GM Super Servos

Superior Transmission Parts Billet 2nd Gear Super Servo Kit 4L65E 4L70E 4L75E

Ford_K085.pngTranstar Part No. – A74905H
Transmission – GM 700R4, 700-R4, 4L60, 4L60E 
Position – 1-2 Band Apply Servo

This Problem Solver deals with these problems: Sluggish performance when positive shift is demanded; Lack of holding power in 2nd. Largest apply area available for 700-R4. 35 percent more apply area than the Corvette servo. Super positive 1-2 shift. Quicker servo release on the 4-3 downshift. Positive 3-2 kick down. Adjustable pin tip included to set perfect band clearance. Great for heavy service, towing, racing and off-road. Also can be installed on the 4L60-E. Kit contains two-piece 6061-T6 billet aluminum piston set with three piece steel washer set, servo clip, servo pin extender, custom return spring and four piece Teflon sealing, ring and O-ring set.

Features and Benefits:

  • 11% increase in apply surface area over OEM designs
  • Made from 6061-T6 billet aluminum in the USA.
  • Piston features lip seal design to prevent leaks
  • Eliminates 4-3 release drag with special return spring
  • Installation accomplished without removing transmission or valve body

Superior Transmission Parts 4L60/4L60-E Super Servo 4th Apply Piston & Cover

Ford_K085.pngTranstar Part No. – A74902H
Transmission – GM TH700-R4, 4L60/E, 4L65E, 4L70E
Position – 3-4 Servo

Better holding capacity in 4th gear, Lip seal design on piston (less leakage), Proper 4-3 (no drag) release, Constructed of billet aluminum.

Features and Benefits:

  • Made from 6061-T6 billet aluminum
  • Adds up to 80% increased apply area when compared to the smallest stock servo, and double of the Corvette “093” servo.
  • Increased apply area means the most apply holding power for any servo for this transmission.
  • Improves shift timing and feel and reduces heat from positive band apply.
  • Utilizes Teflon® rings to eliminate drag from the OEM rubber rings
  • Includes a Teckpak Pin Extender.  Must use with the OEM GM pin.
  • Good for turbo engine applications
  • Recommended to also purchase the 4th Gear Super Servo (K034 / A74902H) for full unit upgrade

Superior Transmission Parts 200-4R Super Servo

Ford_K085.pngTranstar Part No. – A54907BS
Transmission – GM 200-4R 
Position – 1-2, 2-3 Servo

Servo kit consists of: two piece 6061-T6 billet aluminum piston and servo cover, 2 lip seals for billet piston, servo cover O-ring and easy to follow instructions.

Features and Benefits:

  • 11% increase in apply surface area over GM Grand National OEM servo design
  • Made from 6061-T6 billet aluminum in the USA.
  • Improves positive 1-2 shift, 2-3 shift, 3-2 kickdown
  • Increased holding power in 2nd gear
  • Piston features lip seal design to prevent leaks
  • Requires dropping of the pan to align the band

Superior Transmission Parts 4L30-E Low Band Super Servo

Ford_K085.pngTranstar Part No. – A74905H
Transmission – GM 180C (Postal), 4L30E
Position – 1-2, 2-3 Servo

This servo deals with these problems: Resists wear in the pin bore, Increased forward engagement pressure, Reduced band failure and engagement problems.

Features and Benefits:

  • Helps to eliminate 2nd gear bind up, burned up low band and 2nd gear, and 3rd gear circuit leaks
  • Made from 6061-T6 billet aluminum in the USA.
  • Good for Postal Transmissions
  • Good for all GM and BMW 4L30E applications