Towbar is a component that is secured to a vehicle’s chassis (the structural frame of a vehicle) and, using a coupling system (often a tow ball system) securely mates to the trailer or caravan. Class 4 towbar is the largest available product that is usually rated to the maximum towing capacity of the vehicle for which they are designed and can handle almost anything that is thrown at them.
Towbar fitters are used for the installation of such products. Professional installers usually work outside a dedicated workshop but several businesses now offer mobile installation. Though the items are not aesthetically pleasing while camping, boating or adventures in general, it is essential and would make all those undertakings simple and accessible.
The most commonly used type is the flange towbar in which the tow ball is bolted to the bar with two bolts. Some variations of the product comprise four bolts instead of two. This is the most versatile design as it can be used with tow ball mounted accessories, i.e., cycle carriers, bumper protectors and all types of stabilizers all mounted between the towbar and ball. The mentioned item is available in both fixed and detachable styles and is capable of using height-adjustable couplings, drop plates and spacers to get different towing heights and clearances.
Detachable flange towbars have all the benefits of a fixed flange with the additional option to remove when not in use. The detachable ones are often more expensive than the fixed and detachable swan necks variety. The detachable flange tow ball necks are heavier than swan necks. The former looks less sleek when fitted. The electric swivelling trailer system is the newest type of towbar developed. The towbar is released by pressing a button inside the car and automatically manoeuvres itself into place.