4L60E, 4l65E, Commodore, Front pump, high-rev, Unbreakable ring kit, also increases regulator pressure spring, K77878

Here is an unbreakable high rev-ing ring kit for 4l60e/4l65e 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 above 5500 rpm.
• you may have noticed that shifts get soft with max throttle upshifts on high revs.
• PN: K77878