Unlock Race-ready 4L80E Power with the TransGo Transbrake Kit!

Part number: 4L80-D3-BRKIT

TransBrake Kit
Fits: 4L80E and 4L85E

The TransGo TransBrake Kit delivers the ideal combination of street reliability and race-ready performance. It retains factory electronic shift controls for everyday driving while adding manual up-shift capability for track use.

With lightning fast release for hard launches in both D3 (auto up-shifts) and D1 (manual up-shifts), this kit offers total control.

A built-in safety switch prevents accidental activation unless the transmission is in first gear and constant line pressure ensures maximum holding power throughout the entire range.

To ensure maximum holding power the kit is designed to have fixed 180 psi of line pressure forward with boosted reverse pressure of 250 psi.
Features:
Factory shift control for daily driving
Manual up-shifting option for drag racing
Lightning fast release launch in D3 (auto) or D1 (manual)
Safety switch prevents accidental activation
Constant pressure; 180 psi forward, 250 psi reverse
Reverse gear requires activation for added control
Full manual shift option
Not reverse-patterned
Includes:
TransGo engineered TransBrake assembly
Safety pressure switch
Drop-in pressure regulator boost valve assembly
Constant pressure valve lineup
Dual feed triple valve body plate and gaskets
Electrical connectors
Quick release direct clutch return springs*
Heavy duty intermediate snap ring*

* Installation requires transmission removal