Boundary oil pump gears are 100% manufactured in our Dallas, Texas production facility. We start by quenching our chromoly billets from extreme heat and then temper it to tough indestructible core. After machining we apply our ColdFlow surface hardening process and complete it to a Mirror Finish. What does all this give you? It gives you a pump with stability over 9000 RPM, proven in excess of 2000whp, with higher efficiency, less friction, and backed by one of the industries best warranty’s.

Boundary Black Series Our release of the Boundary Black series is to set a new precedent in Gerotor technology. These new gerotors feature both our MartenWear super surfaces for low friction and high wear capability along with our industry-leading ported gerotor designs.

This new gear has the following features:

1. MartenWear and ColdFinish combination makes the surface capable of 13000 RPM surface speeds without wear.

2. Ported gerotor dramatically increases the surface area available for flow and allows the flow to move straight through the outer gerotor instead of having to go up across and down to pumping cavity. This has many benefits.

   1. Less cavitation, which reduces aeration and foaming of the oil

   2. More flow at high RPM

   3. Less pumping losses

   4. Less heat in the oil

3. Fits all OEM and billet crankshafts