Can the Leaf Springs Be Upgraded On a Lippert 3,500 Lb Axle

Question

Question:

This is a tandem axle travel trailer, are you recommending two sets of Sumo spring helpers? I would rather install the heavy duty leaf springs. 25 1/4 eye to eye. Thanks

asked by: Joe S

1

Helpful Expert Reply:

It is possible to upgrade the leaf springs on a trailer to a higher rated set but I do not recommend this as it can create a rough ride. The better option would be to install the SumoSprings Trailer Helper Springs part # TSS-107-40 for overslung or part # TSS-106-40 for underslung axles. These will offer both additional support without decreasing the ride quality.

If you would still like for me to recommend a set of upgraded leaf springs, I'd need to know the unloaded length from eye to eye.

expert reply by: Conner L

1

Joe S.

7/2/2020

This is a tandem axle travel trailer, are you recommending two sets of Sumo spring helpers? I would rather install the heavy duty leaf springs. 25 1/4 eye to eye. Thanks

Reply

Conner L.

7/2/2020

Correct, you'd need to use two sets of the SumoSprings Trailer Helper Springs or upgrade to the 4-Leaf Double-Eye Spring part # e28SR which would be about a 1,500 lb upgrade.

Reply

Answer 1

If what you have now Chad is pretty flat at 26 inches then the best replacement size would be 25-1/4 inches like you mentioned. Since you wanted to increase the capacity you would want the part #e57SR which is for 4k trailer axles.

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Answer 2

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Answer 3

Over time, any suspension components can fail and need to be replaced. Since you said a shackle broke now would be a good time to inspect all of the suspension components and replace any that show signs of damage or uneven wear. It is always best to…

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Answer 4

Yes, you could use leaf springs for a 4,000 lb axle, like part #e57SR (rated for 2,000 lbs each), with a 3,500 lb axle but it will make your ride a bit more stiff. The only times that a leaf spring would become damaged is if it is overloaded or has a…

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Answer 5

A replacement for your Shelby 5138 is the Fulton Fas-Lok Coupler, 2" Ball, 3" Channel - 3,500 lbs #F223000301. This is a great quality coupler that is cost effective as you referenced. I've attached a review video of this product to…

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Answer 6

You shouldn't loose any wheel clearance with the Dexter E-Z Flex Suspension Kit. First you will want to see which of the Equalizers you need. There is a 6,000lb Equalizers #K71-654-00 (5-5/8") and 8,000lb Equalizers #K71-655-00…

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Answer 7

Yes, you can use the Dexter E-Z Flex Suspension Kit #K71-652-00 with 31 inch axle spacing because these equalizers are a match for your current Equalizer #TREQ104. We have contacted Dexter about this previously and so long as the equalizers are the…

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Answer 8

We have 2,000 lb axle trailer leaf springs like the #072-017-00 but to pick out the correct ones for your Keystone I'd need to know what length of leaf springs you need which you'd have to measure without a load on the springs. These are 21…

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Answer 9

To find the proper replacement equalizer for your horse trailer you will need to take a couple of measurements. Measure from the center of the front hole to the center of the rear hole. Then measure from the center of the top hole down to the center…

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Answer 10

The Dexter E-Z Flex Suspension Kit #K71-652-00 is the kit you want. It's the correct size and capacity for your setup and comes with the upgraded HD shackles and wet bolts as well. This will cushion your trailer suspension well and While we…

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Answer 11

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Answer 12

To upgrade you current leaf springs, you will need to up their capacity to that of a 3,500 pound axle. The 3 Leaf Double Eye Spring #e59SR is the replacement I suggest. It measures 23 1/8 inches long from eye to eye and is the closest we have to your…

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