700R4 / 4L60E 2nd Gear Corvette Servo
- Piston D-Rings (2)
- Housing O-Ring
2nd gear “Corvette” ratio servo kit provides increased apply area resulting in improved holding power for firmer 1-2 and 3-4 shifts. This kit is compatible with Sonnax 4th gear Super Hold dual servo assembly 77767K.
- Upgrade used for high performance or heavy-duty towing applications
- Improved D-ring sealing configuration