A reliable source of onboard compressed air out on the trail is not only great for airing up tires and actuating lockers, but a good system can also make short work of trail repairs because it can power air tools. We installed a Viar X'Treme Duty Onboard Air System on one of our trail rigs and have to say we were impressed with its ease of installation and performance.
The X'Treme kit is a 12V system that has a duty cycle of 100 percent at 100 psi, and a maximum working pressure of 15 psi. The system isn't too much of a drain on a rig's electrical system with an amperage draw of 29 amps. If the vehicle has a good battery and a high-amperage alternator, that will help, but running the system with a stock alternator and battery is adequate.