Helper Spring Solution for 2021 Toyota 4Runner Towing 3700 lb Travel Trailer

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Question:

i puchased anew 2021 4runner a few weeks back,and will be towing a 17 viking tt with a loaded weight of 3700lbs,empty its 2700,two questions,the factory hitch bolts to the cross member,due u guys know what the rated tongue wieght is by chance? this hitch doesnt look like to me its rated at 5000lbs but the dealer swears it is,second is the squat when im hooked up, was 1.75-2.00 inches would the timbren set up work to correct the squat? rated towing @5000lbstongue weight,who knows,dealer says 500lbs, im pretty skeptical about these specs,if the timbren would correct the squat i will buy them,please advise

asked by: Brad

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Expert Reply:

I wasn't able to determine the capacities of the OEM hitch on your 2021 Toyota 4Runner, the only references I could find was to the 500lb TW/5000lb towing capacity of the vehicle itself 'When Properly Equipped'. In the list of equipment needed to achieve that, the 'integrated towing hitch receiver' was mentioned, so it would be a very safe assumption that the hitch capacity would match that of the vehicle.

With a loaded weight of 3700 lbs, the tongue weight would range from 370-555 lbs, so you'll want to watch how you load the travel trailer so you don't exceed that 500 lb tongue weight limit.

The Timbren # TTORSEQ you mentioned would help with that sag by offering up to 6000 lbs of additional support but Timbrens can also make for a fairly rough ride that you might not be happy with.

The SumoSprings, part # SS78DR would be a better choice because they're made of a softer material that would provide a significantly better ride quality. They offer up to 1000 lbs of additional support which is plenty to handle any sag caused by the tongue weight of the travel trailer you mentioned.

I've linked to a product description video for the SumoSprings # SS78DR helper springs I mentioned.

expert reply by: Mike L

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Answer 1

For sag from towing a trailer the best recommendation I can make is actually a weight distribution system. Suspension enhancement will help level your truck while towing. But the advantage to a weight distribution system is that it levels the vehicle…

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Answer 2

Between the 1,400 lb SumoSprings Solo Custom Helper Springs #SS68DR and the 1,800 lb Kit #SS78DR I recommend going with the 1,800 lb kit. These won't affect your daily drive but will offer the support you need when you are going Overlanding. If…

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Answer 3

The difference between the Class II and Class III hitches has to do with their Gross Trailer Weight (GTW), their Tongue Weight (TW), and their Hitch Receiver Size. Class II trailer hitch receivers have a 1-1/4 inch receiver and can be rated up to…

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Answer 4

A 4-Way trailer connector has the basic lighting functions only; running lights, left turn signal and brake lights, right turn signal and brake lights, and ground. A 7-Way has these functions and a 12 volt circuit, a circuit for electric trailer…

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Answer 5

The #84 spindle is just a common way to identify the spindle dimensions typically used for 3,500 lb axles. So instead of listing out the parts, people can just say they have #84 spindles and it's easier to know what fits it. The CE Smith Trailer…

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Answer 6

It sounds like you are speaking of the wires for the brake magnets. If this is correct, you will need to connect one of the wires to the brake controller output wire on your trailer connector and the other wire will need to be grounded to a clean…

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Answer 7

If you just need a 4-pin to 7-pin trailer wiring adapter, then you can use part #C57672. This will plug into the 4-pin trailer connector on your brother's vehicle and give him the 7-pin socket for the trailer. Keep in mind, this will only give…

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Answer 8

Since the pin weight of your camper is 2.1k, I recommend going with the LoadLifter 5000 opposed to the 7500. While technically there is not reason you couldn't use the 7500 kit, it really is not necessary for a camper like yours. Generally the…

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Answer 9

Hey Brandon, I would strongly recommend sticking with the Tekonsha RF brake controller part #TK94FR. We know this works really well and it sounds like it worked well for you too. The Curt Echo is not reliable enough for me to really ever recommend it…

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Answer 10

The Redarc Tow-Pro Liberty #RED24FR is the way to go over the Elite #RED44FR as you get the nicer functions of the Elite at a lower price. The Elite has the ability to be the more preferred proportional style of controller as well as a time-delayed…

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Answer 11

That's a very good question, we tend to be extra cautious and say to use 10 gauge wire because that would be more than enough. When you get into longer trailers that will end up using a lot of wire the heavier gauge wire becomes more necessary.…

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Answer 12

Yes, it will work. You'll just need to cut the Lance 6-pin connector out and rewire it into the etrailer Trailer Wiring 7-Way Upgrade Kit w/ Junction Box and RV Style Connector item #e99011. Here are the individual functions of that Lance 6-pin:…

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Helper Spring Solution for 2021 Toyota 4Runner Towing 3700 lb Travel Trailer

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