Upgraded Trailer Axle Solution for 4x8 Harbor Freight Trailer

Question

Question:

Hi, Ive got a 4x8 Harbor Freight trailer that I am planning on using for a 5x8 camper build. I would like to widen and upgrade the axle to probably a 3500lb one with larger wheels and tires. Need recommendation for the proper axle. The spring centers are at 46.

asked by: Barry Y

0

Expert Reply:

We don't have a standard axle that fits based on the spring seat center dimension you listed so your best option would be the Timbren Axle Less kit part # ASR35HDS02 which has a 3,500 lb capacity, a 4 inch lift built into it, and also attaches directly to the trailer frame and uses a rubber spring instead of leaf springs.

expert reply by: Jameson C

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Answer 1

The Dexter Trailer Idler Axle w/ Hubs - EZ-Lube - 5 on 4-1/2 Bolt Pattern - 60" Long - 2,200 lbs #20545I-EZ-60-15 is a great starting point to upgrade your trailer. This will give you a standard size axle with good bearings, hubs, and EZ-lube…

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Answer 2

We can very likely get this worked out. Can you tell me how far it is from spring center to spring center? This is the distance from the middle of one spring to the middle of the other. We will also need the hub face to hub face measurement. This is…

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Answer 3

The parts and quantities do look mostly good, but you would only need one of the hanger kits #APS2. These are actually sold as a full kit for one axle. As to said axle, though, it would be a good idea to double check that your spring seats match the…

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Answer 4

From what I could find, the Harbor Freight trailers do say not to exceed 45 miles per hour in the owners manual. That being said, the tires they use are not rated very high and may be the limiting factor. The trailer you have looks to use a 5 on 4…

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Answer 5

From my research on the Harbor Freight 4x8 folding trailer uses 4.80-12 tires on a 12 inch wheel for the 1195 lb capacity trailer and a 5.30-12 for the 1720 lbs capacity trailer. It is a good idea to check your existing tires to see which size they…

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Answer 6

In order to swap out your 13" wheels and tires with 15" you will need to match up the bolt pattern and make sure there is enough clearance. A wheel and tire like the Karrier ST205/75R15 Radial Trailer Tire with 15" White Spoke Wheel…

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Answer 7

Since you want to change your trailer hubs to the 5-on-4-1/2 bolt pattern I suggest you select a 60-inch axle kit that includes idler hubs, such as one of the two kits shown on the linked page. These two 2K-rated axle kits include 5-on-4-1/2 hubs,…

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Answer 8

Modifying a trailer axle is not recommended because they are designed specifically to handle the weight the way that they are. By making the axle longer it can cause the axle to flex under the weight of the trailer and lead to all sorts of problems.…

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Answer 9

I recommend #20545I-EZ-60-10 Dexter Idler Trailer Axle w/ Hubs - EZ-Lube - 5 on 4-1/2 Bolt Pattern - 60" Long - 2,200 lbs. I like this axle because of the EZ-Lube simple lubrication. You will also want to pick up a U-Bolt Kit #APUBR-10 for…

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Answer 10

Harbor Freight trailers are normally not able to work well with other axles because they are not made to industry specs. We do have a kit that will allow you to replace your trailer axle and suspension that will also fit the tires you are seeking. It…

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Answer 11

I can confirm that the parts listed below are all compatible. I do recommend replacing your spring hangers since you are upgrading everything else on your suspension. The Single-Axle Trailer Hanger Kit for 2" Slipper Springs - 3-3/4" Tall…

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Answer 12

The hub and drum assemblies included with Dexter axle, #35545E-ST-89, are too large to fit the 12 inch wheels on Harbor Freight trailer 69897. If the length measurements are correct (89 inches from hub face to hub face and 74 inches between spring…

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Upgraded Trailer Axle Solution for 4x8 Harbor Freight Trailer

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