Another Sumospring Question

Thanks for everyone's patience. I have searched and read until my head hurts. I am planning to install a pair of sumosprings on my 2017, DCTRDORLB. I have a shell, heavy tool boxes, and mat. I also tow a 19.5 ' fiberglass center console boat. I see many many folks have installed the 610-40 and are happy with them on their gen3s. What is the current recommendation 610-40 or the newer smaller 612-47.

Thanks in advance.

James

 

I ran 610-40 with a dclb and a shell. Anything more than a minor bump in the road was jarring. They handle the weight good but I went with a air bag setup.

 

I second this, I've had the same experience. The 610-40 keeps the back from sagging with the weight of the shell/tools, but bigger bumps are definitely harsher. Debating an airbag setup, or just biting the bullet and lifting.

 

Well guys not looking too good. Thought this would be the do all cure all. Thanks for you time and information.

 

had both. stuck with the short ones so the frame isn't resting on them. that's where the jarring bumps come from. i keep no weight in the bed, i'm sure loaded down on the short ones wouldn't be so bad. something like the more you compress them, the more they fight back.

 

I have the longer one. I carry a lot of weight in back for most for the year so I figured the frame would rest of the springs either way. Went with the bigger one for better support. Maybe it’s the all the weight (probably 350-400lbs) but I don’t think the bounce is too bad.

 

Sounds like the sumo's are a little ruff. Would air springs be a better option?

James

 

If your carrying weight all the time just add a leaf, or buy a new leaf pack

 

1.5" lift and had the taller ones initially. They didn't quite make contact, but the ride was fine. After adding a shell, they were touching and decided to go with the newer, shorter ones. Now have a little over .5" of space and the ride is great. I think the key is to either ride on the sumo springs for consistency during compression or leave some room to let the leaf springs work before the sumo's engage. Much simpler than air springs so I'm still good with this direction.