Stilo ST6 GTN Carbon Helmet

The Stilo ST6 GTN Carbon Helmet is engineered for GT and endurance racing — combining an ultra-lightweight carbon fibre shell certified to FIA 8859-2024 with integrated radio electronics, a dynamic noise-cancelling microphone, factory-fitted HANS posts, and a removable sun visor. The GTN designation indicates the helmet is configured for GT and circuit racing with integrated electronics and HANS posts as standard.

Key Benefits

• Ultra-lightweight carbon shell — maximum protection at minimum weight for GT and endurance racing
• FIA 8859-2024 certified — accepted by MSNZ and Motorsport Australia
• GT and endurance ready — integrated electronics, HANS posts, and removable sun visor all included
• Integrated radio electronics — dynamic noise-cancelling microphone and built-in radio connection
• Removable sun visor — reduces glare during daytime and mixed-condition endurance events
• Backed by 50+ years of expertise — radio engineers and motorsport communications specialists since 1975

Who Is This Helmet For?

• GT class and endurance racing competitors who want a carbon shell with HANS posts and integrated comms
• Professional and semi-professional circuit drivers requiring FIA 8859-2024 certification
• Drivers who want maximum weight saving in a GT-configured helmet
• NZ and AU competitors requiring MSNZ or Motorsport Australia compliant helmets

How Does It Compare?

Key Features

• FIA 8859-2024 certified
• Ultra-lightweight carbon fibre shell
• Integrated radio electronics — adjustable dynamic noise-cancelling microphone and built-in radio connection port
• In-ear speaker connection with integral wiring and connector
• Advanced ventilation — chin bar and top shell channels
• Wider aperture for improved downward visibility
• Removable sun visor — additional short visors available separately
• Drinks system ready
• Factory-fitted FHR / HANS posts included

Earbuds vs Earmuffs — Which Should You Choose?

Select the audio connector that matches your intercom system and racing environment.

• EarMuff / Speakers — Large padded ear cups with built-in speakers that sit over the ear. Best for noisy environments such as Circuit, rally, speedway, drifting, and off-road racing where ambient noise is high. Provides passive noise isolation alongside clear audio. The most popular choice for Rally Intercom and Radio use in loud cockpits.
• Stilo Earbud Connector — Stilo’s own proprietary push-lock connector, exclusive to Stilo helmets. Not compatible with third-party Earpieces and earbuds without an adapter.
• 3.5mm Mono Connector — The most widely used audio connector in New Zealand, Australia, and the USA. Compatible with the majority of aftermarket Earpieces and earbuds, and radio setups in these markets. The go-to choice if you’re running a non-Stilo Custom Earpiece or upgrading from an existing system.
• RCA Connector — Predominantly used in European Race Teams and systems. Check the audio input type — RCA is the standard connection in many European-market race communication systems.

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

Frequently Asked Questions

Is the ST6 GTN Carbon legal for MSNZ and Motorsport Australia GT events?

Yes. The ST6 GTN Carbon is FIA 8859-2024 certified, accepted by both Motorsport New Zealand and Motorsport Australia. Always check your specific class regulations.

Does this helmet include HANS posts?

Yes — factory-fitted FHR / HANS posts are included as standard.

Can I use this helmet with my existing intercom system?

Yes, in most cases. The ST6 GTN Carbon includes Stilo’s proprietary connector. If your intercom uses a 3.5mm mono or RCA connection, an adapter is required. Contact Harris Race Radios to confirm compatibility.

What is the difference between the ST6 GTN Carbon and the ST6 GTN 8860 Carbon?

Both are GT carbon helmets with HANS posts. The GTN 8860 Carbon carries the elite FIA 8860-2018 certification, the highest standard available. The GTN Carbon is FIA 8859-2024 certified, suitable for all national and international GT events.

How do I choose the right size?

Measure the widest circumference of your head above the ears. When in doubt, size down. We offer bespoke in-store fitting at Harris Race Radios.

Homologation

FIA 8859-2024 certified. For full technical specifications visit stilo.com.

Sizing

Available XS through XXXL. Measure the widest part of your head above the ears. When in doubt, size down. Contact us to check stock availability.

Harris Race Radios is the Authorized Motorsport Helmet Dealer for New Zealand and Australia — radio engineers and motorsport communications specialists with over 50 years of experience in the industry since 1975. Trusted by competitors from club days through to professional championship events. All helmets are genuine, warranty-backed, and ship fast across NZ and AU.