top of page


With increasing tractor speeds and trailer weights, air brakes are considered the only option for safe and efficient trailer braking.  They offer much improved performance and help to meet the latest laws and regulations for safe towing on the road.  Outdated hydraulic trailer brake systems can’t provide the braking efficiency demanded by modern road legislation. 

Image by Red Zeppelin

Why TractAir Air Brakes for tractors?

Over the last 30 years, TractAir has specialised in the development of air brakes for tractors. 


We supply directly to manufacturers and work with their engineering departments to design parts and systems to work in harmony with the tractor brake system.  As well as these ‘factory fitted’ systems, we use our knowledge to produce retrofit aftermarket systems for installation by importers and dealers on machines that didn’t leave the production line with air brakes.

Our air brake systems for tractors consist of an engine driven air compressor, reservoirs, control valves and couplings.  The system integrates into the original brake system of the tractor to ensure tractor and trailer brake in unison.  A connection to the park brake wiring operates the trailer brakes with the tractor brake and gives a fail-safe backup.  We connect a pressure gauge or control a pressure gauge built into the dashboard to give feedback to the driver.  All of this is included in one box, complete with comprehensive fitting instructions.  

Our systems integrate seamlessly with the tractor, using original parts where possible and taking into account all options and specification changes.  TractAir have long been at the forefront of air brake system design and evolving legislation, working with UK and EU officials to keep ahead of regulations and to develop the safety standards of tomorrow.  

Why not get in contact with us or complete the form below to find out what we can do for your tractor.

Why Air Brakes for Trailers?

What makes air brakes for trailers essential?


Modern trailers are being built to carry more weight, and at ever higher speeds.  Widespread use of commercial axles means that larger brakes are now often fitted, however many trailers are still supplied with antiquated hydraulic brake actuation.  Without the power to brake the trailer effectively this leads to long stopping distances and a trailer that doesn’t comply with road regulations.  On top of this, the extra load placed on the tractor brakes can be huge, leading to overheating and premature wear.  A system without load sensing will never have the correct brake force which risks locking and jack-knife when empty or insufficient braking when full. 

The Solution:

Upgrading these trailers to air braking is straightforward, cost effective and a great way to improve safety and driveability, giving the power and control needed to drive at speed on the road.  A load sensing valve automatically increases braking when the trailer is loaded, preventing lockup when empty and giving more power to the brakes when full.  Air brakes have fail-safe features which will apply the brake automatically if there is a failure in the tractor or trailer system.  

TractAir air brake systems for trailers include everything you need to upgrade your trailer.  Coupling and suzzie coils connect the tractor, while a reservoir stores air for control valves mounted on the chassis.  With correctly sized chambers supplied to actuate the trailer brakes and usually a bolt on fit to brackets on the axles.  

We have various options available to tailor the system to suit your needs.  Our air and hydraulic brake chambers are perfect for anyone with a mixed fleet of air and hydraulic braked tow vehicles, giving you the option of both brake types.  We can add a shunt valve to help when moving the trailer around the yard, and automatic drain valves to save on maintenance time. 

Do complete the form below or get in touch with us directly to find out what we can do for you and your tractors and trailers.

To get a quote from us, just complete the form below and we'll get back to you.

Complete the form below and we'll get back to as soon as possible

Thanks for getting in touch

bottom of page