PORSCHE 911 Bolt-in T45 roll cage. FIA / MSUK Certificated to Appendix K

FIA Certificated

Why Choose a Fully Certificated Roll Cage?

FIA Certificated roll cages offer a significant competitive edge over cages built to either MSUK or Minima FIA compliance standards. Engineered with high-performance materials and optimized geometry, they deliver maximum strength with minimal weight — often up to 20 kg lighter than minima-compliant designs, as they are often designed with smaller diameter and thinner gauge tube.

Key Features & Advantages

• FIA Certificated Designs
  Built in accordance with the latest FIA roll cage homologation regulations. These designs are eligible for both UK and international events.
• Superior Strength-to-Weight Ratio
  Constructed from high-tensile T45 tubing (minimum tensile strength: 700 MPa), allowing for smaller diameter and thinner wall thickness without compromising structural integrity.
• Stress-Tested Engineering
  Each design is derived from a 3D scan, FEA tested to verify its integrity, stiffness, and optimal load paths. The FEA testing is completed by an independent FIA test house.
• Weight Savings
  On certain models, you can see a weight saving of up to 20 kg lighter than equivalent minima roll cages — a crucial advantage in competitive motorsport.
• Global Acceptance
  FIA certification ensures global recognition and eligibility for competition.
• Increased Vehicle Value
  Professionally installed certificated cages can enhance resale value and marketability.

Historic

“A piece of motorsport history! Especially in historic racing.” This is the opening statement for your car build, and Custom Cages can help keep to this motto.

When it comes to historic racing, the design of safety equipment like roll cages is crucial for both safety and authenticity. FIA Appendix K sets strict guidelines that allow historic cars to maintain their original appearance and geometry, while ensuring that safety standards meet the necessary requirements.

The simplicity of historic cages compared to modern ones can be attributed to the fact that materials and engineering standards were different back in the day. The emphasis was more on protecting the driver from certain types of crashes rather than achieving the multipoint designs of today’s standards.

In historic motorsport, the goal is often to balance modern safety standards while still maintaining historical accuracy. Modern cages are more robust, but they don’t necessarily replicate the way cars were originally reinforced, which can affect the authenticity of the driving experience.

Weld-in cages are still acceptable under the current rules, which is a plus for many restorers and classic drivers, as they provide a strong, period-appropriate safety solution.

Bolt In

Key Features of the Bolt-in Roll Cage Kit:

• Quick Installation:
  • These kits offer a convenient way to install a roll cage in a car, especially compared to weld-in kits.
  • Installation is simplified as it mostly requires bolting, with welding needed only for the footplates.
• Strength and Lightness:
  • Using our FIA Certified Lap-Joints: These lap joints are a key feature, offering stronger and lighter performance compared to traditional fixings. Their design also makes them nearly invisible once the cage is painted.
• Footplate Design:
  • Traditional footplate boxes are not used due to their unacceptability in international events, replaced with underfloor doubler plates, which are more robust and secure.
• OEM Mounting Points:
  • Some of our bolt-in designs utilise OEM mounting points in the body shell. This method is not suitable for MSUK or FIA-sanctioned events — please contact the technical sales team for further details.
• Fixing Points:
  • Depending on the car’s category and model, there are up to 14 fixing points.
• High-Quality Fasteners:
  • The kit uses high tensile 12.9 grade fixings, which are strong, durable, and included with the kit.
• Coating Options:
  • The kit can be supplied either with a powder-coated finish for extra durability and aesthetics, or in plain steel, which can be customized by the installer.