Head and Neck Restraints Explained: HANS, Hybrid and FHR

In a frontal impact your torso stops with the car and your head keeps going. The helmet adds mass to it. That load goes through your neck, and it is the mechanism behind basilar skull fracture — the injury that killed drivers for decades until frontal head restraints became mandatory in professional motorsport.

A frontal head restraint (FHR) sits on your shoulders and tethers to two anchor posts on your helmet. When you decelerate, the tethers limit how far your head pitches forward and push that load into your shoulders and chest instead of your neck. It is the single best value in safety equipment, and this guide covers how to choose one.

For how the FHR fits alongside the seat, harness and roll protection, start with our HPDE safety gear overview.

Two Families, One Critical Difference

Every FHR falls into one of two groups, and the difference decides whether you can use one at all.

Yoke-style devices — the HANS and the Stand 21 FHR — sit under your shoulder belts. The belts are what hold the device down. That means they require a five, six or eight-point harness. With factory belts they do not work.

Body-tethered devices — Simpson's Hybrid family — strap to your torso instead of relying on belts to pin them. The Hybrid S is FIA and SFI approved and separately tested for use with a standard three-point belt. That makes it the only real option for a stock car, and the only option for a DE instructor sitting in the right seat of a student's car.

If you run factory belts, that distinction is the whole decision. There is more on it in our guide to harnesses and HANS compatibility.

If You Run Factory Belts

Simpson Hybrid S Head and Neck Restraint $1,199.95 — works with 3-point belts and harnesses Shop on Enzuca →

Simpson Hybrid Sport Head & Neck Restraint $722.95 — the more affordable Hybrid Shop on Enzuca →

If You Run a Harness

With a proper five or six-point harness the yoke devices open up. They are lighter, cooler and cheaper. The Stand 21 Club 3 is homologated to both FIA 8858-2010 and SFI 38.1, so it is accepted almost everywhere — worth paying for if you run with more than one club.

Stand 21 Club 3 Head and Neck Restraint $399.00 — FIA 8858-2010 + SFI 38.1 Shop on Enzuca →

HANS III 20L FIA — Large, Post Anchors $434.95 — upright seating position Shop on Enzuca →

HANS III 30L FIA — Large, Post-Anchor $562.95 — reclined position or broader chest Shop on Enzuca →

Three Things People Get Wrong

The anchors are a separate purchase. Your helmet needs M6 threaded inserts — every Snell SA and FIA auto helmet has had them since SA2015 — but the posts themselves usually are not included. Budget for a post anchor set and fit them before your event, not in the paddock.

Shoulder angle is not a comfort preference. Twenty degrees suits an upright touring-car position, which is most of us. Thirty degrees suits a laid-back formula or prototype angle, and it is also the better fit for a broader chest.

Homologation expires, even when the device does not. FIA 8858-2010 devices carry no expiry, but tethers stretch and should be replaced on the manufacturer's schedule. SFI 38.1 certification runs five years and then needs recertification, which is inexpensive and usually includes new tethers.

Which Helmet Works

Any current Snell SA or FIA auto helmet with M6 inserts will take an FHR. A motorcycle M-rated helmet will not — it has no inserts, no fire rating and no roll-bar impact test. If your helmet says SA2015 it is no longer accepted at most events as of January 2026. See our Snell vs FIA standards guide and our helmet fitting guide.

The Short Version

Factory belts mean a Simpson Hybrid. A harness means a Stand 21 Club 3 or a HANS III. Either way, match the shoulder angle to how you sit, buy the anchor posts at the same time, and put the recertification date in your calendar.

Browse the full range in Head & Neck Restraints, or pair one with a current helmet and a harness.