RAM ProMaster Hellwig Helper Spring
What is this helper spring made of?
The helper springs have been made of very strong steel. The design allows the spring to reduce sagging from the rear end. It also adds strength to the system so that it can withstand a load of 2000 lbs.
If they are designed with this steel, then does it mean that effects the overall strength of the part?
It actually does. The steel helps the spring stop rear end sag. It also has the strength to allow the spring to handle a load capacity of 2000 pounds.
How does this install?
You mount the helper springs to the factory axle U-bolt plates.
Is there anything else I should know about these that is sort of special?
They have given the springs a heat-treatment. The heat treatment allows the springs to be even more durable and gives them extra strength than if they had not heat-treated them. It should help you absorb bumps and keep your ride much more level and give you a greater sense of safety.
I can adjust these springs independently if I need to do so?
Yes. You are correct. They can be adjusted asymmetrically for your needs.
Does this come with a warranty?
Yes. The manufacturer has a lifetime warranty.