Stilo ST6 F GT Composite Helmet

The Stilo ST6 F GT Composite Helmet is engineered for GT and endurance racing — the key difference from the standard ST6 F is the removable sun visor in place of a standard clear visor, designed for mixed-condition and daytime endurance events where glare management is critical. FIA 8859-2024 and Snell SA2025 certified, with a lightweight composite shell, factory-fitted HANS/FHR posts, and integrated Stilo electronics. Up to 11% lighter than the previous ST5 GT Composite.

Looking for a standard clear visor? See the ST6 F Composite — same FIA 8859-2024 and SA2025 certification, standard circuit visor. For the carbon shell, see the ST6 F Carbon.

Key Specifications

• Certification: FIA 8859-2024 and Snell SA2025 — accepted by MSNZ and Motorsport Australia for GT and circuit racing
• Visor: Removable sun visor — designed for GT and endurance racing in mixed or bright conditions
• Shell: Lightweight composite — three shell sizes across XS–XXXL
• Weight: From approximately 1,230 g (small shell) — up to 11% lighter than the ST5 GT Composite
• HANS/FHR Posts: Factory fitted as standard
• Ventilation: Six chin bar vents, crown vents, and padding channels for maximum airflow
• Microphone: Integrated adjustable dynamic noise-cancelling microphone
• Connector: Stilo proprietary EzyFlow audio connector — select your option on this page
• Drinks system: Hydration tube integration ready
• Top Air System: Compatible with optional Stilo Top Air System

ST6 F vs ST6 F GT — What Is the Difference?

Which Stilo ST6 Helmet Is Right for You?

Audio Connector — How It Works

The ST6 F GT Composite uses Stilo's proprietary EzyFlow audio connector. Select your audio connector option on this page. Harris Race Radios fits your chosen connector directly to the helmet before dispatch.

• EarMuff / Speakers — Large padded ear cups with built-in speakers. Best for noisy environments — circuit, GT, endurance, and off-road. Provides passive noise isolation alongside clear audio. Most popular for loud cockpits.
• Stilo Earbud Connector — Stilo's proprietary push-lock connector, exclusive to Stilo helmets. Not compatible with third-party earpieces without an adapter.
• 3.5mm Mono Connector — The most widely used audio connector in NZ, Australia, and the USA. Compatible with the majority of aftermarket earpieces and radio setups. The go-to choice for non-Stilo custom earpieces.
• RCA Connector — Predominantly used in European race teams and systems. Check your audio input type before selecting.

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

Why Harris Race Radios for Stilo?

Harris Race Radios is NZ and AU's most experienced Stilo specialist — genuine Stilo stock sourced directly through Stilo's supply chain, held locally in NZ for fast dispatch and shipped to Australia with tracked courier.

Rex Harris — qualified Radio Telecommunications Engineer, Approved Radio Certifier for NZ RSM and AU ACMA, motorsport radio experience since 1975 starting at the Marlboro Series Grand Prix. Rex installs and configures all Stilo helmet electronics, intercoms, and radio systems across NZ and AU motorsport.

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 for helmets, racewear, FHR, and HANS devices.

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

Frequently Asked Questions

What is the difference between the ST6 F and ST6 F GT?
The ST6 F GT has a removable sun visor instead of a standard clear visor, and includes factory-fitted HANS/FHR posts as standard. Both carry FIA 8859-2024 and SA2025 certification. Choose the GT if you race in GT class, endurance events, or mixed-condition racing where glare management matters.

Is the ST6 F GT Composite legal for MSNZ and Motorsport Australia GT events?
Yes — FIA 8859-2024 and Snell SA2025 certified. Accepted by MSNZ and Motorsport Australia for GT class and circuit racing. Always verify current series regulations with your organiser.

Does this helmet include HANS posts?
Yes — factory-fitted FHR/HANS posts are included as standard.

What connector options are available?
EarMuff/Speakers, Stilo Earbud, 3.5mm Mono, or RCA. Select on this page — Harris Race Radios fits your chosen connector before dispatch. Contact us for advice on which suits your system.

Can Harris Race Radios fit my existing intercom or radio system to this helmet?
Yes — Harris Race Radios fits all major intercom and radio systems to Stilo helmets, including Harris, Peltor, Rugged Radios, Terraphone, and MRTC. Contact us to discuss your setup.

How do I choose the right size?
Measure the widest circumference of your head above the ears. When in doubt, size down. Contact us for fitting advice.

Do you ship to Australia?
Yes — NZ stock held locally for fast dispatch, shipped to Australia with tracked courier.

Related Products

• Stilo ST6 F Composite — FIA 8859-2024 and SA2025, standard clear visor
• Stilo ST6 F Carbon — FIA 8859-2024 and SA2025, carbon shell
• Stilo ST6 FN Composite — naked shell, custom comms
• HANS and FHR Devices

Watch: Why Safety Gear Saves Lives — Aaron Harris Manfield Crash

Aaron Harris — professional race driver, race engineer, and MSNZ helmet fitting specialist — was involved in a serious crash at Manfield. He walked away. This is why the helmet you choose matters.

Aaron Harris — Manfield crash, NZ. Full safety gear: Stilo helmet, HANS device, FIA-rated racewear. He walked away.