Drivetrain› Automatic Transmissions and Components

Trans Go Performance

TransBrake Conv. Kit GM 4L80/85E Valve Body

$1,028.57

SKU: T09L 4L80-D3-BRKIT

In Stock
In Stock
Ships by Jun 9
Free Shipping
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

This TransBrake kit offers street reliability and race performance. It retains factory electronic shift controls for daily driving but adds manual up-shift capability for track use. Features lightning-fast launch in both D3 (auto up-shifts) and D1 (manual up-shifts). Includes a safety switch to prevent accidental activation unless in first gear, and maintains constant line pressure (180 psi forward, 250 psi boosted reverse). This is a Transbrake Kit - Street - Manual / Automatic - Forward Pattern.

Fitment

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Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

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Specifications

BrandTrans Go Performance
Part NumberT09L 4L80-D3-BRKIT

Videos

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HD2 SHIFT KIT INSTALL FOR THE 4L80E SWAP ON MY SINGLE CAB SILVERADO!!
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HOW TO 4l80e TRANSGO HD2 SHIFT KIT INSTALL!!! Intermediate Ring Direct Drum Springs!!! - a21bravo
junkyard 4l80 tranny modified for full manual shifts. transgo 4l80e-3 kit and a few tips / upgrades

junkyard 4l80 tranny modified for full manual shifts. transgo 4l80e-3 kit and a few tips / upgrades
Jakes Performance D3 4l80e Trans Brake Kit.

Jakes Performance D3 4l80e Trans Brake Kit.
4L80e d1 vs d3 trans brake

4L80e d1 vs d3 trans brake
4l80e Rebuild With Extreme Automatics Trans Brake Install - How To.

4l80e Rebuild With Extreme Automatics Trans Brake Install - How To.

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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