Bell GT6 RD ULTRA-4C/EC Carbon Fiber

Pre-Order: Shipping in July 2026

FIA 8859-2024/SA2025 Helmet

The Bell GT6 RD ULTRA-4C/EC delivers pro-grade safety and communication in a lightweight, closed-cockpit package. Drawing design inspiration from the aggressive HP6 platform, it features a wide eyeport for integrated visibility, a premium carbon composite shell, and all-in communications and hydration solutions built in.

4C: Carbon Composite 4 Layer Construction

On Bell helmets, “4C” stands for “Carbon Composite 4 Layer Construction.” It refers to the shell technology Bell uses: a 4-layer carbon composite laminate. This blend typically combines carbon fiber with other advanced fibers (like Kevlar® or fiberglass) in multiple layers. The purpose is to deliver a shell that is lighter than fiberglass alone, but more affordable and versatile than Bell’s top-end full carbon HP series shells (like HP7 or HP77 which use pure carbon/advanced aerospace layups).

EC: Electronic Communications Integration

The "EC” in model name means the helmet incorporates an electronic comms and hydration kit integration. The closed-face GT6 RD ULTRA-4C/EC integrates the latest technology from ZeroNoise® including advanced electronics, high power speakers, and noise canceling microphone to assure outstanding performance, sound insulation, and communication efficiency.

Ultra-Light Carbon Construction Meets Pro Racing Preparedness

Built with superior carbon-glass composite materials, the helmet keeps fatigue low and track awareness high. Integrated ZeroNoise® electronics, high-power speakers, and a noise-canceling mic ensure outstanding comms and sound insulation. The face piece is also optimized for ventilation and hydration—perfect for endurance and closed-cockpit racers.

Bell GT6 RD ULTRA-4C/EC Carbon Fiber SA2025 Helmet Size Chart

Bell GT6 RD ULTRA-4C/EC Carbon Fiber SA2025 Helmet Details

• Design Derived From: HP6 RD-4C platform
• Shell: Ultra-lightweight carbon-glass composite
• Certifications: FIA 8859-2024 and Snell SA 2025
• Eyeport: Wide for expanded visibility
• ZeroNoise® Comms: Built-in speakers, noise-canceling mic, and heavy-duty coil cable with Nexus connector
• Hydration: Integrated drink-tube channels and side connectors
• Ventilation: Extraction vents + optional top/side forced-air intake compatibility
• HANS Anchors: Factory-installed for added safety
• Color & Finish: Gloss Carbon
• Interior: Dark grey, high-strength FR fabric (alt interior colors by special order)
• Sizes: 54 (6¾) through 61+ (7 ⅝)

Bell GT6 RD ULTRA-4C/EC Carbon Fiber SA2025 Helmet Features

1. Ultra-lightweight Premium Carbon shell
2. Equipped with Bell Racing SmartLock Mechanism
3. Wide eyeport opening for optimal vision in closed cockpit cars (Shield type SE06)
4. Advanced multi-density, multi-piece liner to maximize energy absorption and impact performance
5. Integrated channels in face piece offering multiple options to install drinking tube, valves and radio systems
6. Extraction vents to maximize cooling and air circulation
7. Integrated technology from ZeroNoise® including advanced electronics high power speakers, and noise canceling microphone
8. Factory installed Hans anchors as original equipment
9. Optional Top and Side air intakes available for use with external cooling system
10. Compatible with interior parts kits and drinking tube kits

Bell GT6 RD ULTRA-4C/EC Carbon Fiber SA2025 Helmet FAQs

What does “4C/EC” mean?
4C stands for "Carbon Composite 4 Layer Construction", and EC indicates electronic communication and hydration integrations are factory-installed.

Which helmet series does this come from?
Derived from the closed-cockpit GT6 platform with HP6 lineage—designed for serious GT and endurance racers.

What communication system is included?
An integrated ZeroNoise® kit with high-power speakers, a noise-canceling mic, Nexus connector, and hydration ports come built in.

Can I add forced air later?
Yes. Compatible top and side intake kits are available for enhanced cooling.

Is this track-legal?
Yes. It’s dual-certified to FIA 8859-2024 and Snell SA2025—check your series rules to confirm.

What customization options exist?
Alternate interior colors, ear muff covers, and aero accessories are available by special order or as add-ons.

Race with lightweight carbon construction, pro-level comms, and cockpit-focused visibility.