Modify Bore-Up Aluminum Bearing Piston Head

Flat type , CNC process
Aircraft aluminum with thrust bearing and enhanced o-ring for superior air seal.
For use with Modify Bore-Up Cylinder Sets, may fit other brand bore-up cylinder sets also
Bore-up piston heads are to be used in conjunction with other bore-up parts (cylinder/cylinder head/nozzle) to increase air flow.
DO NOT MIX Bore-up components with non-bore-up components