Do All Weight Distribution Hitches Have Sway Control?

This is the most expensive misunderstanding in the category. An owner with a trailer that wanders buys a weight distribution hitch, fits it, and finds the rig sits level and still wanders. Nothing was faulty and nothing was mis-set - the hitch simply was not sold to do that job. The two functions look similar from outside because they use the same bars and the same head, but they are achieved differently.

Weight distribution works with leverage. The spring bars are tensioned between the hitch head and brackets on the trailer A-frame, which pries the two apart and redistributes the tongue load so the tow vehicle's front axle keeps its share and the trailer's axles take some back. That is what cures a sagging rear end and restores steering and headlight aim.

Sway control works with friction or geometry. Something has to resist the trailer rotating about the ball - a friction pad, a cam that wants to return to center, or friction engineered into the sockets the bars sit in. None of that is a by-product of tensioning the bars. It has to be designed in or added on. Weight distribution against sway control works through which of the two your symptoms actually call for.

• Look for sway in the product name or feature list. Makers that build it in say so, because it is what justifies the price. Silence usually means absence.
• Look at the bracket the bar sits in. A plain hanger with a chain is distribution only. A bracket with a shaped socket, a friction face, or a cam arrangement is doing sway work.
• Count the parts in the box. A hitch with integrated sway control has no separate diagonal bar. A kit with one in the box is adding it on.
• Check whether the add-on sway bar was sold separately. On a used hitch this is the usual story - the original owner bought the kit, the bar got lost, and the hitch now distributes weight only.
• Ignore the word anti-sway in isolation. It gets applied loosely in listings. The specific mechanism is what tells you, not the adjective.

Quick picks

Tap any row to jump to the full write-up. How these are chosen - and what we do and do not claim to know - is published in full on our research methodology page.

#	Product	Best for	Our read	Price
1	Equal-i-zer 4-point Sway Control Hitch Best built-in sway control	Travel trailers that already sway	Friction designed into four points, nothing bolted on	Check price on Amazon→ #ad Affiliate link - we publish no price; Amazon shows the current one
2	CURT Round Bar Weight Distribution Hitch with Sway Control (14K) Best mid-weight option	Mid-size travel trailers	Round bar distribution with sway control included	Check price on Amazon→ #ad Affiliate link - we publish no price; Amazon shows the current one
3	Fastway e2 Weight Distribution Hitch with Built-in Sway Control Best first setup	A first weight distribution hitch	Distribution and sway control in one simple unit	Check price on Amazon→ #ad Affiliate link - we publish no price; Amazon shows the current one
4	CURT Sway Control Kit Best add-on if yours has none	Light trailers that wander	Friction bar for a hitch with no sway device	Check price on Amazon→ #ad Affiliate link - we publish no price; Amazon shows the current one

1. Best built-in sway control

Equal-i-zer 4-point Sway Control Hitch

Equal-i-zer · Best for travel trailers that already sway

The reference point for integrated sway control. Friction happens at four places at once - both L-brackets and both sockets - so resistance is always on rather than something you remember to engage. Setup is bracket-height and bar-angle work, and it rattles; both are the price of a system with no separate parts to forget.

Published specifications

Models offered (gross trailer weight)

4,000, 6,000, 10,000, 12,000, 14,000 and 16,000 lb source

Tongue weight rating

Matched to each model: 400, 600, 1,000, 1,200, 1,400 and 1,600 lb source

Sway control points

Four - two in the hitch head sockets, two at the rigid trailer brackets source

Warranty

Limited lifetime warranty source

What works

• +Sway resistance is built into the geometry, so there is nothing to connect or disconnect at the ramp
• +Works in reverse and in the wet, unlike a friction bar you have to release
• +One assembly rather than a hitch plus a bolt-on sway bar

What does not

• −Audible rattle and creak at low speed is normal and surprises first-time owners
• −Bracket height and bar angle have to be set properly or the sway control does little

Skip it if

Skip it if your loaded tongue weight sits well inside your receiver's weight-carrying rating and the truck stays level - you would be buying hardware to solve a problem you do not have.

Check price on Amazon→

#ad Affiliate link - we publish no price; Amazon shows the current one

Raw specifications: Equal-i-zer’s own page. We earn nothing on that link.

2. Best mid-weight option

CURT Round Bar Weight Distribution Hitch with Sway Control (14K)

CURT · Best for mid-size travel trailers

A conventional round-bar system with integrated lubrication and sway control, rated to 14,000 lb gross and 1,400 lb tongue. The built-in lubrication matters more than it sounds: a dry weight distribution head is the usual source of the groaning people mistake for a failing hitch.

Published specifications

Gross trailer weight

14,000 lb source

Tongue weight

1,400 lb source

Shipping weight

102 lb source

What works

• +Integrated lubrication at the head, which is where the noise usually comes from
• +Round bars sit lower and clear more trailer tongues than trunnion bars
• +Limited lifetime warranty

What does not

• −Round bars hang lower than trunnion bars and are the first thing to catch on a steep driveway
• −Sway control here is a function of the head, not an adjustable four-point system

Skip it if

Skip it if you regularly cross steep transitions - a round bar is the lowest part of the whole rig and will find the pavement before anything else does.

Check price on Amazon→

#ad Affiliate link - we publish no price; Amazon shows the current one

Raw specifications: CURT’s own page. We earn nothing on that link.

3. Best first setup

Fastway e2 Weight Distribution Hitch with Built-in Sway Control

Fastway · Best for a first weight distribution hitch

Sway control by steel-on-steel friction between the bars and their brackets, with no separate friction bar and nothing to remove before backing up. Available in round and trunnion bar versions, which is the detail to get right: trunnion for ground clearance, round for a lower-profile head.

Published specifications

Trunnion bar models

4,500 / 6,000 / 8,000 / 10,000 / 12,000 lb gross trailer weight source

Round bar models

6,000 / 8,000 / 10,000 lb gross trailer weight source

Maximum tongue weight

450 / 600 / 800 / 1,000 / 1,200 lb, matched to the model's trailer rating source

Hitch ball

2-5/16 in ball pre-installed on the 6,000, 8,000, 10,000 and 12,000 lb models; added separately on the 4,500 lb trunnion source

Sway control

Built in via rigid brackets - no chains or add-on bars to remove for backing, turning or wet weather source

What works

• +Nothing to engage or disengage - friction is always working
• +Sold in both round-bar and trunnion-bar versions for different A-frame heights
• +Simple enough that a first-timer can set it up from the manual

What does not

• −Friction surfaces must stay clean and un-greased, which is the opposite of most hitch maintenance habits
• −Noisy in tight, slow turns

Skip it if

Avoid it if you tow mostly on dirt or gravel - grit on the friction faces is exactly what the design does not want.

Check price on Amazon→

#ad Affiliate link - we publish no price; Amazon shows the current one

Raw specifications: Fastway’s own page. We earn nothing on that link.

4. Best add-on if yours has none

CURT Sway Control Kit

CURT · Best for light trailers that wander

A single friction bar between the trailer tongue and the ball mount, with adjustable tension. It damps yaw; it does not transfer load. On a light trailer that wanders a little it is the cheapest honest fix, and on a heavy one it is not enough on its own.

Published specifications

Finish

Carbide black powder coat source

Shipping weight

14 lb source

What works

• +Simple, serviceable and easy to fit to an existing ball mount
• +Tension is adjustable, so you can match it to the trailer
• +Takes minutes to add to a setup you already own

What does not

• −Must be disconnected before backing up tightly or in icy conditions
• −Damps sway but does nothing about a tow vehicle that is squatting

Skip it if

The wrong answer if your truck sags at the back when the trailer is on - that is a load-distribution problem and a friction bar will not touch it.

Check price on Amazon→

#ad Affiliate link - we publish no price; Amazon shows the current one

Raw specifications: CURT’s own page. We earn nothing on that link.

You have two routes. The cheaper one is an add-on friction sway bar, which mounts diagonally between the hitch and the trailer tongue and damps rotation with a clamped friction pad. It works, it is inexpensive, and its drawbacks are that it has to be released for sharp reversing and that its damping is constant rather than proportional to how far the trailer has rotated.

The better one, if the trailer is heavy or tall, is replacing the hitch with a design that builds sway control into the bars and brackets. That gives you resistance that rises with angle, nothing to unhook, and one less item to forget. The sway control hitch roundup covers that choice, and whether you can back up with each design covers the practical difference day to day.

1. 1If the back of the tow vehicle sags and the headlights point at the trees, you need weight distribution.
2. 2If the trailer wanders in crosswinds or when trucks pass, you need sway control.
3. 3If both are true - which is common with a travel trailer - buy one hitch that does both rather than two pieces of hardware.
4. 4If neither is true and the rig simply feels heavy, the issue is probably capacity, not hardware. Check payload before buying anything.

And if the trailer is already swaying as you read this, hardware is the second conversation. Why trailers sway covers the three causes, and tongue weight is the one that explains most cases.