Has anyone put Sumo Springs on 3rd Gen?

I just ordered a set of black the other day, expecting delivery this weekend or Monday. With a 30 min install, if they are too firm I'll simply install and remove as needed. I plan on using them for pulling an RV, so it's not like I'll just be hooking up to pull on a whim.

 

They are not supposed to break in. That’s why most people stick to the blue ones as they are rated for less constant weight on them.
You can read up and watch videos here, https://superspringsinternational.com/sumosprings-colors/?amp

 

I have the same use case. 5-6 times a year.

I went with black because I had black on my 2012 and they were unnoticeable.

 

I added sumospings in the rear and up front . I haven’t towed yet . I don’t think the front ones do much for me.

 

If yours are too stiff, you may want to look at blue like others have stated. I have them on mine and they seem to work well. Remember, our trucks arent meant to carry 2000 lbs, and if not constantly weighted down the impact over bumpy roads will be harsh

 

Yeah, I may email sumo springs. I'm sure they deal with this all the time.

 

I have the blue ones & they are perfect while towing & hauling. Once they touch the axle its a smooth ride. My only complaint is the 3/4 inch or so until it touches, you can feel the axle hit the springs empty at times & It'll definitely keep it from bouncing.
You wouldn't want them touching while empty, the ride would be too stiff, and any more space would cause more sag when loaded. Its a happy medium in my opinion.

 

This is my experience with the black ones. Except when the frame hits the black spring, the sudden change in overall spring rate is jarring.

Zero complaints when towing as they are in constant contact

I wish the sumo springs had some kind of quick switch out with a standard bump stop.

 

Just get the blue ones, and itll be just like that

 

Have yet to tow but y'all got me convinced i need them before even attempting. Ordered. Also found promo code for 25% off RVE25

 

If I have minimal towing and/or payload will it be useful to install the blue ones at all? Or just stick with stock setup? Any pros of upgrading this to stock setup?

 

For what it's worth, in my experience with the Yellow Sumo Springs at 2,800lbs capacity. They definitely worked as advertised. When driving unloaded, I did notice they were there. When driving on the highway and hit a bigger bump in the road, mainly when 2 sections of concrete weren't level, it basically stiffened the rear up. And it wasn't as stiff as the Add-A-Leafs I put on my Tacoma. The one inch or so of gap between the Sumo and the axle lets the truck ride like stock most of the time.
I found when I hooked a 7,200 lbs toy hauler to the truck, they just weren't enough. The rear sag was still too excessive. When I hooked the 12' utility trailer with 4 dirt bikes and some gear, the Sumo's were excellent. If I didn't know they were on the truck I'd have thought it was a stock ride with no sag.
Working with SuperSprings was very easy, they answered questions quickly and offer 30 day return if you aren't happy for any reason. I was just a couple days over the 30 days when I pulled them off and I sold them to another member on here. I ended up going with the Air Lift air bags for towing the toy hauler. If I didn't have the toy hauler I'd have happily kept the SumoSprings.