Community Forums

TCHB · 03-12-2013, 02:46 PM

2007 National Dolphin

Just ordered the front 2 SUMO front springs. Should get them in a couple of days and see how they work.

cannon man · 03-12-2013, 05:26 PM

let us know. are they stiffer or softer than stock?

TXiceman · 03-12-2013, 07:13 PM

Once you get the new springs on, you will need to get the front end aligned for the new ride height.

ken

ahicks · 03-12-2013, 07:21 PM

I used these when I did our 94 34' HR. 140. shipped for the pair.

350-6560SD

Here's a video you might be interested in as well.

how to install coil springs SuperSteer motorhome ride height eliminate air bags RV - YouTube

M&EM · 03-12-2013, 09:02 PM

Quote:

Originally Posted by TXiceman

Once you get the new springs on, you will need to get the front end aligned for the new ride height.

ken

The OP doesn't say what chassis he has.

If it is a workhorse and the SumoSprings are the airless yellow, solid poly urethane type, then there should be no affect on ride height...

I installed these on my rig two years ago. I did feel an improved ride that I would describe as firm and more stable. The kit came with a set of shims that basically extended the reach of the Sumo spring closer to the axle. Using these shims made the ride harsher. Removal of the shims improved the ride to the above description. Either way caused no height change as the springs do not contact the axle.

Marty

TCHB · 03-13-2013, 07:45 AM

They are the yellow ones that bolt on to where the old bump stops are located.
They way I understand it they have each a #1500 weight limit and will be almost touching the lower frame when bolted into place. When you hit bumps they are suppose to dampen the ride. We will know soon. I will take pics when I put them on.