Stilo ST6 F Composite Helmet SA2020 Final Lap

The Stilo ST6 F Composite Helmet is the composite shell option in the ST6 circuit racing range, dual certified to FIA 8859-2015 and Snell SA2020, with integrated Stilo electronics, advanced ventilation, and a lightweight composite shell. Up to 11% lighter than the previous ST5 F Composite, it delivers the latest safety certification at a lower price point than the carbon shell. If you're competing in circuit racing, hillclimb, or any FIA-sanctioned series in NZ or Australia, check it against your series rules.

Looking for the carbon shell? See the ST6 F Carbon, same FIA 8859-2024 and SA2025 certification, ultra-lightweight PURO carbon fibre shell for maximum weight saving. For GT and endurance racing with sun visor, see the ST6 GT Composite.

Suitable for:

• Circuit racing: club and national level competition
• Endurance racing: suitable for shorter endurance formats; see the ST6 GT Composite for longer endurance events with sun visor
• GT racing: FIA-sanctioned GT class events
• Hillclimb: speed events requiring FIA-approved motorsport safety equipment
• Time attack and track day events requiring a competition-grade racing helmet
• Motorsport Australia (CAMS) sanctioned events
• Motorsport New Zealand (MSNZ) sanctioned events

The ST6 F Composite combines the latest FIA and Snell safety standards, integrated Stilo communications electronics, and a lightweight composite shell, giving you a competition-grade circuit helmet at a lower price than the carbon shell.

Technical Specifications

Shell: Lightweight Composite

The ST6 F Composite uses a lightweight composite shell. Three distinct shell sizes cover the full size range (XS through XXXL), ensuring the shell geometry is optimised for each head size rather than stretching a single shell across all sizes.

Why it matters: A properly sized shell improves both comfort and protection. The composite construction meets the full structural requirements of FIA 8859-2015 at a lower price point than carbon, making it the right choice for competitors who want the latest certification without the carbon premium.

Weight

From approximately 1,420 g (small shell, shell size dependent). Up to 11% lighter than the previous ST5 F Composite. Larger shell sizes will be marginally heavier.

Why it matters: In a high-G cornering environment, a heavier helmet amplifies the load on the neck and cervical spine. Lighter helmets reduce fatigue and improve comfort over race distance. The ST6 F Composite delivers meaningful weight savings over its predecessor.

Certifications: FIA 8859-2015 & Snell SA2020 (Dual Homologated)

Ventilation

Six chin bar vents plus crown vents and padding channels for maximum airflow. Special channels in the padding enhance airflow through the helmet interior, keeping you cooler and reducing fatigue over long race events.

Integrated Radio Electronics

Adjustable dynamic noise-cancelling microphone and built-in radio connection port for clear, uninterrupted crew communication. In-ear speaker connection with integral wiring and connector for seamless integration of in-ear speakers.

Visor

High-performance anti-fog visor with permanent washable treatment, refined pivot for smoother operation, and one-hand locking mechanism. Meets FIA 8859-2024 in both fully closed and ventilated positions. Wider aperture for improved downward visibility of dashboard and cockpit controls.

Additional Features

Updated cheek padding with customisable thickness options (available separately) for a tailored fit. FHR posts factory fitted. Drinks system ready, prepared for hydration tube integration. Compatible with optional Stilo Top Air System.

Sizes Available

XS (54), S (55), M (57), L (58), L (59), XL (61), XXL (63), XXXL (64). Available in Gunmetal Gray and White. 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 Connector: How It Works

The ST6 F 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 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.

Frequently Asked Questions

What is the difference between the ST6 F and ST6 FN?
The ST6 F comes with factory Stilo integrated electronics. Harris Race Radios fits your chosen audio connector before dispatch. The ST6 FN is a naked shell. Harris Race Radios fits your preferred aftermarket or team-spec intercom system directly to the shell.

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.

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.

Is the ST6 F Composite legal for Motorsport Australia (CAMS) events?
It holds FIA 8859-2015 homologation. Check the physical label and your category and event rules before you buy.

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

Is the ST6 F Composite HANS compatible?
Yes, the ST6 F Composite has factory-fitted FHR posts and is fully compatible with HANS and FHR devices. Whether a HANS or FHR device is mandatory for your series depends on your specific regulations.

Can I fit custom ear moulds to the ST6 F Composite?
Yes, the ST6 F Composite is compatible with custom-moulded in-ear monitors and earpieces when fitted with the appropriate connector (3.5mm Mono is the most common for custom earpiece compatibility in NZ and Australia). Contact Aaron Harris for advice on matching your earpiece to the correct connector for your setup.

Is the ST6 F Composite suitable for endurance racing?
Yes, the ST6 F Composite is suitable for endurance racing. For longer endurance formats where a sun visor is beneficial, consider the ST6 GT Composite which adds a removable sun visor specifically for GT and endurance racing use.

What is the expected service life of a racing helmet?
FIA-homologated racing helmets have a competition life determined by their homologation period, typically 10 years from the date of manufacture for FIA 8859-2024 helmets in most series, though some categories apply shorter limits. The expiry date is printed on the helmet label. Always check your specific series regulations and the helmet label. Contact Aaron Harris, MSNZ Licence Examiner, if you need clarification on service life or homologation validity for your category.

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.