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4L80 Shift Kit Sonnax High Performance

Condition: New
Model: HP-4L80E-01

$336.57

Sonnax Performance Pack HP-4L80E-01 upgrades GM 4L80-E and 4L85-E transmissions for maximum performance and durability in work/sport vehicles. Innovative components work together to precisely recalibrate pressures and shift accumulation, delivering firmer shifts under load without sacrificing low-speed drivability. To target common wear areas in the transmission, the kit includes many improved parts to repair damage, prevent future wear and improve reliability.

  • Recalibrated shift accumulation, with tunability for great, heavy-duty shifts Improved pump components minimize leaks, plus maintain pressure and lube under demanding use
  • The only way to eliminate TCC PWM function without over-pressurizing the converter
  • Includes internal parts for setup and to prevent common failures
  • Contents
  • Line Pressure Booster Kit
  • Lube Regulated Pressure Regulator Valve
  • TCC Pressure Limiter Valve, Spring & Plug
  • AFL Filter End Plug & O-Ring Kit
  • Direct Clutch Dual Feed Plug
  • Direct Clutch Dual Feed Aluminum Plugs (3) 2 Extra
  • 1-2, 2-3 & 3-4 Accumulator Piston Springs (3)
  • Checkballs (8)
Twist Drill .062" Twist Drill .086" Heavy Duty Case Bushing & Bearing Kit Direct Housing Support Ring & Seal Heavy Duty Intermediate Piston Spring Retainer Plate Case Saver Retainer Heavy Duty Clutch Retaining Ring Intermediate Clutch Accumulator Valve Springs & Adjustable End Plug 2 Springs Heavy Duty Direct Piston Return Springs (8) Forward Clutch Hub Front Washer .078" Reverse Servo Spacer Kit

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