Stilo ST6 F Zero Carbon Helmet

The Stilo ST6 F Zero Carbon Helmet is a high-tensile carbon helmet for circuit and GT drivers in series that require FIA 8860-2018. It starts from 1,240 g (XS shell), with an integrated radio connection and a dynamic noise-cancelling microphone.

Looking for FIA 8859-2024 / SA2025 certification? See the ST6 F Carbon, PURO carbon shell with dual FIA 8859-2024 and Snell SA2025 homologation. For a GT-specific carbon shell with full WRC intercom, see the ST6 GT 8860 Carbon.

Technical Specifications

Shell: ‘Zero’ High-Tensile Carbon Fibre with PURO Technology

The ST6 F Zero Carbon is crafted from Stilo's proprietary ‘Zero’ carbon fibre, manufactured using PURO technology, a specialised process that eliminates the need for a clear coat, reducing weight further to help minimise neck strain.

Why it matters: Conventional carbon helmets require a lacquer or filler layer to achieve a smooth finish, adding weight that serves no structural purpose. PURO removes this entirely. In a high-G cornering environment, even small reductions in helmet weight directly reduce neck muscle fatigue and strain, a measurable performance and safety benefit over a long race.

Weight

From 1,240 g (XS shell). Up to 10% lighter than the previous ST5 F Zero model. Larger shell sizes will be marginally heavier.

Why it matters: Less neck strain means better focus and reduced fatigue over long stints, critical in GT and endurance racing.

Certification: FIA 8860-2018

FIA 8860-2018 is a higher FIA standard than FIA 8859-2024. Some top-level single-seater and GT series require it, so check your series rules.

Why it matters: If your series requires FIA 8860-2018, no other standard is an acceptable substitute. The ST6 F Zero Carbon meets this requirement while delivering the weight and comfort advantages of Stilo's Zero carbon fibre construction.

Shell Construction

Four shell sizes for a more precise fit across the full size range, ensuring the shell geometry is optimised for each head size rather than stretching a single shell across all sizes.

Ventilation

Six chin bar vents, along with crown vents and padding channels, ensure maximum airflow to keep you cool and prevent visor fogging, maintaining clear visibility and improving driver focus even in the heat of competition. Special channels in the padding further enhance airflow through the helmet interior, keeping you cooler and reducing fatigue.

Integrated Radio Electronics

Adjustable dynamic noise-cancelling microphone and built-in radio connection port ensure clear, uninterrupted communication without the hassle of external wires, essential for quick and precise team coordination. In-ear speaker connection with integral wiring and connector allows seamless integration of in-ear speakers for direct, clear communication during critical race moments.

Visor

Updated visor with high-performance anti-fog treatment that doesn’t wash off, ensuring long-lasting clarity race after race. Refined pivot mechanism updated for more effortless operation and easier fitment. One-hand visor locking meets FIA 8860-2018 regulations in both fully closed and ventilated positions. Wider lower aperture for improved downward vision of dashboard and cockpit controls.

Cheek Padding

Re-designed cheek pads offer a closer fit and improved stability, enhancing comfort while driving. Customisable with different thickness options (available separately) for a tailored fit and better support.

Additional Features

Enhanced aerodynamics optimised for open cockpit racing: reduces wind noise and drag. Drinks system ready: prepared for hydration tube integration. Top Air System compatible. FHR posts factory fitted.

Included Extras

The ST6 F Zero includes the following extras specific to the Zero model: 1 x dark smoke visor, 1 x medium smoke visor, 1 x visor tear-off kit, clear front spoiler, clear rear spoiler, and a high-quality padded helmet bag.

Sizes Available

54cm, 55cm, 56cm, 57cm, 58cm, 59cm, 61cm, 63cm, 64cm. If you're between sizes or unsure, contact Aaron Harris, experienced motorsport helmet adviser who fits helmets regularly and can advise on correct sizing for your head shape.

Audio Configuration: How It Works

The ST6 F Zero Carbon includes integrated radio electronics with a dynamic noise-cancelling microphone. Select your preferred audio output when ordering. Harris Race Radios configures the helmet before dispatch.

• Speaker Ear Cups: Large padded ear cups with built-in speakers. Best for noisy circuit and GT environments. Provides passive noise isolation alongside clear audio. Most popular for intercom and radio use in loud cockpits.
• Earpiece Connection: Compatible with most aftermarket earpieces. Preferred by professional drivers and competitors in categories where only earpieces are permitted.

Not sure which suits your setup? Contact us and we'll match you to the right option.

Why Harris Race Radios for Your Stilo Helmet

Genuine Stilo products, supplied and supported by Harris Race Radios, held locally in NZ for fast dispatch and shipped to Australia with tracked courier.

Rex Harris, qualified Radio Telecommunications Engineer, RSM Approved Radio Engineer (ARE127) and Approved Radio Certifier (ARC127), motorsport radio experience since 1975 starting at the Marlboro Series Grand Prix. Rex's engineering background means every comms fitment is done correctly, not just plugged in.

Aaron Harris, active racing driver and race engineer: Barcelona 24 Hour 1st in class 2013, Bathurst 1000 and 12 Hour competitor, BMW Race Driver Series Champion 2011 (241 starts, 39 wins), race engineer for Earl Bamber Motorsport, TekworkX, Matt Stone Racing, and Porsche Carrera Cup Australia, Asia-Pacific and New Zealand. MSNZ Licence Examiner. Aaron fits and races in this equipment. His advice is based on real-world experience, not a spec sheet.

NZ stock held locally for fast dispatch. Ships to Australia with tracked courier. Contact us to confirm compliance for your series before ordering.

Motorsport Compliance: NZ & Australia

The Stilo ST6 F Zero Carbon holds current FIA 8860-2018 homologation, for circuit racing, GT and single-seater events that require FIA 8860, subject to the current category and event rules of Motorsport Australia and MotorSport NZ. Aaron Harris is a MotorSport NZ Licence Examiner for licences only. Contact us for fit and model advice, and confirm helmet eligibility using the exact physical label and current category and event rules.

Which Stilo ST6 Helmet Is Right for You?

Frequently Asked Questions

Is the ST6 F Zero Carbon legal for GT and circuit racing in NZ and AU?
It's certified to FIA 8860-2018 for GT and circuit events that require it. Always confirm your specific series regulations with your organiser.

What is the difference between FIA 8860-2018 and FIA 8859-2024?
FIA 8860-2018 is the higher standard, required in some top-level series. FIA 8859-2024 is the current standard for the majority of circuit and rally events. If your series requires 8860, the ST6 F Zero Carbon is certified to it.

What is PURO technology on the ST6 F Zero Carbon?
PURO is Stilo's proprietary carbon fibre manufacturing process. It produces a flawless shell finish from the mould, eliminating clear coats and fillers, removing non-structural weight and reducing neck strain over a race distance.

What extras are included with the ST6 F Zero Carbon?
The Zero model includes: 1 x dark smoke visor, 1 x medium smoke visor, 1 x visor tear-off kit, clear front spoiler, clear rear spoiler, and a high-quality padded helmet bag.

Does this helmet have integrated radio and microphone?
Yes, integrated radio connection and adjustable dynamic noise-cancelling microphone are factory fitted. Specify speaker ear cups or earpiece connection when ordering.

How do I choose the right size?
Measure the widest circumference of your head above the ears in centimetres. When in doubt, size down. Racing helmets should fit firmly with no movement. Contact Aaron Harris, MSNZ Licence Examiner, for sizing advice based on your head shape.

Do you hold stock in NZ and ship to Australia?
Yes, NZ stock held locally for fast dispatch. Australian orders ship with tracked courier.

Helmet instructions and downloads

Stilo Helmet User Manual, 2024 multilingual edition including English (PDF)

Includes model-specific sections on fit, care, visors, peaks and helmet electronics. Follow the section for your exact helmet and supplied configuration. For further documents, visit our Stilo manuals and setup library, or contact Harris Race Radios™ for helmet matching and communications advice.