The Stilo ST4F Carbon Formula helmet, designed for professional circuit use in Formula cars. Snell SA2010 certified. Constructed from the very best materials, including carbon fibre and EPS expandable polystyrene, formed using an autoclave, to combine a very low weight helmet to achieve the highest safety standards.
This helmet is fitted with a radio system that includes a magnetic-dynamic noise cancelling microphone, integrated radio connection plug, ear plug connection and earmuffs. The helmet also features an integrated radio connection, so no more hanging cables and possible breakages. The whole electronics package, as well as the radio connection plug are integrated into the helmet. Additional wiring connections for the most common car radio systems are also available.
Certified for track use assuring excellent isolation from external noises. They are not fitted with speakers which are not permitted on track, communication is achieved via ear-plugs, also available in the relevent section. The pressure on the head from the earmuffs can be adjusted by replacing the special foam rubber pads positioned between the earmuff and the helmet. Features a 3mm thick visor with tear-off clips and is supplied in two different shell sizes, one for small sizes (XS, S and M) and one for the large sizes (L and XL) and weigh 1370g ±30g* and 1420g ±30g* respectively. * Earmuffs (+40g each), electronics (+24g) and HANS® posts (+40g). Only supplied factory fitted with HANS® Posts.
- Fitted with a magnetic-dynamic noise-cancelling microphone
- The ST4 was the first formula helmet with integrated earmuffs
- Snell SA2010 Approved for Motorsport
