A weight distribution (WD) hitch uses spring bars to evenly distribute tongue weight across a tow vehicle's axles, improving vehicle handling and reducing rear sag. This system is particularly important for trailers with a tongue weight of around 500 lbs or more to maintain control during towing.
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A weight distribution hitch transfers trailer tongue weight forward to the tow vehicle's front and rear axles, instead of letting it all sit on the rear. This helps level the rig, improves steering and braking, and reduces sway.
The trailer's tongue pushes down on the hitch. Too much weight on the rear axle unloads the front tires, reduces steering control, and can make the truck nose up. A WD hitch transfers some of that load forward via the spring bars.
The hitch head clamps onto the trailer's coupler. Spring bars extend rearward and attach to chains or trunnion brackets. When the coupler is lowered onto the ball, the bars are tensioned. As the trailer pushes down, the bars flex and transfer load through the hitch shank to the truck frame—forward to the front axle and rearward to the rear axle. Match bar capacity to trailer weight and adjust chain/trunnion position.
Use a WD hitch when the truck squats noticeably, the steering feels light, or the manufacturer recommends it. Many hitches integrate sway control. See RV sway control systems. Match bar rating to loaded trailer weight.
Level the trailer, measure hitch height, install the hitch head and ball at the correct height. Attach the spring bars with proper tension—manufacturer specifies chain links or trunnion holes. Recheck after a short drive.
Yes. WD hitches are designed for bumper-pull (conventional) trailers, not fifth wheels.
If the truck doesn't squat and steering feels normal, a standard ball mount may be enough.
Many WD hitches include friction sway control. See our sway control guide.
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Last updated: March 2026 · Reviewed for technical accuracy