RatioTek 400-800HP Valve Body Upgrade Kit (2011-2019)

Part# RT-A11-PR

$65.00 Includes Free Shipping.

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RatioTek Valve Body Upgrade Kit

Fits 2011-2019 Duramax with Allison 1000 Transmission

Part# RT-A11-PR

This kit is the perfect upgrade for any Duramax owner looking to increase to the 400-800 HP range.


  • Improved Pressure Regulator Valve Function
  • Improved Torque Converter Clutch Function
  • Increased Torque and Horsepower Capability

This kit also includes a Higher Calibration E Shift Spring (Part# RT-A-ES). Sticking E shift valves can cause codes P1711 or P0872.