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  Equal-i-zer 90-00-0400 Sway Control Hitch 400 / 4,000 lb Includes Shank

Equal-i-zer 90-00-0400 Sway Control Hitch 400 / 4,000 lb Includes Shank

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: $527.56
MFG P/N: 90-00-0400
MFG: Equal-i-zer
UPC #: 799530709438
Weight (lbs): 88

Availability: In Stock
Product Code: 94-6475

Description Instructions
Equal-i-zer offers a unique two-in-one design that combines weight distribution with sway control in one easy to use unit. This kit has everything you need except the hitch ball and the tools.  4-Point Sway Control provides superior sway control performance. No add-on sway bars are needed. No drilling or taping makes installation quick and easy.  Standard package includes built-in sway control, hitch head, standard shank (3" drop / 7" rise x 12"), spring arms, snap-up lever, installation hardware and owners manual. Does not include hitch ball.  Maximum 400 lb tongue weight and 4,000 lb trailer weight.

Equal-i-zer 90-00-0400 Sway Control Hitch 400 / 4,000 lb Includes Shank

Additional Product Information
Weight Distribution: Weight distribution is the ability of a hitch to transfer some of the tongue weight of the trailer from the rear axle of the tow vehicle to the front axle of the tow vehicle, and backward to the trailer axles. Without weight distribution the tow vehicle “teeter-totters” on the rear axle of the tow vehicle, and un-weights the front axle. Proper weight distribution transfers weight back to the front steering axle, forcing it back to the ground. Proper weight distribution also adds performance to the integrated sway control feature of your Equal-i-zer hitch. The Equal-i-zer hitch requires a minimum tongue weight of at least 10% of gross trailer weight. This tongue weight gets distributed, and helps generate the friction needed to reduce trailer sway.

Sway Control: Integrated sway control is a built-in, patent pending feature of your Equal-i-zer hitch. Once the spring arms are tensioned, the sway control is in force. Integrated sway control works through the connection between your spring arms and L-brackets, and between the sockets and hitch head. The Equal-i-zer hitch takes advantage of the steel-on-steel friction generated at these points to help reduce trailer sway. This added friction makes it much more difficult for the trailer to sway side-to-side while its being towed, as is usual when you encounter a gust of wind, or passing semi. When set up well and properly adjusted for your load, the Equal-i-zer can noticeably reduce sway.

The Equal-i-zer Engineering Behind The Hitch

Sway Control Hitch

1. Sway Control Brackets:

Rigid trailer attachments work with friction sway control to combat trailer sway. Brackets are height adjustable to control the amount of weight distribution tension on the spring arms.

2. Spring Arms:

The spring arms serve two purposes. When raised onto the sway control brackets they transfer trailer tongue weight evenly to the tow vehicle. They also work with the friction sway control to reduce trailer sway.

3. Downward Pressure:

Downward pressure from trailer tongue increases friction sway control. Trailer hitch ball mounts here.

4. Upward Pressure:

Sway control brackets distribute weight by maintaining upward pressure on spring arms. The amount of pressure on the spring arms is a factor of trailer tongue weight and vehicle suspension. The friction sway control utilizes this pressure to control trailer sway.

5. Friction sway control:

Friction is enhanced by downward pressure from trailer tongue and upward pressure on spring arms. These opposing pressures come together to create an unequaled sway control system.


  • Maximum tongue weight: 400 lbs.
  • Maximum gross towing weight: 4,000 lbs.
  • Application: 2" x 2" trailer hitch receiver rated for the tongue & towing weights for your application.
  • Sway-control bracket positioning: 29" - 32" back from center of coupler
  • Maximum trailer frame height: 6"
  • Shank length: 12"
  • Maximum rise: 7" from top of hitch receiver opening
  • Maximum drop: 3" from top of hitch receiver opening
  • Spring-bar dimensions: 36" long x 1" wide
  • Limited lifetime warranty
  • Made in the USA

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