Reese Weight Distribution Kit | 66021 | 8K GTW | 800 lbs TW | No Sway

Restore stability and proper weight distribution to your travel trailer setup with the Reese 66021 Weight Distribution Kit. This 8,000 lbs capacity weight distribution hitch evenly spreads your trailer's tongue weight across all axles of your tow vehicle and trailer — leveling the ride, restoring control, and letting you tow to the maximum rated capacity of your hitch. Sized for mid-capacity travel trailer applications up to 800 lbs tongue weight.

Why a Weight Distribution Hitch Matters

If you tow a travel trailer near the maximum capacity of your tow vehicle without a weight distribution system, you'll experience several real problems:

• The rear of your tow vehicle sags, lifting the front wheels and reducing steering control
• Your headlights point upward into the sky instead of illuminating the road ahead
• Uneven tire wear on both your tow vehicle and trailer
• Reduced control over steering the entire rig
• You can't safely tow to the max capacity rated by your hitch

The 66021 solves all of these by transferring tongue weight from the rear axle of the tow vehicle out to the front axle of the tow vehicle AND back to the trailer axles — restoring level ride height and proper weight distribution across the entire rig.

8,000 lbs Capacity — For Smaller-to-Mid Travel Trailers

The 66021 is sized for mid-capacity travel trailer applications:

• 8,000 lbs gross towing capacity
• 800 lbs maximum tongue weight

That capacity range covers most standard 20-28' travel trailers with typical tongue weight ratios. For larger fifth wheels or heavier travel trailers up to 12,000 lbs GTW with up to 1,200 lbs tongue weight, see the Reese 66074 Strait-Line Weight Distribution Hitch instead — same Reese quality, larger capacity, AND adds dual-cam sway control.

⚠️ NO Sway Control Included

An important distinction for the 66021: this kit is a weight distribution kit WITHOUT sway control. The 66021 evenly distributes weight but doesn't actively prevent trailer sway during crosswinds, passing trucks, or sudden maneuvers.

If you primarily tow in calm conditions, on protected roads, or with stable smaller trailers, the lack of sway control may not be an issue. If you tow regularly in windy areas, on highways with heavy truck traffic, or with larger profile trailers prone to sway, you may benefit from the Reese 66074 Strait-Line which includes dual-cam active sway control.

Universal Fit Design

The 66021 is a universal-fit weight distribution kit — works with a wide range of tow vehicles and trailers within the capacity range. Adjustable arms let you dial in the right setup for your specific rig.

Heavy-Duty Steel Construction

Built to handle the demanding loads of long-distance towing:

• Steel construction throughout for long-term durability
• Black finish for corrosion resistance
• Grade 5 nuts and Grade 8 bolts — heavy-duty hardware appropriate for the load
• Mounting hardware included in the kit

Selecting the Right Capacity — Think "Goldilocks"

One of the most common mistakes RVers make when buying a weight distribution hitch is going too big. The right system isn't the highest-capacity one — it's the right-sized one for YOUR tongue weight:

• Overbuilt: Creates a rigid, harsh ride with a bouncing trailer
• Underbuilt: Can't distribute weight properly — virtually useless
• Just right: Distributes weight evenly without over-stiffening the connection

Calculate your needs: Trailer tongue weight + Cargo behind tow vehicle's rear axle = Combined tongue weight. The 66021's 800 lbs tongue weight ceiling covers most mid-capacity travel trailers — but make sure your combined tongue weight falls within that range before ordering. If your tongue weight is closer to 1,000-1,200 lbs, step up to the 66074.

What's Included

• (1) Weight distribution system head
• (2) Adjustable arms (spring bars)
• Mounting brackets
• Mounting hardware (Grade 5 nuts, Grade 8 bolts)
• All necessary installation hardware

⚠️ Required — Sold Separately

To complete your installation, you'll need the following components (NOT included with the 66021):

• Shank — connects the head to your tow vehicle's receiver
• Hitch ball — sized for your trailer coupler
• Safety chains — required for safe towing

These items are sold separately so you can match them to your specific tow vehicle's receiver height and trailer coupler size.

Pro Tip — Balance Your Trailer Cargo First

Before investing in a weight distribution hitch, make sure your cargo is evenly loaded in your trailer to keep the weight balanced. Many "I need a WDH" problems actually solve themselves when cargo gets distributed properly. If you still have a hard time even after balancing your tongue weight, a weight distribution hitch should help.

⚠️ Professional Installation Recommended

Weight distribution hitch installation involves precise measurement, head adjustment, spring bar tensioning, and integration with your tow vehicle's existing hitch. Professional installation by a qualified towing/trailer technician ensures the system is set up correctly for your specific tow vehicle and trailer — improper WDH setup can be just as dangerous as having no WDH at all.

⚠️ California Proposition 65 Warning

WARNING: Cancer and Reproductive Harm — www.p65warnings.ca.gov

Chemical of concern: Chromium

Key Features

• Reese weight distribution kit — universal fit
• 8,000 lbs gross towing capacity
• 800 lbs maximum tongue weight
• Adjustable arms for setup flexibility
• Heavy-duty steel construction in black finish
• Grade 5 nuts and Grade 8 bolts — premium hardware
• Mounting hardware included
• Without sway control — for setups not requiring active sway management
• Universal-fit design — wide tow vehicle and trailer compatibility
• Length: 31"
• Weight: 59.1 lbs
• Shank, hitch ball, and safety chains sold separately

Specifications

• Brand: Reese
• Part Number: 66021
• UPC: 016118660210
• Type: Weight Distribution Kit (without sway control)
• Gross Towing Capacity: 8,000 lbs
• Gross Tongue Weight: 800 lbs
• Includes Sway Control: No
• Universal or Specific Fit: Universal
• Length: 31"
• Mounting Bracket Position: 28"
• Adjustable Arms: Yes
• Material: Steel
• Color: Black
• Bolt Grade: Grade 5 nut & Grade 8 bolt
• Mounting Hardware Included: Yes
• Safety Chains Included: No (sold separately)
• Shank Included: No (sold separately)
• Hitch Ball Included: No (sold separately)
• Weight: 59.1 lbs
• Shipping Dimensions: 33" × 9.5" × 7"
• Prop 65: Yes — Chromium (Cancer and Reproductive Harm)