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Stilo ST4 Formula Carbon Fiber Helmet




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The ST4 Formula Helmet is the same helmet shape as the ST4 Formula 8860 without the thicker, heavier carbon shell. It carries the Snell 2010 rating which satisfies almost all racing sanctioning bodies requirements for helmet certifications. The shape of the Formula is conducive to use in open and closed cockpit cars, with an optional Aero kit to optimize airflow over the helmet for open cars.

Available with integrated Electronics and your choice of Air Supply or Hydration, this helmet offers flexibility while maintaining a clean cabin. There are no wires or hoses hanging down below the helmet - everything integrates seamlessly with the shell of the helmet. Features an M6 nut integrated into the shell for interfacing with Head and Neck Restraints.


  • Noise attenuating earmuffs
  • 3mm Clear Visor included
  • M6 nut integrated for HANS restraints
  • Integrated radio options
  • Optional hydration system
  • Optional air supply system
NOTE 1: If you select "Right" Electronics, right side Large Port hydration is unavailable. If you select "Left" Electronics, left side Large Port hydration is unavailable.

NOTE 2: If you select "Right" Electronics, only Left side ventilation is available. If you select "Left" Electronics, only Right side ventilation is available.

Please select from the available options before placing your order.

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