4L60E Front pump Unbreakable ring kit plus increased pressure regulator spring K77878

Here is an unbreakable high rev-ing ring kit for 4l60e Transmissions by Superior solutions

* Features unbreakable Sealed Power Nodular vane rings that will not break or bend during pump operation* Double priming springs keep pump pressure stable* Special pressure regulator spring increases line pressure

• no more blown pumps!
• it also comes with a priming spring that corrects pressure drop that occurs above 5500 rpm.
• you may have noticed that max throttle upshifts on high revving models gets soft.
• PN: K77878