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Old 05-19-2020, 12:18 PM   #1
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2015 25' FB Flying Cloud
Marana , Arizona
Join Date: Aug 2018
Posts: 2
Sumo Springs/ Timbren

Has anyone had any experience with Timbren or Sumo Springs on their tow vehicle? They replace the factory bump stops and are supposed to prevent rear end “sag“.
Any advice based on experience would be welcome.
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Old 05-19-2020, 02:19 PM   #2
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2005 30' Classic
Glendale , Arizona
Join Date: Oct 2013
Posts: 20
I have Timbrens installed on my GMC 2500. I installed them to level the ride when we use our Hallmark truck camper. Our set up doesn't allow us to tow the airstream with the Hallmark loaded, which we never intended anyway. I did find that when towing the airstream I needed to adjust the hensley hitch so that the timbrens are engaged but not carrying all the weight. Too much weight seems to make the ride bouncy. Easy adjustment with the hensley. I also changed the stock shocks to bilsteins and with the combination I am very happy with the setup. No proposing and a smooth ride.
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Old 05-19-2020, 03:51 PM   #3
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Merrimack , New Hampshire
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We’ve used Sumosprings on both a F150 and F250. We saw a huge benefit on the F150 in reducing bouncing. On the F250, the impact was not as noticeable.
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Old 05-19-2020, 06:34 PM   #4
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2019 30' Classic
New Milford , Pennsylvania
Join Date: Jun 2019
Posts: 30
Had Sumo Springs installed on my 2019 Ram 1500. 1500# models. Took the slight sag away and just slightly better hitting bumps and dips. Same unloaded. Towing a 2019 25 Globetrotter.
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Old 05-21-2020, 01:23 PM   #5
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1973 Argosy 22
Lake Wales , Florida
Join Date: Jan 2020
Posts: 20
We had the Timbrens on our Dodge 1500....did help with sag but we found they made the ride too stiff.....took them off and installed airbags....for us was much better ride when towing....
That said we sold the dodge and now own a f250 super duty
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Old 05-21-2020, 01:29 PM   #6
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2018 27' Globetrotter
Elbert , CO
Join Date: Oct 2019
Posts: 44
Sumos were tremendous for us twice. The first use was on our Navion Class C - greatly reduced the rolling motion every time we went over a curb. And they smoothed out the ride on our F250 so that it didn't feel like we were going airborne every time we hit a washboard road.
Easy installation and a great investment in our ride.
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