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Corvette servo pistons provides firmer shifts for competition, heavy duty and pro-street use.Teflon sealing rings and o-rings included.
700R4 4L60 4L60E 4L65E, 3-4 Rapid Relief Valve replaces the ball capsule in the input drum with a spring-loaded ball valve to help eliminate clutch drag on the release, according to the company. It also greatly reduces centrifugal apply in high-performance applications.
Superior Transmission Parts K012 Super servo provides quicker servo release on 4-3 downshift,super positive 1-2, positive 3-2 kickdown, improved 2-3.
Holds 40% better than OEM piston. (Replacement seal 77767-SK) More Information
This Sonnax 77764-01 piston can be used by itself or with Sonnax input housing reinforcement sleeve kit 77733-01K. No machining or modification is required to use this piston and it can be used in all 4L60/4L60-E/4L65-E as long as it is used in conjunction with an aluminum over run piston. (USE WITH STOCK INNER & OUTER LIP SEALS).More Information
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