RaceHubz Mono-Lok™ System

A Smarter Way to Secure Your Centerlock System

Most centerlock conversion kits follow the same design: once the centerlock nut is torqued, a small retaining clip is installed to help prevent the nut from backing off.

We believed there was a better way.

That's why every RaceHubz Centerlock Conversion is built around our proprietary Mono-Lok™ system.

Instead of leaving the adapter hollow, Mono-Lok features an integrated spring-loaded spline mechanism built directly into the adapter itself. As the centerlock nut is threaded on, it rotates freely until it reaches the locking splines. Once aligned, the spring automatically engages the splines inside the nut, mechanically locking it into place.

The result is a centerlock system that remains locked until you intentionally release it.

Designed to Lock. Engineered to Release.

Removing or installing the centerlock nut is just as simple.

Our dedicated RaceHubz removal tool engages the nut while simultaneously depressing the internal spring-loaded spline. This temporarily disengages the locking mechanism, allowing the nut to rotate freely for installation, torqueing, or removal.

Once the tool is removed, Mono-Lok automatically re-engages and locks the system back into place.

No extra clips.
No separate locking components.
Just one integrated system.

Why Mono-Lok?

✔ Integrated mechanical locking system

✔ Spring-loaded automatic engagement

✔ Purpose-built installation and removal tool

✔ Clean, OEM-inspired design

✔ Engineered exclusively by RaceHubz

At RaceHubz, we don't just manufacture centerlock conversions—we engineer better solutions. Mono-Lok™ is our answer to a simpler, cleaner, and more refined approach to centerlock security.