Affiliate disclosure: As an Amazon Associate I earn from qualifying purchases. If you buy through an eligible link below, RVGearScout may receive a commission at no extra cost to you.
A weight-distribution hitch can restore front-axle load and improve control when a properly rated tow vehicle pulls a compatible trailer. Equal-i-zer’s design integrates four points of friction sway control, but the correct model and setup must be based on measured, loaded weights—not the trailer’s empty brochure number.
Equal-i-zer model range
The manufacturer offers nominal tongue-weight models of 400, 600, 1,000, 1,200, 1,400 and 1,600 pounds. Corresponding hitch names are commonly shown as 4K, 6K, 10K, 12K, 14K and 16K. Most use a 2-5/16-inch ball; the 4K model is the exception. The standard shank fits a 2-inch receiver, with other shank options available for different receiver and rise/drop needs.
Choose the rating from real loaded weights
- Load the trailer as it will travel: batteries, propane, water if carried, food and gear included.
- Measure actual tongue weight with suitable equipment or at a scale. Include cargo carried behind the tow vehicle’s rear axle because it affects the load the spring bars must manage.
- Confirm the trailer’s loaded weight and tongue weight stay within the tow vehicle, receiver, hitch, axle, tire and trailer ratings.
- Select the Equal-i-zer model using the manufacturer’s current sizing guidance. A model that is too light cannot do its job; one that is unnecessarily stiff can harm ride and handling.
Compatibility checkpoint: Equal-i-zer specifies that the standard sway-control brackets mount roughly 27 to 32 inches back from the coupler. Propane trays, battery boxes, frames, trim and other equipment can interfere. Measure the actual A-frame before buying.
Use measured loaded weights and verify the exact model, ball, shank, receiver size, rise/drop, and bracket clearance.
Setup is part of the product
Correct ball height, head angle, bracket position and spring-bar loading determine how the hitch transfers weight. Start on level pavement and follow the current Equal-i-zer manual. Measure tow-vehicle wheel-well heights or, better, compare axle weights before and after setup. The goal is the tow-vehicle manufacturer’s specified front-axle-load restoration—not simply making the trailer look level.
Torque every fastener to the current manual’s specification, keep required surfaces lubricated and leave friction surfaces dry where instructed. Recheck setup after changing trailer loading, tow vehicles, hitch components or ride height. A professional hitch installer is the right choice if any measurement, torque step or frame clearance is uncertain.
What sway control cannot fix
Integrated sway control is valuable, but it cannot make an overloaded, poorly balanced or mechanically unsound combination safe. Maintain appropriate tongue weight, load low and secure, use correctly inflated rated tires, service brakes and suspension, and reduce speed for wind and road conditions. If sway begins, stay calm and follow the tow vehicle and brake-controller manufacturers’ guidance.
Our take
The Equal-i-zer is compelling because weight distribution and four-point sway control are integrated into one established system. Its performance depends on choosing the right rating and performing a measured setup. Budget time and, if needed, professional labor for both.
Primary source: Equal-i-zer official product information. Confirm current ratings, dimensions and instructions for the exact model before purchase or towing.