{"product_id":"bell-hp6-8860-2018-carbon-fiber-helmet-with-built-in-electronics","title":"Bell HP6 8860-2018 RD-4C Carbon Fiber Helmet with Built-in Electronics\/Hydration","description":"\u003ch1\u003e\n\u003cmeta charset=\"utf-8\"\u003eBell HP6 RD-4C FIA 8860-2018 Carbon Fiber Racing Helmet\u003c\/h1\u003e\n\u003cdiv style=\"text-align: left;\"\u003e\u003cimg alt=\"Bell HP6 RD-4C FIA 8860-2018 carbon fiber racing helmet hero image highlighting integrated communication, hydration routing, forced-air compatibility and HANS anchors\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0647\/9242\/8763\/files\/bell-hp6-rd-4c-fia-8860-2018-carbon-fiber-helmet-hero-image.jpg?v=1787672412\" style=\"float: none;\"\u003e\u003c\/div\u003e\n\u003cp\u003eThe 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 \u003cstrong\u003eFIA 8860-2018\u003c\/strong\u003e standard.\u003c\/p\u003e\n\u003cp\u003eThe 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.\u003c\/p\u003e\n\u003ch2\u003eBell HP6 RD-4C FIA 8860-2018 Helmet Features\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eUltra-lightweight Advanced full carbon fiber shell\u003c\/li\u003e\n\u003cli\u003eFIA 8860-2018 homologated\u003c\/li\u003e\n\u003cli\u003eDesigned specifically for closed-cockpit racing\u003c\/li\u003e\n\u003cli\u003eWide eyeport for excellent forward and peripheral visibility\u003c\/li\u003e\n\u003cli\u003eIntegrated RD-4C radio communication electronics\u003c\/li\u003e\n\u003cli\u003eDesigned for use with compatible earbuds\u003c\/li\u003e\n\u003cli\u003e3.5mm connector compatible with earplug transducers\u003c\/li\u003e\n\u003cli\u003eIntegrated dynamic noise-cancelling microphone\u003c\/li\u003e\n\u003cli\u003eIntegrated hydration routing and drinking-system connection\u003c\/li\u003e\n\u003cli\u003eAdvanced multi-density, multi-piece impact liner\u003c\/li\u003e\n\u003cli\u003eExtraction vents maximize airflow and cooling\u003c\/li\u003e\n\u003cli\u003eCompatible with optional forced-air cooling systems\u003c\/li\u003e\n\u003cli\u003eFactory-installed HANS anchors\u003c\/li\u003e\n\u003cli\u003eBell SE06 3mm DSAF shield system\u003c\/li\u003e\n\u003cli\u003eDark Grey high-strength, high-comfort FR interior\u003c\/li\u003e\n\u003cli\u003eMatte carbon fiber exterior finish\u003c\/li\u003e\n\u003cli\u003eBell HP helmet bag included\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eIntegrated RD-4C Radio Communication System\u003c\/h2\u003e\n\u003cp\u003eThe 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.\u003c\/p\u003e\n\u003cp\u003eThe 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.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eIntegrated 4-conductor IMSA-style communication system\u003c\/li\u003e\n\u003cli\u003eDynamic noise-cancelling microphone integrated into the face piece\u003c\/li\u003e\n\u003cli\u003eCoil-style communication cable\u003c\/li\u003e\n\u003cli\u003eHeavy-duty molded 4-pin connector\u003c\/li\u003e\n\u003cli\u003e3.5mm connection for compatible earbud transducers\u003c\/li\u003e\n\u003cli\u003eCommunication components integrated without drilling the helmet\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eEarbuds are not included.\u003c\/strong\u003e Drivers can select compatible earplug transducers based on their radio and communication requirements.\u003c\/p\u003e\n\u003ch2\u003eRD-4C vs. RD-4C\/EC\u003c\/h2\u003e\n\u003cp\u003eThe 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.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eHP6 RD-4C:\u003c\/strong\u003e Designed for use with compatible in-ear earbuds or earplug transducers. Earbuds are not included.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHP6 RD-4C\/EC:\u003c\/strong\u003e Uses integrated electronic speakers and earcups for communication and additional noise isolation.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe RD-4C is ideal for racers who prefer molded or conventional racing earbuds and want to minimize additional components around the ears.\u003c\/p\u003e\n\u003ch2\u003eIntegrated Hydration System Routing\u003c\/h2\u003e\n\u003cp\u003eLong-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.\u003c\/p\u003e\n\u003cp\u003eThe 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.\u003c\/p\u003e\n\u003cp\u003eThe external drinking system and bite valve are not included and must be selected separately based on the driver's hydration setup.\u003c\/p\u003e\n\u003ch2\u003eAdvanced FIA 8860-2018 Carbon Fiber Construction\u003c\/h2\u003e\n\u003cp\u003eThe 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.\u003c\/p\u003e\n\u003cp\u003eFIA 8860 helmets are developed for demanding professional motorsports environments where protection, weight, visibility, and driver comfort are critical.\u003c\/p\u003e\n\u003ch2\u003eWide Eyeport for Closed-Cockpit Racing\u003c\/h2\u003e\n\u003cp\u003eThe 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.\u003c\/p\u003e\n\u003cp\u003eThis design makes the HP6 particularly well suited for GT cars, touring cars, prototypes, endurance cars, and other closed-cockpit competition vehicles.\u003c\/p\u003e\n\u003ch2\u003eBell SE06 3mm DSAF Shield\u003c\/h2\u003e\n\u003cp\u003eThe Bell HP6 uses the Bell SE06 3mm helmet shield. A clear DSAF shield is included and installed on the helmet.\u003c\/p\u003e\n\u003cp\u003eBell's DSAF shield construction is designed to provide excellent optical clarity while helping control fogging in demanding racing environments.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eBell SE06 3mm shield system\u003c\/li\u003e\n\u003cli\u003eClear DSAF shield included\u003c\/li\u003e\n\u003cli\u003ePlastic tear-off posts installed\u003c\/li\u003e\n\u003cli\u003eWide eyeport design for improved visibility\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eVentilation and Forced-Air Cooling Compatibility\u003c\/h2\u003e\n\u003cp\u003eStrategically 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.\u003c\/p\u003e\n\u003cp\u003eA 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.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eIntegrated extraction vents maximize airflow\u003c\/li\u003e\n\u003cli\u003eOptional left- or right-side top forced-air connection\u003c\/li\u003e\n\u003cli\u003eCompatible with external helmet cooling systems\u003c\/li\u003e\n\u003cli\u003eQuick Lock V10 forced-air components available\u003c\/li\u003e\n\u003cli\u003eCompatible with Maglock forced-air connections\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eBell HP6 RD-4C Specifications\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eManufacturer: Bell Helmets\u003c\/li\u003e\n\u003cli\u003eModel: HP6 RD-4C\u003c\/li\u003e\n\u003cli\u003ePart Number Series: 1140101-1140109, depending on size\u003c\/li\u003e\n\u003cli\u003eHelmet Type: Full-face closed-cockpit racing helmet\u003c\/li\u003e\n\u003cli\u003eShell Construction: Advanced full carbon fiber\u003c\/li\u003e\n\u003cli\u003eExterior Finish: Matte Carbon\u003c\/li\u003e\n\u003cli\u003eHomologation: FIA 8860-2018\u003c\/li\u003e\n\u003cli\u003eCommunication: Integrated RD-4C radio electronics for earbuds\u003c\/li\u003e\n\u003cli\u003eEarbuds: Not included\u003c\/li\u003e\n\u003cli\u003eMicrophone: Integrated dynamic noise-cancelling microphone\u003c\/li\u003e\n\u003cli\u003eEarbud Connection: 3.5mm\u003c\/li\u003e\n\u003cli\u003eHydration: Integrated routing and drinking-system connection\u003c\/li\u003e\n\u003cli\u003eHANS Anchors: Factory installed\u003c\/li\u003e\n\u003cli\u003eInterior: Dark Grey high-strength, high-comfort FR fabric\u003c\/li\u003e\n\u003cli\u003eShield: Bell SE06 3mm DSAF\u003c\/li\u003e\n\u003cli\u003eHelmet Bag: Bell HP helmet bag included\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eSpecial-Order Interior Colors\u003c\/h2\u003e\n\u003cp\u003eThe 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.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eTan\u003c\/li\u003e\n\u003cli\u003eWhite\u003c\/li\u003e\n\u003cli\u003eRed\u003c\/li\u003e\n\u003cli\u003ePurple\u003c\/li\u003e\n\u003cli\u003eBlue\u003c\/li\u003e\n\u003cli\u003eGreen\u003c\/li\u003e\n\u003cli\u003eNeon Yellow\u003c\/li\u003e\n\u003cli\u003ePink\u003c\/li\u003e\n\u003cli\u003eOrange\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003eWhat's Included With the Bell HP6 RD-4C\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003eBell HP6 RD-4C FIA 8860-2018 carbon fiber racing helmet\u003c\/li\u003e\n\u003cli\u003eIntegrated RD-4C communication electronics\u003c\/li\u003e\n\u003cli\u003eIntegrated noise-cancelling microphone\u003c\/li\u003e\n\u003cli\u003eIntegrated hydration routing\u003c\/li\u003e\n\u003cli\u003eClear Bell SE06 3mm DSAF shield installed\u003c\/li\u003e\n\u003cli\u003eFactory-installed HANS anchors\u003c\/li\u003e\n\u003cli\u003ePlastic tear-off posts installed\u003c\/li\u003e\n\u003cli\u003eBell HP helmet bag\u003c\/li\u003e\n\u003cli\u003eHex wrench key\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eEarbuds, bite valve, and external drinking system are not included.\u003c\/p\u003e\n\u003ch2 style=\"text-align: center;\"\u003eBell HP6 RD-4C Helmet Sizing Chart\u003c\/h2\u003e\n\u003cp\u003e\u003cimg alt=\"Bell HP6 RD-4C FIA 8860-2018 carbon fiber racing helmet sizing chart with head circumference measurements in centimeters and inches\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0647\/9242\/8763\/files\/bell-hp6-rd-4c-helmet-sizing-chart-image.jpg?v=1787672278\"\u003e\u003c\/p\u003e\n\u003cp\u003eRead the Discovery Parts Auto Racing Helmet Buyer's Guide for more information about measuring, helmet fit, safety standards, and selecting the correct racing helmet.\u003c\/p\u003e\n\u003ch2\u003eQuestions About the Bell HP6 RD-4C\u003c\/h2\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What certification does the Bell HP6 RD-4C have?\u003c\/strong\u003e\u003cbr\u003eA: The Bell HP6 RD-4C is homologated to the FIA 8860-2018 helmet standard.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does the HP6 RD-4C have built-in radio electronics?\u003c\/strong\u003e\u003cbr\u003eA: Yes. The RD-4C has an integrated radio communication system with a noise-cancelling microphone and wiring designed for compatible in-ear transducers.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Are earbuds included with the HP6 RD-4C?\u003c\/strong\u003e\u003cbr\u003eA: No. The RD-4C is wired for compatible earbuds or earplug transducers, but the earbuds themselves are not included.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What is the difference between the HP6 RD-4C and RD-4C\/EC?\u003c\/strong\u003e\u003cbr\u003eA: 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.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does the HP6 RD-4C include hydration equipment?\u003c\/strong\u003e\u003cbr\u003eA: The helmet includes integrated hydration routing and a drinking-system connection. The external drinking system and bite valve are not included.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does the Bell HP6 RD-4C include HANS anchors?\u003c\/strong\u003e\u003cbr\u003eA: Yes. HANS anchors are factory installed.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can the HP6 RD-4C be used with a forced-air cooling system?\u003c\/strong\u003e\u003cbr\u003eA: Yes. Optional forced-air components can be installed on the upper left or right ventilation locations for connection to an external helmet cooling system.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What shield fits the Bell HP6?\u003c\/strong\u003e\u003cbr\u003eA: The Bell HP6 uses the Bell SE06 3mm shield system and includes a clear DSAF shield.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is a helmet bag included?\u003c\/strong\u003e\u003cbr\u003eA: Yes. A Bell HP helmet bag is included with the HP6 RD-4C.\u003c\/p\u003e\n\u003cp\u003e```\u003c\/p\u003e","brand":"Bell Racing Helmets","offers":[{"title":"57","offer_id":50878710612187,"sku":"1140104","price":2759.95,"currency_code":"USD","in_stock":true},{"title":"58","offer_id":50878710644955,"sku":"1140105","price":2759.95,"currency_code":"USD","in_stock":true},{"title":"59","offer_id":50878710677723,"sku":"1140106","price":2759.95,"currency_code":"USD","in_stock":true},{"title":"60","offer_id":50878710710491,"sku":"1140107","price":2759.95,"currency_code":"USD","in_stock":true},{"title":"61","offer_id":50878710743259,"sku":"1140108","price":2759.95,"currency_code":"USD","in_stock":false},{"title":"61+","offer_id":50878710776027,"sku":"1140109","price":2759.95,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0667\/5614\/9467\/files\/bell-hp6-8860-2018-rd-4c-carbon-fiber-helmet-with-built-in-electronicshydration-419176.jpg?v=1792593114","url":"https:\/\/discoveryparts.com\/products\/bell-hp6-8860-2018-carbon-fiber-helmet-with-built-in-electronics","provider":"Discovery Parts","version":"1.0","type":"link"}