Rock Hard 4x4 is very proud to offer the original and most trusted bolt-in fabrication ready collar in the industry.
Our proprietary locking collars are arguably the safest and most secure way to not only strengthen your fabrication project but also provide limitless mounting methods.Patented Design
Protected by Patent US6908107
and used in all our cage systems, our locking collars are the foundation for our Ultimate Sports Cage upgrade. Magazine editors, trail guides, wheelers from across the world, and even competitors have turned to our bolt-in cage for over a decade for their own vehicles. The strength our collars provide is inherent in how they couple our cage components together. Strength
With our patent secured over a decade ago we began production on our cages. Each collar, cap, and tube component in our system is produced in house. This gives us total control over manufacturing to ensure that once a fabrication collar leaves our facility and gets installed in your project, we know it will continue to uphold our sterling reputation.
Our locking collars and caps are solid 1/2" thick CNC machined steel and produced in house. Each cap is secured to it's matching collar with six 5/16" x 1" grade 8 socket head cap screws. Once a cap is secured to it's collar it becomes a solid, unbreakable joint. This means assembly and disassembly is achieved without welding or cutting which could potentially damage your vehicle's interior or expensive powder coat/paint finish.
D. 3.448What comes in every kit:
Three Reasons Why:
- Fabrication ready collar
- Matching cap
- Patented design
- Decades of proven strength
- Unmatched quality and fitment
FAQ:How secure is the RH4x4 locking collar?
If we didn't believe 100% in our collar design we wouldn't run it in our own rigs. It's patented design provides an unbreakable joint and you can feel confident will keep you and your passengers safe for a lifetime of trail use.What finish is available?
Our fabrication collars ship in a raw, bare metal finish. This prevents potential shipping damage but more importantly allows you the freedom to select your own color locally. Continue a color theme into your cabin for a more unique look!Where is this mount made?
This product, like all RH4x4 parts, was designed, developed, tested, manufactured, and if applicable, powdercoated, and shipped in the USA. And we don't mean the 75% legal standard to be able to say Made in USA. We are 100% Made in the United States of America!