HPA Systems™ offers high pressure air systems that can be safely mounted to any ORV vehicle allowing for more room for gear, tools, and friends.

​Our unique designs allows our systems to hold 4500 psi of air pressure. This is the same air we breath everyday. It is non-toxic to humans and animals.

About Our Company

Repair and Services

Mounted AuxAir66™ in Ford F150 Raptor

KSI Engineering LLC, DBA HPA Systems™ was founded in 2016 by Devin Kaiser. After years of off roading his Ford F150 Raptor at Silver Lake Sand Dunes in Mears, MI, and tired of waiting in long lines to air up or driving on low psi to find air, Devin was wanting to bring a quality portable high pressure high system to the off road market.  Devin went to work on designing his own high pressure air system. What he ended up with was an on-board system that was portable, ran air tools, affordable, inflated tires quickly and safely, and used air, not CO2! And the AuxAir66™ was born.

We are  located in West Bloomfield, MI and growing the business in the off-road market

What We Offer

Authorized Servicer

KSI Engineering LLC DBA HPA Systems™ is the only authorized servicer of our AuxAir66™.


State of the Art

Our shop uses the most modern equipment available, our engineers regularly attend continuing education courses, and we take great pride in our trade.

System Tank Fills

The AuxAir66™ can be filled at a number of locations for a low fee. Many paintball, sporting good shops, fire stations, and SCUBA shops can fill our HPA system. Please click here to find a location near you.


If you need further assistance, please contact us.