Used U402 springs, making sure they are good?

How do you tell if used leaf springs are good?

I bought some used U402 stage 1 springs and hammer hangers about a year ago and finally am getting them installed along with new shocks.

They have 6.6 inch free arch height. Visually, they are good without cracks or corrosion.

I’d appreciate any advice!

 

Can't help you, but also interested. I'm looking at buying some used deavers aswell...

 

Would they not last a long time,if there springs wear out with Normal use in the trucks life time there over priced.