Why use an Equal-i-zer hitch

An Equal-i-zer hitch is used because it combines true weight distribution with integrated, 4-point sway control, which helps keep a tow vehicle and trailer stable, level, and predictable—especially in crosswinds, on uneven roads, or when passing large trucks. In practical terms, it improves steering feel and braking balance, curbs trailer sway without add-on bars, allows normal backing, and is available in capacities suitable for most travel trailers and cargo haulers. Below, we explain what it does, when you need it, how to choose and set one up, and what trade-offs to consider.

What the Equal-i-zer hitch is and how it works

Equal-i-zer is a brand-name weight-distribution hitch from Progress Manufacturing that integrates sway control into the hitch head and spring-bar brackets. Unlike basic ball mounts or add-on friction bars, it’s an all-in-one system designed to both level the rig and resist side-to-side yaw.

Four-point sway control

The hitch creates friction at four points—two in the hitch head and two where the spring bars rest on L-brackets attached to the trailer frame. This constant, mechanical resistance helps damp the small oscillations that can build into sway, reducing the chance that wind gusts, bow waves from semis, or sudden steering inputs will push the trailer off-line. Because sway control is built in, there’s no separate friction bar to add, remove, or disconnect when backing up.

Weight distribution physics

Spring bars act like torsion levers, transferring some of the tongue weight from the tow vehicle’s rear axle forward to the front axle and back to the trailer axles. Restoring front-axle load improves steering response and braking balance while keeping headlights aimed correctly. The net effect is a more level, controlled combination.

Key reasons to use an Equal-i-zer hitch

The Equal-i-zer system addresses multiple towing pain points at once. The following points summarize why many owners choose it over a basic ball mount or separate sway control add-ons.

• Integrated sway control: Four-point friction actively resists yaw without a separate sway bar, and you can back up normally.
• Improved stability and control: Distributes weight to keep the rig level, enhancing steering precision and braking consistency.
• Simplicity and speed: No chains to tension and no extra sway hardware to attach or remove for tight maneuvers.
• Versatility: Available in multiple tongue-weight ratings (roughly 400–1,700 lb) and gross trailer weight capacities up to the mid–five figures, covering most travel trailers.
• Compatibility: Works with most 2-inch and 2.5-inch receivers via appropriate shanks; no need to disconnect for rain or reversing.
• Durability: All-steel construction with serviceable wear points; widely supported in North America with parts and dealer knowledge.
• Value: More affordable than premium “pivot-point projection” hitches while offering stronger sway control than simple friction bars.

Taken together, these benefits make the Equal-i-zer a practical, daily-use solution for families towing RVs, boats, or cargo where confidence and convenience matter.

When you especially need one

While any trailer can benefit from better balance and sway resistance, certain combinations and conditions make a weight-distribution hitch with integrated sway control particularly valuable.

• Heavier trailers: Many automakers recommend or require a weight-distribution hitch above certain loads (often around 5,000 lb GTW); always check your owner’s manual.
• Higher tongue weights: As tongue weight climbs (commonly 400–500 lb and up), rear sag, lightened steering, and headlight mis-aim become more pronounced.
• Tall, boxy RVs: High-profile travel trailers are more susceptible to crosswinds and passing traffic.
• Shorter-wheelbase tow vehicles: SUVs, crossovers, and mid-size trucks benefit from front-axle load restoration.
• Frequent highway towing: Long miles at speed increase exposure to wind and bow waves, making consistent sway damping valuable.
• Mixed loads and trips: If your cargo or water tanks change between trips, adjustable spring-bar tension helps keep handling consistent.

If you recognize these scenarios in your towing, an Equal-i-zer hitch can materially improve comfort and safety margins.

When you might not need it—or should reconsider

There are cases where a weight-distribution hitch (of any brand) is unnecessary or not advised. Consider the following before purchasing.

• Very light trailers: Small utility or teardrop trailers with low tongue weight may not need weight distribution.
• Off-road articulation: For sustained, uneven terrain where maximum articulation is required, a WDH can be limiting; specialized off-road couplers may be better.
• Surge-brake couplers: Some surge-brake systems have compatibility limitations with WDHs; verify with both hitch and trailer-brake manufacturers.
• Vehicle restrictions: A few vehicles with certain frames, hitches, or self-leveling suspensions have limits or procedures for WDH use; follow the tow vehicle manual.
• Fifth-wheel or gooseneck trailers: These use different coupling systems and don’t take a WDH at the bumper receiver.

When in doubt, check both the tow vehicle and trailer documentation—manufacturer guidance overrides general rules of thumb.

Choosing the right Equal-i-zer model

Proper sizing is critical to performance. You’ll want a spring-bar rating that matches your loaded tongue weight and a shank that fits your receiver and height needs.

1. Determine realistic weights: Use a scale or reliable estimate for loaded gross trailer weight (GTW) and loaded tongue weight (TW).
2. Aim for 10–15% TW: Most conventional trailers tow best with tongue weight in this range relative to GTW.
3. Match the bars to TW: Choose a bar set whose rating brackets your actual loaded tongue weight, not the empty spec on a brochure.
4. Pick the right shank: Ensure correct receiver size (2″ or 2.5″) and enough drop/rise to keep the trailer level when hitched.
5. Confirm frame and coupler fit: Verify L-bracket placement on the trailer A-frame and compatibility with any propane trays or battery boxes.
6. Consider accessories: Noise-reducing bracket jackets, longer shanks, or specialty brackets may improve fitment and comfort.

If your TW grows with gear or water, consider a model with a bit of headroom rather than running at the absolute limit.

Setup and use basics

Correct adjustment ensures the hitch actually distributes weight and damps sway. While you must follow the manufacturer’s instructions, the checklist below outlines the general process.

1. Baseline measurements: Record front and rear fender heights on level ground with the vehicle unhitched and loaded as you tow.
2. Head assembly: Install the hitch head and ball; set initial head tilt per the manual to target proper bar preload.
3. L-brackets: Mount brackets at the specified distance from the coupler and height on the trailer frame.
4. Engage spring bars: Use the tongue jack to raise the coupled vehicle and trailer, attach bars to L-brackets, then lower to transfer weight safely.
5. Verify distribution: Aim to restore a portion of front-axle rise back toward unhitched height (follow the manual or tow-vehicle guidance).
6. Level check: Confirm the trailer rides level or slightly nose-down; adjust shank height or head tilt as needed.
7. Torque and re-check: Tighten all fasteners to spec; recheck after the first few trips and any major load change.
8. Road test: Start with a short drive, then fine-tune bar tension or bracket position per the manual if needed.

A careful initial setup pays dividends in stability and tire/brake wear. Re-verify after changes in cargo, water, or passengers.

Maintenance and noise tips

The Equal-i-zer’s friction-based sway control can produce squeaks or pops at low speeds, which is normal. Simple maintenance keeps it performing and limits unwanted noise.

• Lubrication: Grease only the points the manual specifies (typically the hitch-head sockets). Do not lubricate the L-brackets, which need friction to control sway.
• Torque checks: Periodically verify bolt torque on the head, shank, brackets, and ball per manufacturer specs.
• Wear inspection: Look for uneven bar or bracket wear and replace worn components as needed.
• Noise management: Optional bracket jackets or protective pads can reduce squeal without eliminating necessary friction.
• Storage and corrosion: Remove bars when not towing; clean and protect metal surfaces to prevent rust.

Regular attention keeps the system quiet enough for daily use while preserving its core safety function.

Alternatives to consider

If your towing profile or budget points elsewhere, several hitch types compete with the Equal-i-zer, each with trade-offs in cost, complexity, and performance.

• Add-on friction bars: Low-cost sway damping but often require removal when reversing; not as seamless as integrated systems.
• Reese dual-cam systems: Cam-based centering for sway prevention with strong performance once dialed in.
• Blue Ox SwayPro: Chain-style weight distribution with geometry-based sway resistance; quieter operation, different feel.
• Andersen WDH: Lightweight, uses chains and a friction cone; quieter but with different sway characteristics.
• Hensley/ProPride pivot-point projection: Premium systems that change the pivot geometry to virtually eliminate sway, at higher cost and weight.

Your best choice depends on trailer size, tow vehicle, budget, and sensitivity to noise versus absolute sway resistance.

Summary

An Equal-i-zer hitch is a proven, integrated solution for keeping a tow vehicle and trailer stable and level. Its four-point sway control and weight distribution improve steering and braking, simplify use (no separate sway bar, backing allowed), and cover a wide range of trailer sizes. Choose a model that matches your loaded tongue weight, set it up carefully per the manual, and maintain it periodically. For most conventional trailers and family tow vehicles, it strikes an excellent balance of safety, convenience, and value.

What are the benefits of an Equal-i-zer hitch?

With Equalizer Hitch, drivers don’t have to constantly correct the steering, making long drives safer and less stressful. Another key advantage is improved handling. With the hitch keeping the trailer steady, braking and turning feel more natural. Drivers have better control, even on winding roads or steep descents.

Is Equal-i-zer a good hitch?

Year after year, the Equal-i-zer® Sway Control Hitch has been awarded the Gold Trailer Life Readers’ Choice Award by trailer owners across America. Equal-i-zer has received this award twelve years in a row and is the only trailer hitch on the market to ever be awarded Gold.

Do I really need an Equal-i-zer hitch?

If the trailer’s loaded weight is over half the vehicle’s weight, a weight distribution system is recommended. If it isn’t over half, you can still use one; the effects just won’t be as noticeable. Learn how to adjust a weight distribution hitch for level, efficient towing.

Can you back up with an Equal-i-zer weight distribution hitch?

Yes, the Equal-i-zer hitch is designed to allow you to back up and take tight turns with the hitch hooked up.