One of my favorite topics to discuss is suspension! I talk about it so often because every time you hit the road your unit goes through an earthquake. This shake, rattle and roll often puts unnecessary stress on the components of your RV, and let’s face it—repairs on those components can get expensive! Let me introduce you to another suspension upgrade today: Trailer SumoSprings. SuperSprings International proudly touts that these springs reduce G-force by 68 percent on average.
Say goodbye to hop, sway and vibration!
There are four options when shopping for your Trailer SumoSprings suspension
- GAWR: 3,000 – 5,000 lbs. | TSS-107-40
- GAWR: 5,000 – 8,000 lbs. | TSS-107-47
If you have a spring-under axle configuration:
- GAWR: 3,000 – 5,000 lbs. | TSS-106-40
- GAWR: 5,000 – 8,000 lbs. | TSS-106-47
Check out this video to see the testing and results of this suspension upgrade:
Read more from Dustin about suspension upgrades:
- Video: How a typical RV suspension works, plus upgrades and benefits
- What’s In The Shop? RV suspension inspection and upgrade
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More from Dustin
Dustin owns and operates California RV Specialists, an independent RV repair shop located in Lodi, CA. He thrives on sharing his knowledge and enthusiasm of RV repair and maintenance with his team, customers, and virtual friends.
Be sure to check out his YouTube channel where he shares what’s going on in the shop and the product offerings in the store. Dustin is also very active on Facebook. Join his group, RV Repairs and Tips – What’s in the shop!
Dustin proudly operates the business alongside his wife, Ashley; but the true pair that run the show is their Boston Terriers, Arvie & Hitch.
I considered installing these, but on my trailer the iron propane line runs adjacent to the frame where the sumo spring would contact. I cannot offset this line without serious modification, so no sumo springs for me unless someone offers a solution.
Try contacting them. They were very responsive.
Yes, I agree with Alan. SumoSprings is very responsive, Russ. Give them a call, they may have a solution for you.
Do these grow hair and kill warts too?
Along with creating world peace, Tommy!
I would like to see a review of Kelderman’s Leaf Spring Axle Air Suspension. Their kit includes shocks and supports the centre yoke with airbags. I can see how these springs stop side to side sway but I am concerned about the extra stress these springs put on the axles. Often people conclude the tire wear they see is caused by their tires when in fact the bouncing and ability to absorb bumps actually bends the axles changing the camber angle and causing premature tire wear.
Is the upper area that the sumo spring contacts made to take this stress? Judging from the video I have my doubts. I would be deeply concerned that they would bend the frame.
These are high density rubber not steel.
I’ve never tried these on a trailer, but I did install them on my Nissan Frontier towing my 23’ trailer. It made a huge difference in weight carrying and handling. I use weight distributing hitch but when hitching up the tongue weight dropped the rear of the truck several inches, taking a curve at highway the truck leaned in the turn. After installing the SUMO springs the truck only dropped an 1 1/2” and it stayed flat in the curves much like a anti-sway bar would do at much less cost plus the weight carrying ability.