Stilo ST6 F Offshore Helmet

The Stilo ST6 F Offshore Helmet is purpose-built for offshore and powerboat racing — combining a high-visibility orange composite shell certified to FIA 8859-2024 and Snell SA2025 with Stilo’s integrated radio electronics and dynamic noise-cancelling microphone. Up to 11% lighter than the previous ST5 F Offshore, it delivers superior impact protection and clear crew communications across demanding open-water race environments.

Key Benefits

• High-visibility orange — maximum visibility in offshore and open-water environments for safety and rescue identification
• Dual certified — FIA 8859-2024 and Snell SA2025 for the highest current protection standard
• Up to 11% lighter than the previous ST5 F Offshore, from approximately 1230g
• Integrated radio electronics — dynamic noise-cancelling microphone and built-in radio connection for clear crew communication
• Advanced ventilation — six chin bar vents and crown vents for airflow during long offshore events
• Backed by 50+ years of expertise — fitted and supported by radio engineers and motorsport communications specialists since 1975

Who Is This Helmet For?

• Offshore and powerboat racing competitors requiring FIA or Snell certified head protection
• Drivers and co-drivers who need integrated radio communications in a high-visibility shell
• Competitors upgrading from an older ST5 F Offshore or equivalent
• NZ and AU offshore racing competitors requiring MSNZ or Motorsport Australia compliant helmets

How Does It Compare?

Key Features

• FIA 8859-2024 & Snell SA2025 certified — dual homologation for offshore racing globally
• Composite shell — up to 11% lighter than ST5 F Offshore, from approx. 1230g (small shell)
• High-visibility orange finish — designed for offshore and water-based motorsport
• Six chin bar vents plus crown vents and padding channels for maximum airflow
• Integrated radio electronics — adjustable dynamic noise-cancelling microphone and built-in radio connection port
• In-ear speaker connection with integral wiring and connector
• High-performance anti-fog visor — washable treatment, smoother pivot, one-hand locking
• Wider aperture for improved downward visibility
• Drinks system ready — prepared for hydration tube integration
• Three shell sizes for a more precise fit
• FHR post receptacles fitted — FHR posts NOT included but easily retrofitted

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 F Offshore approved for offshore and powerboat racing in NZ and AU?

Yes. The ST6 F Offshore is FIA 8859-2024 and Snell SA2025 certified. Check your specific event or class regulations to confirm which standard is required.

Does this helmet include HANS posts?

FHR post receptacles are fitted to the shell but FHR posts are NOT included. They can be easily retrofitted — contact Harris Race Radios for options.

Can I use this helmet with my existing radio or intercom system?

Yes, in most cases. The ST6 F Offshore includes Stilo’s proprietary connector. If your system uses a 3.5mm mono or RCA connection, an adapter is required. Contact us to confirm compatibility.

How do I choose the right size?

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

Homologation

FIA 8859-2024 & Snell SA2025 certified. For full technical specifications visit stilo.com.

Sizing

Available XS through XXL. 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.