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4-Leaf 3,500 lb Axle Leaf Spring for Carry-On Trailer  

Updated 04/02/2026 | Published 03/20/2026

Question:

Hello, I have A Dexter Idler Axle 3K7764 3500lbs for a carry-on trailer , currently it has a 3 leaf spring I like to go to 4.Would you advise this? Thanks

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Expert Reply:

Hey Marc, to pick out the correct 3,500 lb axle leaf spring for your trailer you would need to measure the length of what you have when there isn't a load on the suspension. The part # DX23CR is a 4-leaf like you are looking for and is a very popular length of 25-1/4 inches but you would want to measure to be sure. Let me know what your length is and I'll verify what you need!

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Jameson C
Marc profile picture

Marc

4/2/2026

Hi What part of the axle do I measure from the back plate of the spindle or at the end of the spindle?

Jameson C. profile picture
Etrailer Expert

Jameson C.

4/2/2026

@Marc For an axle replacement? You'd need to measure from hub face to hub face and between the centers of the spring seats.

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