Stilo ST5.1 GT Carbon Fiber Racing Helmet – Snell SA2020 / FIA 8859-2015
Huge savings on our remaining inventory of the iconic Stilo ST5.1 GT Carbon Fiber Racing Helmet! Experience professional racing helmet technology at an exceptional closeout value while remaining supplies last.
The Stilo ST5.1 GT Carbon Fiber Racing Helmet combines lightweight carbon fiber construction, outstanding visibility, and innovative modular design in one of Stilo's most recognized motorsport helmets. Developed for competitive drivers who demand superior comfort, integrated accessory compatibility, and professional protection, the ST5.1 GT Carbon remains an excellent choice for serious track enthusiasts and racers.
Manufactured in Italy using advanced autoclave-molded carbon fiber construction, the ST5.1 GT Carbon provides exceptional strength-to-weight performance while reducing unnecessary helmet mass. Its refined aerodynamic profile, expanded eyeport, and premium noise-attenuating interior deliver the comfort and visibility needed during demanding track sessions.
Certified to Snell SA2020 and FIA 8859-2015 , the ST5.1 GT Carbon features integrated side ports for optional communications, forced-air cooling, and hydration systems. A clear 3mm anti-fog shield, removable comfort padding, and pre-installed M6 threaded inserts for compatible head and neck restraint anchors complete this versatile racing helmet.
VIDEO Stilo ST5.1 GT Carbon Helmet Key Features
Snell SA2020 and FIA 8859-2015 Certified: Meets established motorsport helmet safety standards for qualifying competition and track applications.
Autoclave-Molded Carbon Fiber Shell: Lightweight carbon construction engineered for strength, impact protection, and driver comfort.
Lightweight Racing Design: Approximately 2.99 lbs in the small shell and 3.32 lbs in the large shell, depending on configuration.
Enlarged Eyeport: Improved visibility compared with previous Stilo ST4 helmet designs.
Integrated Side Accessory Ports: Accommodates compatible communication, forced-air cooling, and hydration accessories.
Clear 3mm Anti-Fog Shield: Factory-supplied shield designed to maintain clear visibility during demanding racing conditions.
Multi-Function Shield Lock: Center-mounted locking system designed for convenient operation while wearing racing gloves.
Noise-Attenuating Ear Cups: Removable earmuff cushions help reduce unwanted cockpit noise.
Removable Comfort Padding: Replaceable cheek and crown padding provides fit customization and easier maintenance.
Pre-Installed M6 Threaded Inserts: Ready for installation of compatible FHR/HANS anchor hardware, sold separately.
Two Shell Sizes: Optimized shell construction helps provide a more compact fit and reduced unnecessary weight.
ST5 Accessory Compatibility: Compatible with selected Stilo ST5 shields, aerodynamic accessories, air kits, and communication systems.
Made in Italy: Manufactured and assembled using Stilo's professional motorsport construction techniques.
Lightweight Autoclave-Molded Carbon Fiber Construction
The Stilo ST5.1 GT Carbon uses advanced carbon fiber construction developed to deliver professional-grade strength while minimizing helmet weight.
Its autoclave-molded shell offers an excellent balance of structural integrity, impact performance, and lightweight comfort.
Reducing the weight supported by the driver's head and neck can improve comfort during extended driving sessions, particularly under repeated cornering, braking, and acceleration forces.
Stilo developed the ST5 GT Carbon with two shell sizes, allowing smaller helmet sizes to use a more compact shell rather than unnecessary padding inside an oversized design.
The natural carbon fiber finish showcases the helmet's premium construction while maintaining a distinctive professional racing appearance.
Expanded Eyeport for Superior Racing Visibility
The Stilo ST5.1 GT Carbon features an enlarged eyeport designed to improve visibility compared with the previous ST4 helmet generation.
The taller opening provides additional peripheral and downward vision, helping drivers remain aware of mirrors, surrounding traffic, corner workers, and cockpit controls.
The generous eyeport design can also be beneficial for drivers who wear prescription glasses, subject to individual fit.
Combined with the clear 3mm shield, the ST5.1 GT Carbon is designed to provide clear sightlines during sprint races, endurance events, club competition, and high-performance driving.
Integrated Communication, Hydration, and Forced-Air Ports
One of the most distinctive features of the Stilo ST5.1 GT Carbon is its modular accessory system.
The helmet incorporates integrated side ports that allow drivers to install a variety of compatible motorsport accessories without compromising the streamlined shell design.
Available configurations include:
Racing Communications: Compatible Stilo microphone, earplug, and radio communication accessories.
Forced-Air Cooling: Optional air intake systems designed to provide additional airflow during hot racing conditions.
Driver Hydration: Compatible drinking tubes and hydration connections for extended racing sessions.
Helmet Eject Compatibility: Provisions for compatible helmet removal assistance equipment, where applicable.
Aerodynamic Accessories: Compatible Stilo spoilers and aerodynamic components for specific racing applications.
When optional accessories are not installed, the helmet maintains a clean and streamlined appearance.
Communication systems, forced-air kits, hydration equipment, and other accessories are sold separately.
Clear 3mm Anti-Fog Shield and Center Locking System
The Stilo ST5.1 GT Carbon comes equipped with a clear 3mm shield featuring an anti-fog treatment designed to help maintain visibility during changing cockpit temperatures and racing conditions.
The helmet uses Stilo's multi-function center shield locking system, allowing drivers to operate the shield while wearing racing gloves.
Compatible Stilo ST5 replacement shields are available in different colors and tint options, providing additional flexibility for different lighting conditions.
Optional aerodynamic shield accessories and replacement hardware are also available for compatible ST5 configurations.
Noise-Attenuating Ear Cups for Racing Communications
Excessive cockpit noise can make communication difficult during competitive racing.
The Stilo ST5.1 GT Carbon incorporates removable noise-attenuating earmuff cushions designed to reduce sound around the driver's ears.
This feature improves comfort and provides an effective foundation for compatible in-ear communication systems.
With optional Stilo electronics installed, drivers can configure the helmet for communication with pit crews and race engineers without exposed wiring interfering with their driving position.
The earmuff cushions can also be removed or adjusted to accommodate individual comfort preferences.
Premium Interior Comfort and Customizable Fit
The ST5.1 GT Carbon features a comfortable fire-resistant interior designed for demanding motorsport environments.
Removable cheek and crown padding allow drivers to customize helmet fit using compatible Stilo replacement components.
Its intermediate oval fit profile is designed to accommodate a variety of head shapes while providing secure contact around the head.
The helmet should fit firmly and evenly without excessive pressure points or unwanted movement.
For drivers moving from another helmet brand, proper measurement and fitting are recommended before competition.
FHR and HANS Anchor Compatibility
The Stilo ST5.1 GT Carbon incorporates pre-installed M6 threaded inserts designed for installation of compatible frontal head restraint anchor hardware.
These threaded mounting points allow drivers to configure the helmet for use with compatible HANS and FHR devices.
Important: HANS/FHR post anchors are not included as standard equipment with this helmet and must be purchased separately unless specifically included in a product bundle.
Use only compatible approved anchor hardware and follow the appropriate installation instructions.
Stilo ST5.1 GT Carbon Helmet Weight and Shell Construction
Stilo's lightweight construction is one of the defining advantages of the ST5 GT Carbon platform.
Small Shell: Approximately 2.99 lbs (1,360 g)
Large Shell: Approximately 3.32 lbs (1,505 g)
Shell Material: Carbon Fiber
Shell Construction: Autoclave-Molded
Shell Sizes: Two
Actual weight may vary depending on helmet size, production revision, and installed accessories.
Stilo ST5.1 GT Carbon Technical Specifications
Manufacturer: Stilo Helmets
Model: ST5.1 GT Carbon
Helmet Family: ST5 GT
Helmet Type: Full-Face Racing Helmet
Snell Certification: SA2020
FIA Homologation: FIA 8859-2015
Shell Material: Carbon Fiber
Shell Construction: Autoclave-Molded Carbon
Finish: Natural Carbon Fiber
Fit Profile: Intermediate Oval
Shell Sizes: Small and Large
Approximate Small Shell Weight: 2.99 lbs
Approximate Large Shell Weight: 3.32 lbs
Shield: Clear 3mm Anti-Fog
Shield Mechanism: Center Multi-Function Lock
Compatible Shields: Stilo ST5 Series
Interior: Fire-Resistant Comfort Fabric
Removable Cheek Pads: Yes
Replaceable Crown Padding: Yes, Compatible Components Available
Noise-Attenuating Ear Cups: Included
Communication Ready: Yes, Optional Accessories Required
Hydration Compatible: Yes, Optional Accessories Required
Forced-Air Compatible: Yes, Optional Accessories Required
FHR Mounting: Pre-Installed M6 Threaded Inserts
HANS Post Anchors: Sold Separately
Helmet Bag: Included
Country of Manufacture: Italy
Primary Application: Road Racing, GT Racing, HPDE, Time Attack, and Endurance Racing
Quantity: Sold Individually
Stilo ST5.1 GT Carbon Helmet Compatibility
The ST5.1 GT Carbon is compatible with a wide range of accessories developed for the Stilo ST5 helmet platform.
Available accessory categories include:
Stilo ST5 replacement shields and tinted visors
Compatible Stilo communication and radio systems
Stilo forced-air cooling kits
Compatible driver hydration systems
Stilo aerodynamic accessories
Compatible cheek pads and interior fit components
Approved M6 FHR anchor hardware
Always verify accessory compatibility with the specific ST5 GT Carbon helmet configuration before purchasing.
Stilo ST5.1 GT Carbon Racing Helmet Sizing Chart
Stilo ST5.1 GT Carbon Helmet Care and Maintenance
Proper care and maintenance help preserve the performance, comfort, and appearance of your Stilo racing helmet.
Exterior Care: Clean the carbon fiber shell using a soft microfiber cloth and helmet-safe cleaning products. Avoid abrasive cleaners, harsh solvents, and excessive heat.
Shield Care: Clean the anti-fog shield using approved non-abrasive products. Avoid cleaners that could damage the anti-fog treatment.
Interior Care: Clean removable padding according to Stilo's care instructions. Allow all components to dry completely before reinstallation.
Accessory Ports: Inspect communication connectors, air ports, and hydration connections regularly. Keep ports protected when optional accessories are not installed.
Storage: Store the helmet in a cool, dry location away from direct sunlight and chemical exposure. Inspect the helmet and restraint hardware before every racing event.
Stilo ST5.1 GT Carbon Racing Helmet FAQs
Is the Stilo ST5.1 GT Carbon Snell SA2020 certified?
Is the Stilo ST5.1 GT Carbon FIA approved?
Is the ST5.1 GT Carbon made from real carbon fiber?
How much does the Stilo ST5.1 GT Carbon weigh?
Does the helmet include HANS anchors?
Does the ST5.1 GT Carbon come with an anti-fog shield?
Can I install a radio communication system?
Can I add a forced-air helmet cooling system?
Can I install a driver hydration system?
Are the cheek pads removable?
Does the ST5.1 GT Carbon help reduce cockpit noise?
Will ST5 shields fit the ST5.1 GT Carbon?
What is the difference between the ST5.1 GT Carbon and ST5.1 GT Composite?
How does the ST5.1 GT Carbon compare with the newer ST6?
Is the ST5.1 GT Carbon suitable for endurance racing?
Closeout Savings on the Stilo ST5.1 GT Carbon
Take advantage of outstanding savings on our remaining inventory of the Stilo ST5.1 GT Carbon Fiber Racing Helmet .
With professional carbon fiber construction, Snell SA2020 and FIA 8859-2015 certification, a clear anti-fog shield, and extensive ST5 accessory compatibility, this helmet continues to offer exceptional performance for serious racers.
Limited remaining inventory. Available sizes and quantities may be restricted.
Shipping Notice: Signature required upon delivery.
Other Versions
If you prefer a fiberglass shell, see the Stilo ST5.1 GT Composite Helmet .
If your racing series requires FIA 8860 certification, see the Stilo ST5 GT 8860-2018 Carbon Helmet .
Signature Required: This helmet ships with signature confirmation upon delivery.
