Trailer Balls & Covers
Convert-A-Ball 004 3-Ball Plastic Storage Box Holder for Interchangeable Hitch Balls
What Are Trailer Balls and Why Do They Matter?
The trailer ball — sometimes called a hitch ball or tow ball — is the single point of contact between your tow vehicle and whatever you're hauling. Whether you're launching a boat at the ramp, towing an RV to your favorite campground, or pulling a utility trailer across rugged terrain, the trailer ball bears the full brunt of your load. Choosing the right one isn't just about convenience; it's a critical safety decision.
Trailer balls come in several standard diameters — most commonly 1-7/8", 2", and 2-5/16" — and each size corresponds to a specific coupler design and maximum tow rating. Using a mismatched ball diameter is one of the leading causes of trailer separation on the road. Beyond diameter, you'll also need to pay attention to shank length and shank diameter, which must be compatible with your ball mount, as well as the gross towing weight (GTW) rating, which must meet or exceed your trailer's loaded weight.
Ball Covers: Protection Between Tows
Trailer ball covers are often overlooked but serve an important purpose. When your hitch ball isn't in use, it's exposed to the elements — rain, road salt, UV rays, and grime all accelerate corrosion and wear. A quality ball cover protects the chrome or steel finish, keeping your ball smooth and properly shaped for a secure coupling every time. They also protect you and your gear from grease stains when loading and unloading cargo near the hitch.
Key Buying Considerations
- Ball diameter: Must match your trailer coupler exactly — 1-7/8", 2", or 2-5/16" are the most common sizes.
- Tow rating: Never exceed the rated capacity of your ball, ball mount, or hitch receiver — your system is only as strong as its weakest link.
- Material and finish: Chrome-plated steel offers a classic look and solid corrosion resistance; stainless steel goes further for saltwater and marine environments.
- Shank dimensions: Confirm the shank diameter and length are compatible with your specific ball mount.
- Single vs. dual ball: Dual-ball designs let you switch between two sizes without swapping hardware — ideal for those who tow different trailers regularly.
Top Brands in Trailer Balls & Covers
Trimax is a leading name in trailer towing hardware, known for pairing high-quality tow balls with their popular RAZOR adjustable hitch systems. Trimax trailer balls are available in chrome-plated and stainless steel, with single and dual-ball configurations rated up to 10,000 lbs, and are backed by a limited lifetime warranty for long-term peace of mind.
Brophy (C.R. Brophy Machine Works) has been manufacturing recreational vehicle accessories since 1947, building a reputation for precision-machined hitch hardware. Brophy trailer balls comply with SAE J684 safety specifications and are offered in stainless and chrome finishes with a variety of shank sizes to suit a wide range of towing applications.