Can Slipper Springs be Used to Replace Double Eye Trailer Leaf Springs

Updated 10/30/2024 | Published 10/29/2024

Products Featured in This Question

4-Leaf Slipper Spring w/ Flat End for 3,700-lb Trailer Axles - 30" Long

(263)

$52.41

4-Leaf Double-Eye Spring for 4,000-lb Trailer Axles - 26" Long

(2045)

$68.25

Question:

Hi, I’m looking for some leaf springs and mounting kit. Leaf springs from eye to eye are 26 inches and 1- 3/4. Currently have 3500 pound springs but would like to step up another size. I was looking and I think the 30inch slipper spring would work. Am I correct in that assumption? I also have square axles and most kits I saw only had round axle bolts

asked by: Allen N

Expert Reply:

Hey Allen, good to hear from you!

You can swap to the 30" Slipper Spring # e89SR, but it will require you to get a whole new hanger kit installed on your trailer which means cutting the old ones off and having new ones welded on by a professional.

A much better option to beef up your suspension would be to install the 4K Double Eye Leaf Spring # e22YR because you'll continue to use the rest of your current components.

expert reply by: Jon G

Allen

10/30/2024

So I got the wheels off this morning. It does not look like I have shackle straps. I have bolts through the equalizer and hook ends on the springs. Is there a difference in the ride on adding leafs but keeping the same weight rating? Is there a spring kit that comes with the u-bolts for a Square tube axle? Looks like most are round tube

Jon G.

10/30/2024

@Allen Do you have double-eye or slipper-style leaf springs? For the U-Bolt kit, we have the kit # CE23102 for 1-1/2" square axles or the kit # CE23103 for 2" square axles.

Allen

10/30/2024

@JonG i have slipper leafs with a hook

Jon G.

10/30/2024

@Allen Thanks for the information! In that case, I recommend picking up the 4-Leaf Slipper Spring w/ Hook End for 4,000-lb Trailer Axles # SP-230275. Having the extra weight capacity is just fine, and the length is similar to what you currently have so it will fit well. Slipper spring setups don't use a shackle strap on either end so you're good there as well!