From stock-type replacement parts to substantial performance upgrades, TransGo offers kits and components to make automatic transmissions shift better, handle more power, and improve reliability. TransGo produces shift kits, reprogramming kits, and specialty components designed to boost performance without sacrificing durability, with options to fit a wide range of manufacturers, including Chrysler, Ford, and GM.

• TransGo Reprogramming Kit GM 4L80E/4L85E 1991-13
• Automatic Transmission Shift Kit – Reprogramming Kit
• Valves / Springs / Spacers / Separator Plates / Gaskets / Shims / Bushings / Hardware
• GM 4L80E / 4L85E 1991-2013
• Brand: TransGo
• Part Number: 4L80E-HD2