Simpson’s Hybrid S model is currently the only Frontal Head Restraint (FHR) proven effective for use with 3-point harnesses. It carries both FIA and SFI certifications. Developed in collaboration with Detroit automotive manufacturers, the Hybrid S has also undergone third-party testing to meet FMVSS208 standards - relevant in the United States DOT market.

The Hybrid S provides drivers using 3-point seatbelts—such as high-performance driving instructors, automotive test engineers, and others—with access to the enhanced safety benefits of head restraint systems. In testing, the FIA Hybrid Head Restraint, used with a Snell or FIA-rated helmet and a 3-point harness, significantly reduced neck tension compared to setups using only a helmet and 3-point harness.

While Simpson is proud to offer this head restraint solution compatible with 3-point belts, driver and instructor safety remains our highest priority. For optimal protection on the track, we strongly recommend a Full Containment Cockpit System, which includes a Full Containment Seat, a Snell or FIA-rated Helmet, an FIA Frontal Head Restraint, and a 6-point seatbelt harness system.

 
Features of the Hybrid S:

Compatible with 3-point seatbelts
Constructed from high-quality carbon fibre
Low-profile design – no high back to snag on bars during exit
Multiple load paths to better distribute head forces
Front buckle attachment – no bulky under-arm straps
Integrated seat belt anchor system