Transmissions & Drivetrain

FAST EZ-TCU GM Transmission Controller 30299-KIT for 2009 & Up 4L70E, 4L65E For computer controlled transmissions, nothing beats the new TCI EZ-TCU by FAST™. No software, laptop or tuning experience is required. Simply install this...

MSD Atomic Transmission Controller 2760 MSD Stand Alone 4-Speed Automatic Electronic Transmission Controller. Take the mystery out of programming your transmission with this easy to use transmission controller. It allows adjustments such as...

TCI FLEXPLATE LS1 ENGINE TO 4L80E/TH400 CONVERTER/TRANSMISSION WIDE PATTERN SFI APPROVED Heavy-duty flexplate made from A36 steel avoids cracking & high RPM ring gear failure Flexplates are an often overlooked component in race and high...