Boss Triple Airbag 2603 Complete

The 2400, 2500 and 2600 series are all double-bellow Boss airbags in different diameters and load capacities. 2400 bags are smaller in diameter, 2500 are the most common mid-size bag used in many Load Assist kits, and 2600 bags are larger and suit heavier-duty applications where there is more space available around the axle and chassis.

Triple-bellow airbags such as the 2503 and 2603 are used where you need more travel or a taller free height, typically on vehicles with more than 2 inches of lift or long-travel suspension. They allow the suspension to sit higher at a given pressure while still providing the correct load support.

No, airbags are generally only interchangeable within the same series. For example, a 2500 double-bellow bag can often be swapped for a 2503 triple-bellow bag in a kit designed for that series, but you cannot simply fit a 2600 or 2400 into 2500 brackets. The bracket diameter, bolt pattern and clearances are all designed around a specific series.

Boss airbags typically have a recommended working range of around 5–160 psi, with a recommended test pressure of about three times the maximum working pressure and burst testing well above that. Always refer to the specific bag’s data and never exceed the recommended working pressure in normal use.

Replacement airbags must be installed on the correct brackets with the correct beadlock rings or hardware as designed for that kit. Ensure there is adequate clearance from tyres, exhausts, sharp edges and moving suspension parts, and maintain minimum pressure so the bag does not fold or pinch under full compression or articulation.

The Boss Triple Airbag 2603 is designed for vehicles with a lift range of up to approximately 10 inches of travel, making it ideal for 4WD applications and off-road situations. This extra bellow provides enhanced flexibility and articulation compared to standard airbags.

The Boss Triple Airbag 2603 has the same diameter as the 2600 model but features an additional bellow, allowing for greater travel (up to 10 inches) and improved performance in off-road conditions. This makes the 2603 more suitable for vehicles requiring higher articulation and load support.

Yes, the Boss Triple Airbag 2603 is designed to be a direct replacement for coil springs in 4WD vehicles. Its extended height and travel capabilities make it particularly effective for off-road applications where additional suspension support is required.

The fully compressed height of the Boss Triple Airbag 2603 is 75mm with 6mm ends fitted. This low profile allows for installation in various vehicle setups while maintaining necessary clearance.

The Boss Triple Airbag 2603 features a female 3/8 NPT port for the air inlet. Please note that no air fitting is supplied with the kit, so you will need to source a compatible fitting separately for your installation.