Can I Replace the Leaf Spring on My Boat Trailer with a Flat End Leaf Spring?
Updated 09/26/2025 | Published 05/02/2025
Question:
I have a single axle boat trailer with broken springs. Can I replace 1 3/4 x 30 radius end springs with flat end springs?
asked by: John C
Expert Reply:
Hello John,
Great question. If you have a double eye leaf spring on the trailer, then you will not be able to replace it with the 3-Leaf Slipper Spring w/ Flat End for 2,900-lb Trailer Axles - 30" Long # e49SR.
What kind of leaf spring do you have on your set-up? What is the axle capacity? What is the measurement from eye to eye with the weight off the spring? It is normal to have a measurement that is longer than what you need as they do stretch over time. I attached some images to show where to measure the leaf spring. Please reply with those answers so I can get you the right leaf spring.
(click to enlarge)
(click to enlarge)
Product Page this Question was Asked From
3-Leaf Slipper Spring w/ Flat End for 2,900-lb Trailer Axles - 30" Long
- Trailer Leaf Springs
- Slipper Springs
- 9/16 Inch Eye
- Nylon Bushings
- 2900 lbs
- 1-3/4 Inch Wide
- 3 Leaf
- 30 Inch Long
- Standard Grade
- etrailer
more information >
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Kate F.
9/26/2025
Hey John, did you have a chance to check the type of leaf spring and the axle capacity on your trailer? I'm asking because I want to make sure you get the right replacement and help others in a similar situation.