Bell HP6 RD-4C FIA 8860-2018 Carbon Fiber Racing Helmet
The Bell HP6 RD-4C Carbon Fiber Racing Helmet combines Bell's professional-level HP helmet technology with an integrated radio communication and hydration configuration designed specifically for closed-cockpit racing. Based on technology developed for Bell's HP7 platform, the HP6 features an ultra-lightweight Advanced full carbon fiber shell and is homologated to the demanding FIA 8860-2018 standard.
The RD-4C version is designed for drivers who prefer in-ear communication. Bell integrates the radio electronics, noise-cancelling microphone, communication wiring, and hydration routing directly into the helmet, eliminating the need to drill or modify the chin bar. The communication system is ready for compatible 3.5mm earbud transducers, while the integrated hydration routing provides a clean solution for endurance and long-duration racing.
Bell HP6 RD-4C FIA 8860-2018 Helmet Features
- Ultra-lightweight Advanced full carbon fiber shell
- FIA 8860-2018 homologated
- Designed specifically for closed-cockpit racing
- Wide eyeport for excellent forward and peripheral visibility
- Integrated RD-4C radio communication electronics
- Designed for use with compatible earbuds
- 3.5mm connector compatible with earplug transducers
- Integrated dynamic noise-cancelling microphone
- Integrated hydration routing and drinking-system connection
- Advanced multi-density, multi-piece impact liner
- Extraction vents maximize airflow and cooling
- Compatible with optional forced-air cooling systems
- Factory-installed HANS anchors
- Bell SE06 3mm DSAF shield system
- Dark Grey high-strength, high-comfort FR interior
- Matte carbon fiber exterior finish
- Bell HP helmet bag included
Integrated RD-4C Radio Communication System
The Bell HP6 RD-4C is equipped with Bell's 4-conductor IMSA-style helmet radio configuration. A dynamic noise-cancelling microphone is integrated directly into the helmet's face piece and pre-wired for use with compatible racing radio systems.
The system includes a coil-style communication cord with a heavy-duty molded 4-pin connector and a 3.5mm connection designed for compatible in-ear transducers. This makes the RD-4C an excellent choice for drivers who prefer earbuds rather than traditional helmet-mounted speakers.
- Integrated 4-conductor IMSA-style communication system
- Dynamic noise-cancelling microphone integrated into the face piece
- Coil-style communication cable
- Heavy-duty molded 4-pin connector
- 3.5mm connection for compatible earbud transducers
- Communication components integrated without drilling the helmet
Earbuds are not included. Drivers can select compatible earplug transducers based on their radio and communication requirements.
RD-4C vs. RD-4C/EC
The Bell HP6 RD-4C and RD-4C/EC share the same FIA 8860-2018 Advanced carbon fiber helmet platform, but they use different driver audio configurations.
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HP6 RD-4C: Designed for use with compatible in-ear earbuds or earplug transducers. Earbuds are not included.
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HP6 RD-4C/EC: Uses integrated electronic speakers and earcups for communication and additional noise isolation.
The RD-4C is ideal for racers who prefer molded or conventional racing earbuds and want to minimize additional components around the ears.
Integrated Hydration System Routing
Long-duration and endurance racing can make driver hydration critical. The HP6 RD-4C incorporates dedicated channels and connections for hydration equipment directly into the helmet design.
The integrated system includes routing and a one-way connection for a drinking system, allowing hydration components to be installed without drilling the helmet's chin bar or modifying the face piece.
The external drinking system and bite valve are not included and must be selected separately based on the driver's hydration setup.
Advanced FIA 8860-2018 Carbon Fiber Construction
The HP6 uses Bell's Advanced full carbon fiber shell technology to combine exceptional strength with extremely low weight. The shell is paired with an advanced multi-density, multi-piece energy-absorbing liner engineered for the high impact-performance requirements of FIA 8860-2018 competition.
FIA 8860 helmets are developed for demanding professional motorsports environments where protection, weight, visibility, and driver comfort are critical.
Wide Eyeport for Closed-Cockpit Racing
The Bell HP6 was designed specifically for racers competing in enclosed vehicles. Its wide eyeport provides an expansive field of vision to help improve visibility of mirrors, instruments, competitors, and track surroundings.
This design makes the HP6 particularly well suited for GT cars, touring cars, prototypes, endurance cars, and other closed-cockpit competition vehicles.
Bell SE06 3mm DSAF Shield
The Bell HP6 uses the Bell SE06 3mm helmet shield. A clear DSAF shield is included and installed on the helmet.
Bell's DSAF shield construction is designed to provide excellent optical clarity while helping control fogging in demanding racing environments.
- Bell SE06 3mm shield system
- Clear DSAF shield included
- Plastic tear-off posts installed
- Wide eyeport design for improved visibility
Ventilation and Forced-Air Cooling Compatibility
Strategically positioned extraction vents help move warm air out of the helmet and improve circulation around the driver's head. For cars equipped with external driver cooling systems, the HP6 can also accept optional forced-air components.
A top forced-air intake can be installed on either the left or right upper ventilation location, giving racers flexibility when routing cooling hoses through different cockpit layouts.
- Integrated extraction vents maximize airflow
- Optional left- or right-side top forced-air connection
- Compatible with external helmet cooling systems
- Quick Lock V10 forced-air components available
- Compatible with Maglock forced-air connections
Bell HP6 RD-4C Specifications
- Manufacturer: Bell Helmets
- Model: HP6 RD-4C
- Part Number Series: 1140101-1140109, depending on size
- Helmet Type: Full-face closed-cockpit racing helmet
- Shell Construction: Advanced full carbon fiber
- Exterior Finish: Matte Carbon
- Homologation: FIA 8860-2018
- Communication: Integrated RD-4C radio electronics for earbuds
- Earbuds: Not included
- Microphone: Integrated dynamic noise-cancelling microphone
- Earbud Connection: 3.5mm
- Hydration: Integrated routing and drinking-system connection
- HANS Anchors: Factory installed
- Interior: Dark Grey high-strength, high-comfort FR fabric
- Shield: Bell SE06 3mm DSAF
- Helmet Bag: Bell HP helmet bag included
Special-Order Interior Colors
The standard HP6 interior uses Bell's Dark Grey high-strength, high-comfort FR fabric. Alternative interior colors may be available by special order for an additional charge.
- Tan
- White
- Red
- Purple
- Blue
- Green
- Neon Yellow
- Pink
- Orange
What's Included With the Bell HP6 RD-4C
- Bell HP6 RD-4C FIA 8860-2018 carbon fiber racing helmet
- Integrated RD-4C communication electronics
- Integrated noise-cancelling microphone
- Integrated hydration routing
- Clear Bell SE06 3mm DSAF shield installed
- Factory-installed HANS anchors
- Plastic tear-off posts installed
- Bell HP helmet bag
- Hex wrench key
Earbuds, bite valve, and external drinking system are not included.
Bell HP6 RD-4C Helmet Sizing Chart
Read the Competition Motorsport Auto Racing Helmet Buyer's Guide for more information about measuring, helmet fit, safety standards, and selecting the correct racing helmet.
Questions About the Bell HP6 RD-4C
Q: What certification does the Bell HP6 RD-4C have?
A: The Bell HP6 RD-4C is homologated to the FIA 8860-2018 helmet standard.
Q: Does the HP6 RD-4C have built-in radio electronics?
A: Yes. The RD-4C has an integrated radio communication system with a noise-cancelling microphone and wiring designed for compatible in-ear transducers.
Q: Are earbuds included with the HP6 RD-4C?
A: No. The RD-4C is wired for compatible earbuds or earplug transducers, but the earbuds themselves are not included.
Q: What is the difference between the HP6 RD-4C and RD-4C/EC?
A: The RD-4C is designed for use with earbuds. The RD-4C/EC configuration uses electronic speakers and earcups for communication and additional noise isolation.
Q: Does the HP6 RD-4C include hydration equipment?
A: The helmet includes integrated hydration routing and a drinking-system connection. The external drinking system and bite valve are not included.
Q: Does the Bell HP6 RD-4C include HANS anchors?
A: Yes. HANS anchors are factory installed.
Q: Can the HP6 RD-4C be used with a forced-air cooling system?
A: Yes. Optional forced-air components can be installed on the upper left or right ventilation locations for connection to an external helmet cooling system.
Q: What shield fits the Bell HP6?
A: The Bell HP6 uses the Bell SE06 3mm shield system and includes a clear DSAF shield.
Q: Is a helmet bag included?
A: Yes. A Bell HP helmet bag is included with the HP6 RD-4C.
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