowed me to go outside of the belt box exhaust and inside of the flexible tubing in order to make the connection and clamp them down. Another option could have been a pipe that would join both on the inside (or outside if big enough). There are many possibilities.

[@donpster]

@@JimboP-Outside Thx for your reply. Could it possibly be a 4"to3" reducer? I just dont want to order the wrong parts. sorry for bothering you.

[@westonlance2814]

Have yall figured out how too put the back seat on?

[@JimboP-Outside]

When I bought my machine there was an employee providing orientation on my new ATV. He kept showing me, being very precise about how to put the seat back on. I was trying to figure out what the big deal was. Then he showed me that if you don’t put it in correctly, you’ll push the rubber grommets out the bottom and lose them. So he showed me to slide the front in, then walk around to the back and be careful to align the seat pins into the rubber grommets correctly then push down. Apparently a lot of folks are rushing and their pushing the rubber grommets out (not realizing) making the seat is lose.

[@ryanwinter4857]

I dont understand why they didnt do it like the 850s. Mine is perfect on my 850

[@nombr]

Good video! What did you do for the intake side?

[@JimboP-Outside]

Thank you Gavin. I’ve been lazy, haven’t figured out the intake yet. I need to get on that.

[@nombr]

Have you taken the belt guard off and found lots of dirt/debris?

[@JimboP-Outside]

@@nombr Definitely mud, but not debris. I posted another video where I remove the belt box casing to reveal what got into the belt box.

[@scottb9691]

I have a 2021 570 utility I don't have that problem. Is this on a basic 570 model?

[@JimboP-Outside]

Some of the new 2021 570’s have this new belt box exhaust, but not all. I believe the 570’s with EBS have this new exhaust.

[@scottb9691]

@@JimboP-Outside Ok I'm new to polaris so after watching the video I went out to check mine and it was sealed with no opening. That is a shame on polaris part considering the 2021 is all new design. Great video!!!!

[@scottb9691]

Ok yea, I don't have the engine break.

[@MrSteeda1]

I seen that on my sons 22 and was like wtf polaris do you have a link to the rube you got on Amazon?

[@JimboP-Outside]

I just searched my orders and can’t find it. Tried three different terms. Maybe they don’t offer it anymore? Sorry man, I tried.

[@FOGELL_TheGreat]

Im getting a cvt intake off the older models cause it up and then points down instead of pointing straight up like the new model,

[@JimboP-Outside]

Good idea, I may do the same

[@FOGELL_TheGreat]

@@JimboP-Outside yeah I figure the intake at the bottom is rubber and the old style is plastic so it should just slide in , might need to cut it a lil so it fits but I’ll see picking one up this weekend and I’ll make a video on it if it works

[@aydenrothfuss5679]

Can't even go down a seasonal road without my belt slipping

[@JimboP-Outside]

If it’s that bad, it might be more than just the intake and exhaust. You might need to seal the back of your belt box. That means pulling the cover, both clutches, and sealing the back. I haven’t done this myself. Polaris rushed these machines out the door, my opinion.

[@haidaguy1436]

Is that flexible tubing 2 inch?

[@JimboP-Outside]

It’s actually 3 inches, at least according to the manufacturer’s specs. This allows it to fit over the reducer.

[@mainebearhunter3444]

Mine is totally different , mine runs in by my airbox have a 21 sportsman 570 eps touring .

[@donnieflame]

Wierd mines a 2024 sportsman 570 base and it runs up by the airbox intake aswell lol

[@donnezelek3619]

Can you send a link for the things you bought on Amazon?

[@JimboP-Outside]

I’ve got the link to the flexible tubing from Amazon in the description now. Can’t find the reducing coupler on Home Depot’s site. Not sure why. Apologies for that.

[@Martorana96]

Is the reducer 3-2? Just curious because the tubing is 3 and the oem tube seems bigger

[@JimboP-Outside]

Yep, you’re right. It’s a 3-2 reducer. A couple weeks after I bought it at a local Home Depot I couldn’t find it online. I wanted to post a link. If I find it in the future, I will.

[@JimboP-Outside]

Definitely rubber, it has a little “give” to it unlike a hard plastic.

[@JimboP-Outside]

@@lenphelps8414 I believe this is it: www.homedepot.com/p/Fernco-3-in-x-2-in-PVC-DWV-Mechanical-Flexible-Coupling-P1056-32/100372295?MERCH=REC-_-searchViewed-_-NA-_-100372295-_-N

[@rudolphschenker]

The 2023's have a new system..

[@JimboP-Outside]

Glad to hear that. This old system on my 2021 is nuts.

[@michaelussher8876]

Not happy with my new 2021 570, No storage now , The belt box exhaust way to low on the chassis, Will be last time I order one before actually see one in person

[@MichiganPeatMoss]

June 2022: Yeah, the more I learn the more I'm disappointed. LOL - That hollow space is going to have to store on-trail tools hereon for belt replacements, etc.

[@benrjohansen]

It seems crazy that you have to make these mods on such an expensive unit. These problems should have already been solved by R&D?!

[@JimboP-Outside]

I agree with you Ben. My humble opinion, but I think Polaris got ahead of themselves with the 2021 refresh and rushed them out the door given the high demand thanks to COVID.

[@benrjohansen]

@@JimboP-Outside Maybe I’ll hold off upgrading my 2012 Sportsman 400 HO until next year. I really do like the looks of the Sportsman 570 trail edition though. I hope they can work out some of the bugs.

[@jamesmontgomery1297]

@@benrjohansen my 21 450 H.O has been a beast other than the water issues. Im not a fan of the belt box housing or the intakes and exhaust. I just installed the snorkel kit so that takes care of the intake and exhaust but that housing is another animal. I dont want to use silicon,I know I will eventually need to get it off.

[@rudolphschenker]

If everyone keeps buying everything from Amazon, there will be no more actual IRL stores..

[@willbelair5974]

I don’t have problems with mine but it’s a 2018

[@JimboP-Outside]

Good to hear 👍 There was a redesign in 2021, that’s where the problem is.