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Old 07-13-2021, 09:19 AM   #1
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Suspension Upgrade Suggestions? - 2017 Sunseeker MBS 2400WS

We do A LOT of boondocking, which means a lot of gravel and uneven roads, which means a lot of swaying. I'm wondering if there are suspension upgrades that might reduce the swaying? Currently, all suspension is stock, including a stock Hellwig sway bar (not sure if there are 1 or 2 of these). I don't know much about suspension, so it's OK to talk down to me
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Old 07-13-2021, 09:56 AM   #2
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Quote:
Originally Posted by Eric Heffel View Post
We do A LOT of boondocking, which means a lot of gravel and uneven roads, which means a lot of swaying. I'm wondering if there are suspension upgrades that might reduce the swaying? Currently, all suspension is stock, including a stock Hellwig sway bar (not sure if there are 1 or 2 of these). I don't know much about suspension, so it's OK to talk down to me

Although I don't know how much help a suspension upgrade will help with swaying as this is lateral movement, rather than vertical, it should help your ride over uneven road surfaces. This is especially the case if your current suspension is factory stock.

That said, I highly recommend Lippert Road Armor equalizers. I also suggest to upgrade the stock equalizer shackles and wet bolts with the kit from Lippert. Their shackle brackets are at least twice as thick as what comes from the factory and well worth the extra $100. You'll want to replace the stock plastic bushings in the leaf spring hanger eyes with bronze bushings too. Installed them on my 5'er this spring and was a big improvement.

I also purchased, but yet to install, the Road Master Comfort Ride shock system. It's an often recommended upgrade companion with the Road Armor equalizers.
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Old 07-13-2021, 10:38 AM   #3
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I would recommend contacting super springs and talk with them about your MH and what you plan to do. Their sumo springs will help with the side to side movements
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Old 07-30-2021, 10:57 AM   #4
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We installed sumo springs as well. They help but there is still a lot of sway. They are easy to install yourself and not too expensive.
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Old 07-30-2021, 11:04 AM   #5
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sorry I missed this thread when it first came out.

2018 MBS chassis. it already has large sway bar.

first I added Sumo on all 4 corners. made some difference

Next I switched the front sumo from the Light duty ones to the HD duty ones. made a little more change, did not make ride any rougher. but still way to much sway.

Than I bought the Algileo Offroad Fox 2.0 rear shocks that he re-valved for his own MBS motorhome. WOW, what a difference. this is the fix!
even on top of the changes I had already made, the Fox 2.0 made a 100% difference. now they are selling Fox 2.5 which might be even better.


But still, its a top heavy motorhome and its going to sway some. We go over a washed out sand road to our storage area and time you would have to stop moving to get the sway to stop. Now it still sways a little on this road but no where as bad and you can continue to move
.

Yes sitting in a LT lane and a tractor trailer passes you at 55 you will still feel the push.but really a whole lot better than before. And it made a nice reduction in the push when a tractor trailer passes you at highway speeds.



https://agileoffroad.com/
website seems to be down today
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Old 08-02-2021, 04:02 PM   #6
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sorry I missed this thread when it first came out.

2018 MBS chassis. it already has large sway bar.

first I added Sumo on all 4 corners. made some difference

Next I switched the front sumo from the Light duty ones to the HD duty ones. made a little more change, did not make ride any rougher. but still way to much sway.

Than I bought the Algileo Offroad Fox 2.0 rear shocks that he re-valved for his own MBS motorhome. WOW, what a difference. this is the fix!
even on top of the changes I had already made, the Fox 2.0 made a 100% difference. now they are selling Fox 2.5 which might be even better.


But still, its a top heavy motorhome and its going to sway some. We go over a washed out sand road to our storage area and time you would have to stop moving to get the sway to stop. Now it still sways a little on this road but no where as bad and you can continue to move
.

Yes sitting in a LT lane and a tractor trailer passes you at 55 you will still feel the push.but really a whole lot better than before. And it made a nice reduction in the push when a tractor trailer passes you at highway speeds.



https://agileoffroad.com/
website seems to be down today
Thanks for getting back to me. This is exactly the info I've been looking for. Can I ask: 1) would you recommend skipping the Sumo springs? 2) Do you think the shocks alone are enough? I notice they also have "packages" for the 2500 - anything in there you think might help?

I put this project off because I wasn't finding the info I wanted. Now, the Agile Fox 2.5 (and 2.0) are on back order. Oh well, "he who hesitates...."

I agree with everything you say about the sway. 1) Yes, some sway is still going to happen; I'm just looking for improvement. Like you say, it would be nice to NOT need to go to a dead stop. 2) I'm already fine with the highway speed push, so any improvement is just gravy.
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Old 08-02-2021, 07:46 PM   #7
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Originally Posted by Eric Heffel View Post
Thanks for getting back to me. This is exactly the info I've been looking for. Can I ask: 1) would you recommend skipping the Sumo springs? 2) Do you think the shocks alone are enough? I notice they also have "packages" for the 2500 - anything in there you think might help?

I put this project off because I wasn't finding the info I wanted. Now, the Agile Fox 2.5 (and 2.0) are on back order. Oh well, "he who hesitates...."

I agree with everything you say about the sway. 1) Yes, some sway is still going to happen; I'm just looking for improvement. Like you say, it would be nice to NOT need to go to a dead stop. 2) I'm already fine with the highway speed push, so any improvement is just gravy.



you could try the shocks as a first step. the guy from AO was saying how the shocks are so far inbound on the axle it takes lots of dampening at the shock to control the sway. After looking under there I see what he is talking about.


I did my own install, but I had to take a ratchet strap and compress the Fox shocks so they were close, but still too long, than put top bolt in, than compress them more slowly until bottom bolt lined up. There is so much gas charge in there no way you can do it by hand. But I was working with coach on the ground.
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Old 08-03-2021, 10:31 AM   #8
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The AO site says that the 2.5 shocks are designed to only work when a 2" rear leaf spring lift block is installed. Appears my RV does not have the 2" block. Did yours? I'm trying to contact MB parts to see if it is available.

Do you think an alignment is necessary after the new shocks?

BTW, I've never touched anything suspension-related on any vehicle, so I will have a mine installed for me.
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Old 08-03-2021, 11:41 AM   #9
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I don't recall about the blocks.
I have a 2018 chassis, 3500 2wd Class C. I could call AO to make sure you get the correct stuff.
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Old 08-26-2021, 06:09 PM   #10
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Upgraded leaf springs & coils

The Agile shocks that TowPro recommended are backordered 5-6 months. In the meantime I'm considering upgrading / replacing my leaf springs. I have seen where other people have lifted the rear end several inches with new leaf springs and coils. Does anyone else have experience doing this?

Also, it seems that my rig rides low...I think it is lower than before I started doing rough roads. Maybe my current leaf springs pooped-out? I don't know much about suspension systems, but the springs seem pretty flattened to me. Anyone agree?
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