VT Brake Booster & Master Cylinder Conversion Kit – Suits Holden Commodore VB–VS | Lowe Fabrication

Serious stopping power for your early Commodore.

This Lowe Fabrication-developed kit converts your VB–VS Commodore to the later model VT–VZ style brake booster and master cylinder setup, improving braking feel, performance, and reliability.

Unlike old-school conversions that involve welding or modifying studs, this kit is bolt-in and engineer-friendly. We retain the integrity of the original genuine brake booster by modifying only the actuator rod — no hack jobs here. A professionally rebuilt and powedercoated brake booster is mated to a Lowe Fabrications billet adaptor bracket to correctly position your new upgraded booster and master in your early commodore engine bay.

At the heart of this kit is our patent-pending CNC-machined billet firewall bracket, designed in-house at Lowe Fab to ensure perfect fitment and long-term reliability. Everything you need to perform the conversion is included — with optional brake line adapters available for early VB–VP vehicles.

Whats included?

✅ Fully reconditioned genuine brake booster – satin black powdercoat for factory look

✅ Brand new aftermarket brake master cylinder

✅ Lowe Fab CNC billet firewall mounting bracket (patent pending)

✅ Lowe Fab billet master cylinder to inner guard support bracket

✅ All required fasteners and hardware

Fitment Notes

Suits VB, VC, VH, VK, VL, VN, VP, VR, and VS Commodore models

If fitting to VR Series 2 or VS, do not use line adaptors

For new brake lines, we recommend flaring to suit the VT master cylinder instead of using adaptors

Please allow up to 8 weeks for dispatch due to custom assembly process

Why Choose Lowe Fab?

We don’t cut corners — we machine them. This kit combines OE-level engineering with real-world installer insight, delivering a kit that not only works better — but looks better too. Made by enthusiasts, for enthusiasts.