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Last Updated: September 2026
Weight distribution hitch part numbers are easy to cross up, and in this category the mix-up is expensive: the wrong tongue weight rating is not something you can adjust your way out of once the trailer is hooked up. So before anything else, confirm the exact part number on the listing in front of you.
This review covers the Husky Liners Husky 31986 Round Bar Weight Distribution Hitch Package - 600 lb. Tongue Weight Capacity (ASIN B009P38MY4). Everything below is drawn from what Amazon publishes for that listing, checked on 10 September 2026.
One mismatch to flag up front: the web address of this page refers to part number 31997, but the only verified product record available here is for Husky 31986 (ASIN B009P38MY4). No verified record for Husky 31997 was available, so none of the ratings, dimensions or ball size below should be read as applying to that part number — every figure on this page belongs to 31986.
Here's the thing: the published dimensions, ball size and sway control hardware for this package tell you a great deal about how it is set up, but they do not settle which trailers it is and is not sized for — the supplied listing does not state a gross trailer weight rating or a spring bar rating.
Review at a Glance
| Field | Detail |
|---|---|
| Price | |
| Product | Husky Liners Husky 31986 Round Bar Weight Distribution Hitch Package - 600 lb. Tongue Weight Capacity |
| Best For | Owners whose measured tongue weight falls within the 600 lb. capacity named in the listing title, and whose coupler takes a 2-5/16 inch ball |
| Pros | Sway control ball already attached; package arrives pre-assembled to the weight distribution hitch; dual friction sway control brake pad system; 8 inches of total height adjustment published |
| Limitations | Listing publishes a single ball size (2-5/16 inch), so 2 inch and 1-7/8 inch couplers are not addressed; the supplied listing information does not state gross trailer weight rating, spring bar rating, materials or warranty |
No published star rating or review count was supplied for this listing, so this review does not assign one.
- 8 inches total height adjustment; rise: 5-5/8 inches; drop: 2-3/8 inches; shank length: 10 inches; ball to pin hole: 12-3/4 inches
- Dual friction sway control brake pad system
Quick Picks
| Product | Published tongue weight capacity | Ball size | Sway control | Link |
|---|---|---|---|---|
| Husky Liners Husky 31986 Round Bar Weight Distribution Hitch Package - 600 lb. Tongue Weight Capacity | 600 lb. (per listing title) | 2-5/16 in | Dual friction sway control brake pad system | Check Price on Amazon |
Overview: What the Listing and Specifications Show
A weight distribution hitch uses spring bars to transfer some of the trailer's tongue load forward onto the tow vehicle's front axle and rearward onto the trailer axles, instead of letting all of it press down behind the rear axle. Sway control is a separate job layered on top of it: resisting the side-to-side yaw a crosswind or a passing semi induces.
The product title on Amazon names it a Round Bar Weight Distribution Hitch Package with a 600 lb. tongue weight capacity. That number is the entire buying decision. Tongue weight is the downward load your loaded trailer's coupler places on the ball, and it changes with how you pack the trailer, not just with what the trailer weighed empty. If your measured tongue weight sits above the capacity published in this listing, this is the wrong package and no amount of adjustment fixes that.
On the hardware side, the listing specifies a 2-5/16 inch trailer ball, a dual friction sway control brake pad system, a sway control ball attached, and a package pre-assembled to the weight distribution hitch. That last pair of bullets matters more than it sounds — sway control kits sold as loose parts leave you sourcing and torquing a separate sway ball onto the ball mount before you can hook up at all.
Worth noting for the searchers who typed "2.32 inch ball": 2-5/16 inches converts to 2.3125 inches, which is where that decimal figure almost certainly comes from. It is the same standard ball size, expressed as a decimal.
Key Features and Specifications
All figures below are the ones Amazon publishes for ASIN B009P38MY4, checked on 10 September 2026.
| Specification | Published value |
|---|---|
| Tongue weight capacity | 600 lb. (stated in product title) |
| Total height adjustment | 8 inches |
| Rise | 5-5/8 inches |
| Drop | 2-3/8 inches |
| Shank length | 10 inches |
| Ball to pin hole | 12-3/4 inches |
| Trailer ball | 2-5/16 inches |
| Sway control | Dual friction sway control brake pad system |
| Sway control ball | Attached |
| Assembly state | Pre-assembled to weight distribution hitch |
| Gross trailer weight rating | Not stated in the supplied listing information |
| Spring bar rating, materials, finish, warranty | Not stated in the supplied listing information |
Amazon's listing for this package publishes 8 inches of total height adjustment, made up of a 5-5/8 inch rise and a 2-3/8 inch drop. The listing also publishes a shank length of 10 inches and a ball-to-pin-hole dimension of 12-3/4 inches.
Run the arithmetic and the numbers are internally consistent: add the published 5-5/8 inch rise to the published 2-3/8 inch drop and you land on exactly the 8 inches of total height adjustment the listing claims. That is a small thing, but spec sheets that contradict themselves are a real problem in this category, and this one does not.
Husky Liners Husky 31986 Round Bar Weight Distribution Hitch Package - 600 lb. Tongue Weight Capacity — Best for a 2-5/16 inch coupler and a verified sub-600 lb. tongue load
That use case comes straight from two published facts and nothing else: the 600 lb. tongue weight capacity named in the listing title and the 2-5/16 inch trailer ball specified in the feature bullets. If either of those does not match your rig, stop here.
The rise-heavy adjustment range is the second thing to read closely. With 5-5/8 inches of rise available against 2-3/8 inches of drop, the geometry leans toward raising the coupler relative to the receiver — the situation you get with a tall-coupler trailer behind a truck or SUV that sits lower at the receiver. If your combination needs a deep drop instead, the 2-3/8 inch drop figure is the ceiling on what this shank offers, and that is worth measuring at your own hitch height before ordering.
Strengths, all traceable to published specifications
- Sway control ball attached and the package pre-assembled to the weight distribution hitch, per the listing bullets — fewer loose parts to source before the first hookup.
- A dual friction sway control brake pad system is included in the package rather than sold separately.
- 8 inches of total height adjustment across a 5-5/8 inch rise and 2-3/8 inch drop gives real setup latitude for coupler-height matching.
- A 2-5/16 inch ball is already specified, so there is no separate ball purchase for trailers using that coupler size.
- The listing specifies one ball size only. Trailers with 2 inch or 1-7/8 inch couplers are not addressed by the published specification.
- The 600 lb. tongue weight capacity in the title caps the useful range of this package; heavier trailers need a different rating.
- The supplied listing information does not state the gross trailer weight rating, spring bar rating, bar material, finish or warranty length, all of which you would normally want before committing.
Expected Performance, Based on Manufacturer and Listing Data
Be clear about what the published data can and cannot tell you. It establishes what is in the box and what the parts measure. It does not establish how the combination behaves on a windy interstate, and this site does not run road or laboratory testing, so no performance figure here is an observed one.
What is reasonable to infer: a dual friction sway control brake pad system, as the listing describes it, works by adding friction resistance at the connection between the ball mount and a bar running to the trailer frame. Friction sway control damps yaw once it starts rather than eliminating the forces that cause it, so setup, load placement and staying within the published tongue weight capacity all remain part of the outcome. Treat any expectation of stability as conditional on correct installation per Husky's own instructions and on confirmed fit to your specific vehicle and trailer.
The 12-3/4 inch ball-to-pin-hole dimension is the one to check against your tow vehicle's bumper and tailgate clearance before you buy. Longer ball-to-pin distances move the ball rearward, which changes turning clearance and, on some vehicles, whether the tailgate opens with the trailer coupled. The published number lets you measure for that in advance instead of discovering it in a campground.
Build Quality and Design
Honestly, this is where the record runs thin, and pretending otherwise would be inventing things. The supplied listing information does not state the spring bar material, the head casting material, the finish or any corrosion treatment, so this review makes no claim about durability or rust resistance.
What the design bullets do establish is the configuration: a round bar package, a sway control ball already attached, and the assembly shipped pre-assembled to the weight distribution hitch. Round bar systems are the long-standing layout in this category and the tuck-under geometry is a known quantity for most installers.
If finish quality, bar deflection rating or warranty coverage is a deciding factor for you, get those directly from Husky's published instructions and specifications for this exact part number before ordering. For general recall and consumer-safety checks on towing hardware, the Consumer Product Safety Commission maintains a public recall database (S1), and USA.gov collects broader consumer-protection resources (S2).
Value for Money
Check current price on Amazon, then judge it against what the bullets actually bundle. The package includes the sway control ball attached and the dual friction sway control brake pad system, plus a 2-5/16 inch trailer ball, and it arrives pre-assembled to the weight distribution hitch. Buying sway control hardware and a ball separately after the fact is the usual hidden cost in this category, and those bullets suggest that cost is already inside the package here.
The honest counterweight: without a published gross trailer weight rating, spring bar rating or warranty term in the supplied listing information, you cannot fully price-compare this against another package on paper. That gap is a reason to pull the manufacturer's spec sheet for the part number before deciding, not a reason to assume the worst.
Who Should Buy This
Buy it if all three of these are true. First, you have weighed your loaded trailer's tongue and it comes in under the 600 lb. tongue weight capacity named in the listing title. Second, your coupler takes a 2-5/16 inch ball. Third, your measured coupler-to-receiver height difference falls inside the 8 inches of adjustment available across the published 5-5/8 inch rise and 2-3/8 inch drop.
Skip it if your tongue weight is near or above 600 lb., if you run a 2 inch coupler, or if you need more than 2-3/8 inches of drop. Those are specification mismatches, not preferences.
If you are still working out which numbers to measure first, our guides on weight distribution hitch setup basics and how trailer sway control works cover the sequence.
How We Research
This site does not perform hands-on testing, and no one here has towed with, installed, weighed or handled this hitch. The research behind this page consisted of reading the Amazon Creators API verified product record for ASIN B009P38MY4 and the product listing feature bullets published on that listing, retrieved 10 September 2026, then cross-checking the published figures against each other for internal consistency — for example, confirming that the stated rise and drop sum to the stated total height adjustment.
Where a specification is absent from that record, this review says so rather than filling it from memory. An absent field means the supplied listing did not state it; it does not prove the manufacturer never publishes it elsewhere.
Final Verdict
My read: the Husky Liners Husky 31986 Round Bar Weight Distribution Hitch Package - 600 lb. Tongue Weight Capacity is a sensible, well-documented package for a narrow and clearly defined buyer — the owner with a 2-5/16 inch coupler and a verified tongue load comfortably under the 600 lb. figure in the title. The included, already-attached sway control ball and the pre-assembled state are the practical selling points, and the 8 inches of published height adjustment gives you room to dial in level towing.
The part number is where people go wrong. Every specification and conclusion above applies to Husky 31986 (ASIN B009P38MY4) only; no verified record for Husky 31997 was available for this page, so nothing here should be carried over to that part number. Weigh your loaded tongue first, then confirm the part number, the ball size and the tongue weight rating on the exact listing you are about to buy from before you click.
Frequently Asked Questions
The product title on Amazon names it a Round Bar Weight Distribution Hitch Package with a 600 lb. tongue weight capacity. Tongue weight changes with how you load the trailer, so weigh the loaded coupler rather than relying on a dry-weight brochure figure.
What size trailer ball comes with it?
The listing specifies a 2-5/16 inch trailer ball, and 2-5/16 inches converts to 2.3125 inches, which is where the "2.32 inch" figure some shoppers search for comes from — it is the same standard size written as a decimal.
Does it include sway control, or is that a separate purchase?
The listing bullets state a dual friction sway control brake pad system and a sway control ball attached, and describe the package as pre-assembled to the weight distribution hitch. That means the sway control hardware is part of the package as listed rather than an add-on.
How much height adjustment does it offer?
Amazon's listing publishes 8 inches of total height adjustment, made up of a 5-5/8 inch rise and a 2-3/8 inch drop. Measure your receiver height and your loaded coupler height first, because the range leans toward rise rather than drop.
Will it clear my tailgate?
The listing publishes a ball-to-pin-hole dimension of 12-3/4 inches and a shank length of 10 inches, which are the figures to measure against your bumper and tailgate before buying. Clearance depends on your specific vehicle, so confirm fit rather than assuming it.
Does the listing state a gross trailer weight rating?
No. The supplied listing information for this package states the tongue weight capacity in the product title and the dimensional and sway control specifications in the feature bullets, but it does not state a gross trailer weight rating, spring bar rating, materials or warranty term. Get those from Husky's own documentation for the part number.
How does it compare with an XtremepowerUS weight distribution hitch?
No verified product record for an XtremepowerUS hitch was available for this page, so this review does not compare specifications between the two. Comparing published tongue weight capacity, ball size and ball-to-pin-hole dimension side by side on each manufacturer's own spec sheet is the right way to settle it.
Sources and Methodology
Nobody at this website towed, installed, torqued or bench-checked this hitch — there is no lab here and no test trailer, and that is stated plainly on every page. What this review is built from is the Amazon Creators API verified product record for ASIN B009P38MY4 and the product listing feature bullets published alongside it, both retrieved 10 September 2026, read line by line and checked for internal arithmetic consistency.
For towing hardware, that kind of specification reading answers the questions that actually decide a purchase: tongue weight rating, ball size, shank length, ball-to-pin-hole distance and whether sway control ships in the box. It cannot answer how a given rig behaves in a crosswind, which depends on your vehicle, your loading and your installation — so treat the fit conclusions here as conditional on your own measurements and on Husky's own instructions for this part number.