High Volume & High Pressure. Comes with a Regular Pressure Spring. High Volume, high pressure pump that produces 40 PSI at low idle and 62 PSI maximum. If lower pressure is desired, remove the orange high pressure spring and replace it with the enclosed plain colored standard pressure spring.
This spring produces 32 PSI at low idle and 42 PSI maximum. All stated pressure levels are based on all bearing clearances being within recommended specifications. Excessive internal clearances will result in lower pressure readings.