MZS Adjustable Trailer Hitch for 3x3 Receiver - 8" Rise/Drop, Dual Ball 2" & 2-5/16", 21,000 lb GTW

The MZS Adjustable Trailer Hitch is an 8-inch rise/drop, quick-adjust tow hitch built for 3"x3" receivers and rated up to 21,000 lbs GTW.

Designed for heavy-duty towing on trucks that use the less-common 3" receiver, this MZS hitch combines a precision-machined aluminum body, chrome-plated steel balls, and a patented quick-adjust mechanism (Patent No.: 18,759,945). It provides 1-inch incremental adjustments across an 8-inch drop and 8-inch rise, a built-in dual ball mount (2" and 2-5/16"), and a lockable adjustment key to secure the selected height. The unit is intended for demanding towing setups where strength, corrosion resistance, and easy height changes matter.

How does the quick-adjust patent work for changing hitch height?

The patented quick-adjust system lets you change the hitch setting rapidly without removing pins or tools. Rotate the provided key to unlock, slide the mount to the desired position, and rotate the key again to lock it into place.

• Patent-design mechanism (Patent No.: 18,759,945) for fast adjustments
• Height changes in 1-inch increments across 8" rise and 8" drop
• Locking key secures the working position for safe towing

What vehicles and receivers is this hitch compatible with?

This model is specifically made for 3" x 3" receiver tubes — a size usually found on extreme-duty trucks and certain late-model heavy-duty pickups. It is not compatible with standard 2" receivers, so measuring your receiver before purchase is essential.

• Designed only for 3" x 3" receivers (measure your receiver before buying)
• Common on heavy-duty trucks and select 2017+ F-350 models
• Supports a variety of trailer couplers when matched to the correct ball size

What are the strength and material features that affect durability?

The MZS hitch combines a heavy-duty, CNC-machined aluminum body with chrome-plated steel tow balls to balance weight, corrosion resistance, and strength. The assembly is engineered to resist cracking or flaking under repeated use and exposure to outdoor conditions.

• Maximum towing capacity: 21,000 lbs GTW when used per rated guidelines
• Precision CNC machining for dimensional accuracy and long-term fit
• Chrome-plated steel balls for wear resistance and quick, secure coupler fit

How do the built-in ball sizes and switching work?

The hitch includes two integrated ball mounts — a 2" ball and a 2-5/16" ball — so you can match the ball size to your trailer coupler without swapping separate balls. Switching between the two sizes is fast and tool-free, simplifying transitions between trailers.

• Dual integrated balls (2" and 2-5/16") for common coupler sizes
• Quick-change design eliminates separate ball swaps in the field
• Chrome finish on balls improves longevity and reduces sticking

Who this hitch is for: The MZS Adjustable Trailer Hitch is intended for owners of heavy-duty trucks and trailers who require a high-capacity hitch with easy height adjustment. It's a fit for fleet operators, contractors, agricultural users, and anyone towing heavy equipment who has a 3" receiver and needs a reliable, corrosion-resistant solution with rapid reconfiguration between rise and drop settings. Verify your receiver size and towing requirements before installing to ensure proper match and safe operation.