Stilo ST5.1 GT Carbon Fiber Helmet SA2020 1 "a"



Stilo ST5.1 GT Carbon Fiber Helmet SA2020



Price Including Options:

Helmet Shape and Fit

Stilo ST5.1 GT Carbon SA2020 Helmet

Discover the Helmet That’s as Rad as Your Ride: The Stilo ST5.1 GT Carbon Fiber Helmet SA2020!

Looking for a helmet that’s not just a safety accessory, but a style statement too? Meet the Stilo ST5.1 GT Carbon Fiber Helmet SA2020. Because when you’re setting lap records at the track, shouldn’t your helmet game be just as strong as your racing game?

Why the Stilo ST5.1 GT Carbon Helmet is the Real MVP:




  1. Strength on Fleek: Made with an autoclave molded carbon fiber shell, this helmet gives you Hulk-like strength but with the weight of Ant-Man. Oh, and did we mention it’s tougher than fiberglass and other composites? ‘Cause it totally is.

  2. See the World... or Just the Track: With its sizeable eyeport, this helmet offers peripheral vision that’s off the charts. And for those sunny track days? Choose from tinted, mirrored, or iridium-colored visors (sold separately, folks) that are as easy to open and close as popping open a can of your favorite drink.

  3. Safety First, Second, and Always: While it boasts of its Snell SA2020 certification (major bragging rights there), it hasn’t forgotten its FIA 8858-2015 roots. Basically, it's the cool kid that’s welcome at almost every racing party.

  4. The Swiss Army Knife of Helmets: With ports for communications, forced air, and hydration, the Stilo ST5.1 GT is a multitasker's dream. And thanks to its design genius, all these features blend seamlessly, keeping you focused on the road.

  5. Get the Perfect Fit: Trust us, size matters. So get your head measured correctly (maybe turn it into a fun evening activity?). And if you’re teetering between sizes, might we suggest going a size up? After all, comfort is king.


Specifications to Make You Swoon:


  • Noise attenuating earmuffs to ensure your ears are blissfully ignorant of the outside world.
  • Ports ready for whatever you throw at it—be it communications, forced air, or hydration.
  • SA2020 Snell certification because protection is our middle name.
  • Compatibility is key: All existing Stilo ST5 shields and other nifty Stilo accessories play nice with the new ST5.1 SA2020 helmets.



Picture this: The roar of the engine, the wind against your face, and the rush of the race, all while the Stilo ST5.1 GT Carbon Fiber Helmet snugly embraces your noggin. It's not just a helmet; it's an experience.

Ready to Upgrade Your Helmet Game?  The track won't know what hit it. Grab the Stilo ST5.1 GT Carbon Fiber Helmet SA2020 and ride with style and safety. Click to buy NOW, and let's race to the future together!

The ST5.1 GT Carbon is Stilo's Snell SA2020-compliant version of their best-selling carbon helmet. With an autoclave molded carbon fiber shell, the ST5.1 GT Carbon offers strength superior to fiberglass and composites while minimizing weight.


With its large eyeport, the Stilo ST5.1 GT Carbon offers unsurpassed peripheral vision and all of the available tinted, mirrored, and iridium-colored visors (sold separately) have a center pinch-clip to make opening and closing easy, even while wearing nomex racing gloves.

Although updated to meet the newest Snell SA2020 certification, the Stilo ST5.1 GT Carbon retains its FIA 8858-2015 homologation as well. This makes the helmet legal for nearly all road race usage (except for those sanctioning bodies requiring FIA 8860 homologation).


The Stilo ST5.1 GT Composite is unsurpassed in built-in flexibility. Its two side ports can be fitted with three different types of integrated communication electronics, forced air, helmet eject system, or a hydration system. Thanks to its innovative shell design, mounting and routing these options to the ST5.1 GT is sleek and seamless. When not in use, you don't even know the features are there.

Whether you're using side-mounted communications, side air, or a built-in hydration kit for staying hydrated during long enduro stints, everything is neat, tidy and completely out of the way when not needed. Stilo offers simply the best modular racing helmet on the market.

Industry-standard M6 threaded receivers are molded into the helmet shell to accommodate anchors for whichever head-and-neck restraint you use. Size Note: We have found that customers who typically wear a size 59 helmet are most comfortable in size 60, which uses the large shell. Please order accordingly.

To get the most accurate measurement please have an assistant use a fabric measuring tape or a piece of string to measure the circumference of your head starting at a point approximately one inch above your eyebrows in front, around a point in the back of your head that results in the largest possible measurement, and finally wrapping back to the front.  It is a good idea to take several  measurements to make sure you have the largest one.


  • Noise attenuating earmuffs to reduce exterior noise

  • Ports for integrated communications, forced air, or hydration

  • SA2020 Snell certification offers increased protection

  • All existing Stilo ST5 shields and other Stilo accessories work on new ST5.1 SA2020 helmets


For the composite version, see the Stilo Helmets ST5.1 GT Composite Helmet.  For the FIA 8860-2018 version, see the Stilo Helmets ST5 GT 8860-2018 Carbon Helmet.

How to find the correct size for your new Stilo Helmet

Stilo ST5.1 GT Carbon Fiber Helmet SA2020 Size Chart Image

The Stilo ST5 GT Carbon fiber auto racing helmet will ship to you with signature required for delivery.


Remember that safety is paramount in auto racing, and choosing the right helmet and maintaining it properly is essential for your protection on the track. Always consult with the professionals at Discovery Parts and refer to the manufacturer's guidelines for specific questions about your racing helmet.

  1. Why do I need a racing helmet?

    Auto racing helmets are designed to protect drivers from head injuries and fire during high-speed races and crashes. They are a crucial safety component in motorsports.
  2. How do I choose the right size Stilo ST5 GT Carbon Fiber racing helmet? You should measure your head's circumference using a flexible tape measure, then refer to the manufacturer's sizing chart to select the appropriate size helmet. Please review our blog posting on how to properly fit your new auto racing helmet from Discovery Parts.
  3. What safety standards should I look for in a Stilo ST5 GT Carbon Fiber racing helmet? Look for helmets that meet safety standards like Snell and FIA depending on your racing discipline. These standards ensure the helmet's safety and quality. DOT helmets are designed for street use and not for racing and track use.
  4. What's the difference between full-face and open-face, and helmets? Full-face helmets provide the most protection with a complete face shield, while open-face helmets cover the top and sides of the head.
  5. Can I use a motorcycle helmet for auto racing? No, motorcycle helmets do not provide the same level of protection as auto racing helmets, as they are designed for different purposes. It's recommended to use a helmet specifically designed for auto racing which includes fire protection in addition to impact protection.
  6. How often should I replace my Stilo ST5 GT Carbon Fiber auto racing helmet? Auto racing helmets should be replaced every 5-10 years, depending on the manufacturer's recommendations and usage. If the helmet is involved in a crash, it should be replaced immediately.
  7. Are expensive racing helmets safer than budget ones? Safety standards dictate the minimum safety requirements, so even budget-friendly helmets can offer protection. However it’s important to consider how lower-priced helmets are meeting the required testing standards. More expensive helmets are lighter, smaller, are constructed of superior materials, and often come with additional features then less expensive helmets.
  8. How do I maintain and clean my Stilo ST5 GT Carbon Fiber racing helmet? Follow the manufacturer's instructions for cleaning and maintenance. You should clean the exterior, interior and shield with the Molecule Helmet Care Kit.
  9. Do I need to wear a balaclava under my Stilo ST5 GT Carbon Fiber racing racing helmet? Balaclavas are typically not required for Driver's Education events, however they make wearing a helmet much, much more comfortable. Balaclavas will provide fire protection (if fire rated), help keep your helmet lining clean and order free by absorbing the majority of sweat while using it, and additionally balaclavas make putting your helmet on and taking it off by protecting your ears and keeping from from folding over when you helmet is worn. Discovery Parts recommends balaclavas from Alpinestars, OMP, Sabelt, Sparco, and Stand21. If you are entering sanctioned auto racing events, balaclavas will be required for fire protection.
  10. Is the SNELL SA Rating important? The Snell SA2020 certification is a safety standard established by the Snell Memorial Foundation for auto racing helmets. It sets the criteria and requirements that helmets must meet to be considered safe and suitable for use in motorsport events. Snell SA2020 certification is highly regarded in the motorsports industry and is often required or recommended by racing organizations and events. It signifies that a helmet has passed rigorous testing to provide maximum safety for drivers in various motorsport disciplines, including road racing, NASCAR, Formula 1, drag racing, and more. It's essential for drivers to check the specific safety standards required by the racing organizations they participate in to ensure compliance.
  11. Is the FIA helmet certification important? Yes, FIA (Fédération Internationale de l'Automobile) certification is crucial for auto racing helmets, especially in the context of international motorsport events and many national and regional racing series in the USA. The FIA 8859-2015 standard is commonly associated with racing helmets used in various motorsport disciplines. Helmets certified to FIA 8859-2015 met the safety requirements set by the FIA and were widely accepted in many racing series
  12. Which helmet certification is the most stringent and the hardest to meet? The FIA 8860-2018 certification is considered the most stringent and advanced helmet certifications available for auto racing helmets, and it is often associated with top-tier motorsport categories like Formula 1. It's important to note that the FIA 8860-2018 helmets offer a high level of protection and their use is mandatory in many racing series. Drivers should always check the regulations of the racing series they intend to participate in to ensure compliance with helmet certification standards.
  13. Can I wear glasses with my Stilo ST5 GT Carbon Fiber racing helmet? Most helmets have provisions for wearing glasses or goggles, but check the design to be sure. Most manufacturers feature helmet models with wider eye ports to better accommodate eye glasses.
  14. Are carbon fiber helmets better? Carbon fiber helmets are lightweight and strong, a top choice for racers. But remember, certification matters most.
  15. Can I use a used helmet for racing? It's best to buy a new helmet. Used helmets may have unseen damage or be out of date on safety standards.
  16. Can I buy replacement parts for my Stilo ST5 GT Carbon Fiber racing helmet, like visors or padding? Many manufacturers offer replacement parts, including visors and padding, to extend your helmet's lifespan.
  17. How can I prevent helmet fogging during races? Anti-fog sprays and inserts are available to help keep your visor clear during races.
  18. What's the importance of proper helmet ventilation? Proper ventilation helps keep you cool and comfortable during races, reducing the risk of heat exhaustion.
  19. How do I store my Stilo ST5 GT Carbon Fiber racing helmet between races? Keep it in a cool, dry place away from direct sunlight and chemicals in a bag designed to store your auto racing helmet, like the Discovery Parts Evo Helmet Bag.
  20. Where can I buy a certified racing helmet? You should only buy from a professional authorized dealer who has sold thousands of helmets. You can find all the best brands at Discovery Parts online at or visit our retail store at Atlanta Motorsports park or at one of the hundreds of race and track day events we attend and support.

Remember, safety should always come first in auto racing. Choose a certified helmet that meets the necessary standards to protect yourself on the track.

We take immense pride in offering a wide selection of Stilo auto racing helmets, designed to meet the demands of professional racers and motorsports enthusiasts alike. Stilo has been at the forefront of helmet innovation and safety for decades, earning a reputation as a top-tier brand in the racing world.

Key Features of Stilo Racing Helmets:

  1. Unparalleled Safety: Stilo racing helmets are engineered to the highest safety standards, including certifications like Snell and DOT approval, ensuring your head is well-protected in high-speed racing conditions.
  2. Premium Materials: Crafted with precision, Stilo helmets feature carbon fiber construction, making them lightweight yet incredibly strong for maximum protection.
  3. Comfort and Fit: Stilo's commitment to comfort is evident in the design of their helmets. They offer a range of sizes, and many models have customizable padding to ensure a snug fit.
  4. Aerodynamic Design: Stilo helmets are designed with aerodynamics in mind, reducing wind resistance and enhancing performance on the track.

Frequently Asked Questions About Stilo Helmets:

  1. Where are Stilo helmets made? Stilo helmets are proudly manufactured in Italy, maintaining the highest quality standards.
  2. Is Stilo a good helmet brand? Yes, Stilo is renowned for its commitment to safety, innovation, and performance, making it a trusted choice among professional racers and enthusiasts.
  3. Are Stilo helmets Snell approved? Yes, many Stilo helmets are Snell approved, meeting rigorous safety standards.
  4. Are Stilo helmets FIA approved? Absolutely, several Stilo helmets are FIA 8860-2018 certified, ensuring they meet the most stringent safety requirements.
  5. Do Stilo helmets run small? Stilo offers a variety of sizes and often provides sizing charts to help you choose the right fit. It's important to measure your head and refer to their guidelines for a proper fit.

For racers who demand the best in safety and performance, Stilo auto racing helmets are the ultimate choice. Explore our extensive collection to find the perfect helmet for your racing needs.

Stilo Racing Helmets: Stilo Racing Helmets are renowned for their exceptional quality and safety features. With a wide range of models to choose from, you can find the perfect Stilo Racing Helmet to suit your racing needs.

Stilo Racing Helmet: Each Stilo Racing Helmet is a product of meticulous craftsmanship and cutting-edge technology. When you wear a Stilo Racing Helmet, you're choosing a helmet that prioritizes your safety and performance on the track.

Stilo Race Helmets: Stilo Race Helmets come in various styles and designs to cater to different types of motorsports. Whether you're into karting, open-wheel racing, or stock car racing, Stilo has race helmets tailored for your specific discipline.

Stilo Race Helmet: Your Stilo Race Helmet is more than just protective gear; it's a crucial part of your racing ensemble. The aerodynamic design of a Stilo  Race Helmet helps reduce wind resistance, giving you a competitive edge.

Stilo Helmet: A Stilo Helmet is a symbol of trust in motorsports. Professional racers and amateurs alike rely on the comfort, safety, and durability that Bell Helmets provide during intense racing conditions.

Stilo Helmets: Stilo Helmets have a rich history of innovation and excellence. The extensive range of Stilo Helmets ensures that there's a model suitable for every racer, whether you're a seasoned pro or just starting in the sport.

Stilo Carbon Fiber Helmet: Stilo Carbon Fiber Helmets combine the lightweight properties of carbon fiber with advanced safety features. These helmets are a top choice for racers seeking the ultimate in protection without sacrificing comfort.

Race Car Helmet: A race car helmet is a fundamental piece of safety gear for any racer. Stilo's race car helmets are engineered to meet the rigorous demands of motorsports, ensuring you stay safe on the track.

Racing Helmet: Your racing helmet is your shield against potential accidents. Stilo Racing Helmets are designed to offer superior impact protection while maintaining optimal visibility and ventilation.

Racing Helmets: Racing helmets are a racer's best friend. Stilo Racing Helmets, with their reputation for quality and safety, are the go-to choice for many professionals and enthusiasts in the racing community.

Stilo Racing: Stilo Racing is synonymous with excellence in the motorsports industry. Their commitment to research, development, and testing has solidified their position as a leader in racing helmet technology.

Auto Racing Helmet: When it comes to auto racing, your helmet is your first line of defense. Stilo Auto Racing Helmets are engineered to withstand the rigors of high-speed racing, ensuring your head is protected.

Auto Racing Helmets: Auto racing helmets from Stilo are designed to provide optimal head protection while maintaining lightweight and aerodynamic qualities, allowing you to perform at your best.

Customer Reviews

Based on 10 reviews
Tate E.
High Strength, Low Weight

The ST5.1 GT Carbon Helmet The Stilo ST5.1 GT Carbon Fiber Helmet impressed me with its strength and lightweight design. Thanks to the autoclave molded carbon fiber shell, the helmet is both durable and light, adding to the overall comfort. Worth every penny, I recommend this to any racer or HPDE enthusiast. Perhaps they could add more visor options.

Perry L.
Racing-Ready with Stilo ST5.1 GT Helmet

I found the Stilo ST5.1 GT helmet easy to use and loved that it included ports for communications, forced air, and hydration. It definitely feels like it was made with the racer's convenience in mind.

Jasper F.
Big on Vision, Bigger on Safety: The ST5.1 GT Helmet The sizeable eyeport was an unexpected plus....

The sizeable eyeport was an unexpected plus. It improved my field of vision drastically compared to my older ST4. Paired with the helmet's rigorous safety standards, it's my go-to for races now. I do wish the visors were easier to change.

Keegan R.
Boost Your Style with Stilo ST5.1 GT Helmet

I feel it's important for my helmet to represent my style on the track. The Stilo ST5.1 GT Helmet is an amalgamation of safety, style, and comfort. An improvement? Maybe, making the visors more scratch-resistant.

Reid A.
ST5.1 GT Carbon Helmet - A Perfect Fit

A Perfect Fit can be tricky when it comes to helmets. The ST5.1 GT Carbon Fiber Helmet took away my sizing worries, as it has a broad size range to choose from, ensuring the perfect fit. Although, make sure you go up a size from any other brand of helmet as they do run small.

Driver Gear

If you wear it to protect yourself while racing, the Driver Gear collection is where you'll find it!

Shop Driver Gear

Set Up & Trackside

Keep your team safe, prepared, and ready to go with the latest crew gear. Because no matter how many laps you have, how light your helmet is, what your last dyno number is, if your team does not get you to the line on time, you can not win.

Racecar Gear

If you mount it on or install it in your vehicle for track days or wheel-to-wheel racing, the DiscoveryParts Racecar Gear collection is where you'll find it!