How to Find Correct Replacement Leaf Springs and Shackle Straps for 2007 Cyclone Toy Hauler

Updated 03/25/2025 | Published 03/23/2025

Question:

Hello, I have a 2007 cyclone 3912 toy hauler, all my spring are almost completely flat and my back springs are better other way . It’s a 3 axle trailer 5200 lb Lippert axles loaded springs eye to eye are 26.5 . I need help determining what springs and shackles to buy .

asked by: Matt E

Expert Reply:

Hey Matt, thanks for reaching out!

I'll need to know the length of your leaf springs when they are unloaded in order to help you find the right length. That and if you can let me know the length of your shackles (center eye to center eye) I can let you know what will work for your setup.

I've linked our selection of leaf springs and shackle straps for you to filter through, but I'll be looking through this same list when I hear back from you!

expert reply by: Jon G

Matt E.

3/24/2025

Hello, thank you for your help. I just checked and it’s 25 1/2 inches center of eyelet to center of eyelet unloaded. Also, I was hoping to get a little bit heavier spring. These are a four spring for a 5200 pound. Axle

Jon G.

3/24/2025

@MattE Thanks! For that I recommend the 6K 5-Leaf Double-Eye Spring # e34SR. This measures 25-1/4" long so it's a little shorter than your current ones, but leaf springs will naturally elongate some over time so the 25-1/4" length will still work out just fine. What is the length of your shackles?

Matt E.

3/24/2025

@JonG 7 inches across for the one that goes from leaf spring to leaf

Jon G.

3/24/2025

@MattE Are you needing to replace the equalizer, or your shackles? The equalizer is the pivoting point that connects to the hanger, while the shackles are the small metal pieces that connect the leaf spring to the equalizer. And do you have a 2-axle or a 3-axle trailer? In your first post you said 3-axle, but in your comment, you said there are 4 springs which would mean it only has 2 axles.