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DHD RT-A11-PRX Allison Line Pressure Upgrade Kit 800-1200HP 2011+

RT-A11-PRX - 15B
Allison Transmission Line Pressure Upgrade Kit, LML
Pricing: $75.95


Allison Transmission line pressure upgrade spring. Kit sets minimum pressure and boosted pressure to levels that are a match from 800HP up to 1200HP or more adjustable within the kit.

This kit is recommended for extreme use. Drag racing, dyno and truck pulling.

This is a great upgrade when building your Allison transmission. We have used these for years and highly recommend them! There is no other alternative for the trucks out there with serious power.


  • 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.



Shipping Information

  • Item Requires Shipping
  • 2.0 lbs.
  • W6.0000” x H3.0000” x L6.0000”

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