Tow Balls

A tow ball is a critical connection point between your vehicle and trailer. Whether you are towing a box trailer, boat trailer, camper, or work equipment, selecting the correct towing ball ensures safe load transfer, correct articulation, and compliance with rated capacities. Repco's range of tow balls, towbar balls, and towing accessories provides options to suit light-duty and heavy-duty towing applications.

From a standard 50mm tow ball to a 75mm tow ball for larger trailers, Repco’s range includes various towball sizes, shank lengths, load ratings, and configurations such as high rise tow ball, raised tow ball, and long shank tow ball designs. Choosing the correct tow ball for sale requires attention to vehicle towbar rating, trailer coupling size, and tow ball weight limits.

What is the difference between a towball and a towbar?

A towbar is the engineered steel framework mounted directly to your vehicle’s chassis. It is rated for maximum towing capacity and tow ball download. The tow ball, sometimes referred to as a towbar ball, trailer tow ball, or hitch ball, is the removable spherical component bolted to the towbar tongue.

The towbar distributes load across the chassis mounting points, while the tow ball provides the pivot connection for the trailer coupling. Without the towbar, a tow ball cannot be mounted. Without the tow ball, the trailer cannot connect securely.

Repco's range includes tow bar balls with varying shank diameters and thread lengths to suit different towbar tongues. Always confirm compatibility between your towbar and the selected tow ball balls, including thread size, nut specification, and torque requirement.

Is it illegal to have a tow ball when not towing?

Regulations differ depending on local road rules, but in many areas it is not illegal to leave a car tow ball fitted when not towing. However, there are practical considerations. A protruding towing ball can present a shin hazard in car parks and may interfere with reversing sensors.

To reduce risk, many people remove the towball when it is not required. Alternatively, fitting a tow ball cover, tow ball cap, or tow bar protector from Repco’s range can protect both the thread and pedestrians from contact. Accessories such as a towbar shin protector or tow bar shin protector provide cushioning while maintaining readiness for towing.

Using a tow ball cover also helps prevent corrosion and thread contamination, particularly if your vehicle is regularly exposed to water, mud, or coastal environments.

Can you install a tow ball yourself?

Installing a tow ball yourself is possible if you follow correct procedures and specifications. Most tow balls are supplied with a high-tensile nut and washer. Installation requires tightening to a manufacturer-specified torque value, often exceeding 200 Nm depending on design.

To complete the installation safely, use a correctly sized towball socket or tow ball socket that matches the nut dimension. Repco’s range includes tow ball spanner, towball spanner, and tow ball wrench options designed for heavy-duty torque application. A high-capacity breaker bar or torque wrench is recommended to achieve correct clamping force.

Before installation:

• Confirm the tow ball rating meets or exceeds your trailer’s ATM and towbar capacity.
• Check shank diameter and length, especially when using a long shank tow ball.
• Ensure the mounting surface is clean and free from burrs.
• Use the supplied washer and locking nut.

After installation, recheck torque after the first towing trip. Repco’s range of tow ball weight scale and tow ball weight scales can assist in verifying correct trailer download, ensuring your towing ball setup operates within safe limits.

What is a tow ball?

A tow ball is a hardened steel spherical attachment, precision-machined to match a corresponding trailer coupling. It bolts vertically through the towbar tongue and is secured underneath with a high-strength nut.

Common configurations within Repco’s range include:

• 50mm tow ball and 50mm towball options for standard trailers.
• 75mm tow ball for heavy-duty plant and agricultural trailers.
• High rise tow ball and hi rise tow ball for vehicles requiring additional coupling height.
• 50mm high rise tow ball for lifted 4WD applications.
• Long shank tow ball for thicker mounting plates.

Each towing ball is stamped with a load rating and torque specification. Never exceed these limits. If you are unsure how much is a tow ball rated for, consult the packaging details within Repco’s range before purchase. Tow ball price varies depending on size, finish, and load capacity.

Avoid confusion with misspellings such as toe ball, toeball, or tow bull when searching. Ensure you select a compliant trailer ball that matches your coupling size precisely.

What size is a tow ball in Australia?

The most common trailer ball size for light-duty towing is 50mm. A 50mm tow ball hitch is widely used for caravans, box trailers, and small boat trailers. This size offers a strong balance between articulation and load capacity.

Heavier applications may require a 75mm tow ball. Always confirm that the trailer coupling is designed for the selected towball sizes. Mismatched tow ball sizes can result in poor coupling engagement and increased wear.

In addition to ball diameter, consider:

• Shank diameter and thread pitch.
• Shank length, particularly for raised tow ball or high tow ball setups.
• Maximum tow rating and download rating.

Repco’s range of towballs and tow bar balls includes clearly labelled specifications, helping you select the correct 50mm tow ball, 50mm high rise tow ball, or heavy-duty alternative for your towing requirements.

Load Management and Tow Ball Weight

Correct tow ball weight, also known as tow ball download, is essential for stable towing. Insufficient download can cause sway, while excessive weight can overload the rear axle. A tow ball weight scale from Repco’s range allows you to measure trailer download before departure.

Using tow ball weight scales helps you redistribute cargo within the trailer to achieve recommended download, typically around 8 to 12 percent of total trailer weight, depending on manufacturer guidance.

Maintenance and Protection

Regular inspection of your towbar ball is essential. Check for signs of flattening, corrosion, thread damage, or abnormal wear. Replace worn tow balls promptly to maintain secure coupling.

Applying light corrosion protection to the shank threads, fitting a tow ball cover when not in use, and using a tow bar protector can extend service life. Repco’s range includes tow ball attachments and protective accessories designed to safeguard both the towbar and the towing ball assembly.

Selecting the correct tow ball from Repco’s range of towballs, towbar balls, 50mm tow ball options, high rise tow ball configurations, and tow ball weight scales ensures your towing setup is matched to your load and vehicle. To support safe towing, consider complementary categories such as trailer lighting and wiring harnesses, towing mirrors and safety chains, and recovery gear and load restraint equipment available within Repco’s range.