Stilo ST5 GT Composite Racing Helmet
Snell SA2020 / FIA 8859-2015
The Stilo ST5 GT Composite Racing Helmet combines lightweight fiberglass/Kevlar composite construction, exceptional visibility, and one of the most versatile integrated accessory systems in motorsports. Designed for GT racing, endurance competition, road racing, and performance driving, the ST5 GT delivers professional racing helmet technology with the flexibility to accommodate a wide range of driver equipment.
Certified to Snell SA2020 and FIA 8859-2015 , the Stilo ST5 GT Composite features an advanced Multi Sandwich Fiber (MSF) shell, an expansive eyeport, a clear anti-fog visor, noise-attenuating earmuffs, and integrated side ports for compatible communication, hydration, and ventilation accessories.
Its Intermediate Oval interior shape, removable comfort padding, and two-shell construction provide a secure, customizable fit. Whether preparing for sprint races, endurance events, or track days, the Stilo ST5 GT Composite offers an excellent combination of comfort, safety engineering, and versatility.
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Stilo ST5 GT Composite Racing Helmet Features
Snell SA2020 Certified: Meets the Snell SA2020 automotive racing helmet safety standard.
FIA 8859-2015 Homologated: Approved to the FIA 8859-2015 motorsport helmet standard.
Fiberglass/Kevlar Composite Shell: Multi Sandwich Fiber construction engineered for strength, impact management, and comfort.
Autoclave-Molded Construction: Advanced shell manufacturing process designed to deliver consistent structural performance.
Wide Eyeport: Expansive viewing area improves peripheral vision and cockpit awareness.
Clear Anti-Fog Visor: Includes a 3mm clear shield with an anti-fog treatment.
Central Visor Lock: Convenient center-mounted closure designed for operation while wearing racing gloves.
Integrated Side Accessory Ports: Accommodate compatible radio, hydration, and ventilation accessories.
Noise-Attenuating Earmuffs: Included removable earmuff cushions help reduce unwanted cockpit noise.
Removable Cheek and Crown Padding: Allows fit adjustments using compatible Stilo interior components.
Intermediate Oval Fit: Designed for a comfortable, secure fit across a variety of head shapes.
Two Shell Sizes: Small and large exterior shells reduce unnecessary bulk.
M6 FHR Terminals: Factory-installed threaded receivers accommodate approved HANS and head-and-neck-restraint anchors.
Optional Forced-Air Compatibility: Supports compatible Stilo air-cooling accessories.
Multiple Visor Options: Compatible with selected clear, tinted, mirrored, and iridium ST5 shields.
Made in Italy: Manufactured and assembled using Stilo's motorsport helmet production processes.
Lightweight Fiberglass/Kevlar Multi Sandwich Fiber Shell
The Stilo ST5 GT Composite features an advanced Fiberglass/Kevlar Multi Sandwich Fiber (MSF) shell designed to balance structural strength, impact-energy management, and helmet weight.
Its composite shell construction uses multiple reinforcing materials arranged to provide the protective performance required by Snell SA2020 and FIA 8859-2015.
Stilo manufactures the composite shell using an autoclave molding process designed to deliver consistent construction and strength throughout the helmet.
The ST5 GT Composite offers a premium alternative to conventional fiberglass racing helmets while maintaining a comfortable, manageable weight for extended driving sessions.
Snell SA2020 and FIA 8859-2015 Racing Certification
The Stilo ST5 GT Composite carries two recognized automotive motorsport safety certifications:
Snell SA2020: Automotive racing helmet certification addressing impact performance and other motorsport-specific safety requirements.
FIA 8859-2015: FIA homologation for racing helmets used in approved motorsport applications.
These certifications make the ST5 GT Composite suitable for numerous road racing, club racing, track-day, and endurance racing applications where the relevant standards remain accepted.
Important: FIA 8859-2015 is not the same as FIA 8860-2018. Racing organizations establish their own accepted certification standards and expiration requirements. Always verify helmet eligibility before competition.
Large Eyeport for Exceptional Driver Visibility
Visibility is one of the defining characteristics of the Stilo ST5 GT Composite.
Its generous eyeport design provides excellent peripheral vision, allowing drivers to maintain greater awareness of mirrors, approaching competitors, dashboard instruments, and cockpit surroundings.
The expanded opening is particularly valuable for GT and endurance racing, where situational awareness is essential when navigating traffic and monitoring vehicle information.
The helmet's eyeport design also supports Stilo's extensive selection of replacement visors and optical accessories.
3mm Clear Anti-Fog Racing Visor
The ST5 GT Composite includes a 3mm clear visor with anti-fog treatment designed to help maintain visibility in changing cockpit conditions.
Stilo's central visor locking mechanism provides an accessible closure point that can be operated while wearing racing gloves.
The ST5 visor platform supports multiple optional shield finishes, allowing drivers to tailor their setup for different lighting conditions.
Compatible options may include clear, smoke, mirrored, and iridium finishes, depending on availability.
Explore the Stilo ST5 and ST5.1 Replacement Helmet Shields for additional options.
Integrated Side Ports for Maximum Customization
One of the ST5 GT Composite's most distinctive features is its integrated side accessory port system .
Unlike conventional racing helmets that may require external accessory mounting arrangements, Stilo designed the ST5 shell with dedicated side ports that accommodate compatible components while maintaining a clean helmet profile.
Depending on the selected installation, the helmet can accommodate:
Integrated communication electronics
Compatible microphones and speakers
Radio and intercom connection systems
Driver hydration equipment and drinking tubes
Side-air ventilation accessories
Compatible air-cooling systems
This modular configuration makes the ST5 GT particularly useful for endurance racing teams and drivers who need to customize their helmets for different vehicles.
Communication electronics, hydration systems, air accessories, and other optional equipment are sold separately unless specifically included in the selected configuration.
Noise-Attenuating Earmuffs for GT and Endurance Racing
The Stilo ST5 GT Composite includes removable noise-attenuating earmuff cushions designed to reduce unwanted sound inside noisy competition vehicles.
By creating additional isolation around the ears, these cushions can help improve driver comfort during extended racing sessions.
They also provide a useful foundation for compatible integrated communication systems, allowing microphone and speaker equipment to be installed according to driver preference.
For endurance racers, effective sound management can make radio communication easier to understand during long stints.
Removable Cheek Pads and Adjustable Interior Fit
Proper helmet fit is essential for protective performance, comfort, and stability.
The ST5 GT Composite incorporates removable cheek and crown comfort padding, allowing compatible interior components to be exchanged when appropriate.
This flexibility enables drivers to fine-tune the helmet's fit without compromising the integrity of the protective shell.
The black Nomex interior provides fire-resistant materials suitable for automotive motorsport applications.
Stilo's Intermediate Oval interior shape is designed to provide secure contact around the head while accommodating a broad range of drivers.
Replacement pads must be selected specifically for the ST5 helmet platform and installed according to manufacturer recommendations.
Two Shell Sizes for Reduced Weight and Bulk
The Stilo ST5 GT Composite uses two exterior shell sizes to provide more proportional helmet dimensions across its available size range.
The smaller shell accommodates helmet sizes 54, 55, 57, and 59, while the larger shell accommodates sizes 60, 61, 63, and 64.
This approach helps reduce unnecessary exterior material around smaller head sizes while providing adequate interior dimensions for larger drivers.
The transition between the small and large shell occurs at size 60, making it particularly important to evaluate fit when selecting between sizes 59 and 60.
M6 HANS and FHR Anchor Compatibility
The Stilo ST5 GT Composite includes factory-installed M6 threaded mounting receivers designed for approved Frontal Head Restraint hardware.
These threaded mounting points allow compatible HANS and other FHR anchor posts to be installed without modifying the helmet shell.
Important: M6 threaded receivers are included, but HANS/FHR anchor posts are sold separately unless specified in the selected package.
Always use approved anchor hardware and follow the installation requirements of the helmet and head-and-neck-restraint manufacturers.
Optional Forced-Air Cooling and Hydration Systems
For drivers competing in hot environments or extended endurance races, the ST5 GT Composite can be configured with compatible Stilo ventilation and hydration accessories.
Available configurations include selected side-air and top-air systems that can help introduce external cooling air into the helmet.
Hydration accessories allow compatible drinking tubes to be routed through the helmet's integrated accessory system.
The helmet's modular design helps keep these systems organized while reducing interference with the driver's comfort padding and cockpit equipment.
Air-cooling hardware, hydration components, and external cooling equipment are available separately.
Stilo ST5 GT Composite Helmet Specifications
Manufacturer: Stilo
Model: ST5 GT Composite
Helmet Type: Full-face automotive racing helmet
Snell Certification: SA2020
FIA Homologation: FIA 8859-2015
Shell Material: Fiberglass/Kevlar Multi Sandwich Fiber
Shell Construction: Autoclave-molded composite
Exterior Shell Sizes: Two
Fit Profile: Intermediate Oval
Interior: Black Nomex
Comfort Padding: Removable cheek and crown pads
Earmuffs: Removable noise-attenuating cushions included
Included Shield: 3mm clear anti-fog visor
Visor System: Central locking mechanism
Compatible Shields: Stilo ST5 and ST5.1
FHR Mounting: Factory-installed M6 threaded receivers
FHR Anchor Posts: Sold separately
Accessory Ports: Integrated side-mounted system
Communication System: Optional
Hydration System: Optional
Forced-Air Compatibility: Yes, with compatible accessories
Chin Strap: Double D-ring
Helmet Bag: Included
Available Finishes: Silver, Matte Black, White
Manufacturer Country: Italy
Stilo ST5 GT Composite Sizing Chart
Stilo ST5 GT Composite Available Colors
The ST5 GT Composite is offered in three traditional racing finishes:
Silver: Metallic motorsport appearance with a premium gloss finish.
Matte Black: Subtle, understated styling with a non-gloss exterior.
White: Classic racing helmet appearance suitable for a wide range of driver equipment.
Color and size availability may vary by remaining manufacturer inventory.
Stilo ST5 GT Composite vs. ST5 GT Carbon
The Stilo ST5 GT Composite and ST5 GT Carbon share the versatile ST5 platform, large eyeport, integrated accessory ports, and motorsport-focused design.
The primary difference is the outer shell construction.
ST5 GT Composite: Uses Stilo's fiberglass/Kevlar Multi Sandwich Fiber construction, providing a balance of performance, durability, and value.
ST5 GT Carbon: Uses a carbon fiber shell designed to reduce weight while preserving the ST5 platform's flexibility and accessory compatibility.
Both versions are intended for drivers who value integrated equipment options and a customizable GT racing helmet configuration.
Ideal Applications for the Stilo ST5 GT Composite
The ST5 GT Composite is designed for a wide range of automotive motorsport applications:
GT Racing: Wide eyeport, noise-attenuating earmuffs, and optional communication integration.
Endurance Racing: Compatible hydration, air-cooling, and radio accessory systems.
Club Racing: Full-face construction and recognized Snell and FIA certifications.
Track Days and HPDE: Comfortable, secure helmet design for performance driving.
Touring Car Racing: Wide field of vision and modular communication options.
Time Trials: Lightweight construction and supportive interior fit.
Sprint Racing: Professional motorsport helmet features for competitive driving sessions.
Always confirm that the helmet's Snell SA2020 and FIA 8859-2015 certifications remain accepted by your racing organization.
Stilo ST5 GT Composite Frequently Asked Questions
What certifications does the Stilo ST5 GT Composite have?
The ST5 GT Composite carries Snell SA2020 and FIA 8859-2015 certifications. Confirm that these standards are accepted for your intended racing application.
Is the Stilo ST5 GT Composite made from carbon fiber?
The ST5 GT Composite uses a fiberglass/Kevlar Multi Sandwich Fiber shell. The ST5 GT Carbon is a separate model featuring carbon fiber construction.
Does the Stilo ST5 GT Composite include HANS anchors?
The helmet includes factory-installed M6 threaded receivers, but compatible HANS/FHR anchor posts are sold separately.
Does the ST5 GT Composite come with a visor?
Yes. A clear 3mm anti-fog visor is included.
Can I install tinted or mirrored shields?
Yes. Compatible Stilo ST5 and ST5.1 replacement shields are available in several optional finishes.
Does the ST5 GT include built-in communications?
The standard helmet includes accessory ports and removable earmuffs. Radio electronics, microphones, speakers, and compatible communication kits are available separately.
Can I install a hydration system?
Yes. The integrated side accessory ports support compatible Stilo hydration components.
Can the ST5 GT Composite use a forced-air cooling system?
Yes. Compatible side-air and top-air accessories allow integration with selected external cooling systems.
Are the cheek pads removable?
Yes. The comfort cheek pads can be removed or replaced with compatible Stilo components.
Does the helmet include noise-attenuating earmuffs?
Yes. Removable earmuff cushions are included to help reduce unwanted cockpit noise.
What is the head shape of the ST5 GT Composite?
The helmet has an Intermediate Oval interior profile. Proper fit should be confirmed by measuring and trying on the helmet.
How many shell sizes does the ST5 GT Composite have?
The helmet uses two exterior shell sizes. The smaller shell accommodates sizes 54 through 59, while the larger shell accommodates sizes 60 through 64 in the manufacturer's listed size options.
Can I use ST5 replacement visors on an ST5.1 helmet?
Stilo lists ST5 and ST5.1 visor compatibility for the corresponding shield family. Always verify the specific visor part number before ordering.
Does the Stilo ST5 GT Composite include a helmet bag?
Yes. A helmet bag is included with the standard helmet package.
What is the difference between the ST5 GT Composite and ST5 GT Carbon?
The Composite version uses fiberglass/Kevlar construction, while the Carbon model uses carbon fiber construction. Both share the modular ST5 GT design and compatible accessory systems.
Is the Stilo ST5 GT Composite suitable for endurance racing?
Yes. Its modular communication, hydration, and cooling compatibility make it well suited to endurance racing where the helmet's certification is accepted.
Why Choose the Stilo ST5 GT Composite Racing Helmet?
The Stilo ST5 GT Composite Snell SA2020 Racing Helmet delivers an outstanding combination of protective construction, comfortable interior design, excellent visibility, and integrated accessory versatility.
From track-day driving to competitive endurance racing, its fiberglass/Kevlar composite shell, noise-attenuating earmuffs, wide eyeport, and modular side ports provide a configurable platform for drivers with a wide variety of racing requirements.
Choose the ST5 GT Composite for proven Stilo engineering, professional motorsport performance, and the flexibility to build a helmet setup around your driving needs.
