Polarstar Jack HPA Engine

The Polarstar JACK replaces the original gearbox components with a programmable pneumatic system allowing for higher performance and greater reliability over a gear driven system.  This unit comes with everything you need, from the wire harness, to the triggerboard, to the FCU.  The JACK is a very affordable option, while still retaining the same performance and quality you have come to expect from other PolarStar products. The JACK™ has only one moving part, the nozzle, which acts as its own poppet valve.

• Designed, manufactured and built in the U.S.A.
• Assembled from CNC machined aluminum components with high performance Delrin nozzle
• Universal cylinder design is compatible with numerous gearbox versions