Replacement Leaf Springs for a Big Tex 35SA-10BK4RG Trailer

Updated 09/12/2025 | Published 05/17/2025

Question:

Which of your leaf springs fit a Big Tex 35SA-10BK4RG trailer? It has a 3,500 lb rated axle. Thanks.

asked by: N. S

Expert Reply:

I am sure we have a set that will work but there's no database that shows me what part numbers your springs are. Big Tex doesn't list this information online either.

What I need you to do is jack up one side of your trailer and get the weight off of the suspension. Once you do this you'll want to measure from the center of the bolt hole on one side of the leaf spring to the center of the other. The springs stretch out over years of use and this is the only way to get an accurate measurement for a replacement spring. I'll also need to know how many leafs yours have.

If you could leave this information in the comment box below. I'd be happy to find you the correct springs.

expert reply by: Jerred H

Jerred H.

9/12/2025

Hey, did you have a chance to measure the leaf spring on your trailer and find out how many leafs it has? I'm here to help you find the right springs once you have that information.