Best 4L80E Upgrades for Unbeatable Performance

Performance Pack

Part No. HP-4L80E-01

Level up performance with the most complete upgrade kit for top-quality transmission builds.

• Recalibrated shift accumulation, with tunability for great, heavy-duty shifts
• Improved pump components minimize leaks, plus maintain pressure & lube under demanding use
• The only way to eliminate TCC PWM function without over-pressurizing the converter
• Includes internal parts for setup & to prevent common failures