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Stilo ST5.1 GT Carbon Fiber Helmet SA2020


PRE-ORDER ONLY! Helmets will ship first week of October 2020. Reserve yours now!

Stilo ST5.1 GT Carbon SA2020 Helmet

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.

How to Measure Your Head for a Helmet                 CMS Stilo Helmet Owner's Kit

  • New 2020 Snell Certification offers increased protection for all head forms at higher g-forces and speeds
  • All Existing Stilo ST5 shields and other Stilo accessories work on new ST5.1 SA2020 helmets

The ST5.1 GT Carbon is Stilo's Snell 2020-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 Composite 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 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).

Stilo ST5.1 GT Comm Port

The Stilo ST5.1 GT Composite is unsurpased in built-in flexibility. Its two side ports can be fitted with 3 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.

  • Includes noise attenuating earmuffs to reduce exterior noise and maximize effectiveness of communications with your crew.
  • Select communications, forced air, hydration or eject options now, or add them later

Other Versions of the Stilo ST5.1 GT Helmet at Competition Motorsport

For the composite version of this helmet, see the Stilo Helmets ST5.1 GT Composite Helmet.

For the FIA 8860-2018 version of this helmet, see the Stilo Helmets ST5 GT Zero 8860-2018 Carbon Helmet.

An effective helmet is one that fits properly. Have an assistant use a measuring tape, or a piece of string to measure the circumference of your head starting at a point approximately one inch above the eyebrows in front, around a point in the back of the head that results in the largest possible measurement, and finally wrapping back to the front. It is a good idea to take several measurements, and order your helmet based on the largest of those measurements.

This helmet will ship to you with signature required for delivery.

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