You can have the best helmet money can buy and still get badly hurt without one small piece of gear. New racers obsess over helmets, suits, and shoes. The head and neck restraint gets skipped, misunderstood, or bought wrong. So let me clear it up.
A HANS device is the gear that keeps your head from snapping forward in a crash. It is not optional in real racing. NASA and SCCA both require one before you turn a wheel. Here is what it is, how it works, and what to actually buy.
Photo by Henrik Hjortshøj on Unsplash.
What a HANS Device Actually Is
HANS stands for Head and Neck Support. It is a U-shaped collar you wear over your shoulders, under your harness belts. Two tethers connect it to your helmet.
Quick note on the name. "HANS" is actually a brand. Dr. Robert Hubbard invented the original in the 1980s. Today the catch-all term is FHR, which means frontal head restraint. Companies like Simpson, NecksGen, Zamp, and Schroth all make their own versions.
So when people say "HANS device," they usually just mean any head and neck restraint. We use the term loosely too. Just know that when you shop, you are buying an FHR, and HANS is one of several brands.
How It Protects You
Here is the physics in plain English. You don't need an engineering degree, even though I have one.
In a hard frontal crash, your car stops fast. Your body stops with it because the harness holds you. But your head is heavy and it keeps moving forward. Your neck is the only thing trying to stop it.
That violent whip is what causes a basilar skull fracture. It's where the base of the skull separates from the spine. It killed a lot of drivers before head and neck restraints became standard.
The collar and tethers catch your head and pass that energy into your shoulders, chest, and harness instead of your neck.
That's the whole job. The device lets your head move normally while you drive. Then in a crash it limits the forward and rotational whip your neck can't survive on its own. Tested devices have to handle impacts up to 70 Gs.
Why NASA and SCCA Require One
This isn't LFR being cautious. The sanctioning bodies make the call.
Both NASA and SCCA require a head and neck restraint that carries an SFI 38.1 or FIA 8858 certification label. No sticker, no race. Officials check for it in tech inspection.
If you want to understand how tech and licensing actually work before your first event, we walk through the whole weekend in our post on the Spec Miata race weekend schedule. The head and neck restraint is one of the first things they look for.
The certification matters as much as the device itself. A cheap knockoff with no SFI or FIA sticker will get you turned away at the gate. Worse, it might not protect you.
The Recertification Trap Nobody Warns You About
This is the part that catches used-gear buyers. The certification expires.
SFI 38.1 devices need recertification every five years, done by the original manufacturer. FIA 8858 tethers carry an expiration date printed right on them. So a "great deal" on a used restraint can be worthless if the cert has lapsed.
Before you buy anything secondhand, check three things:
- The certification sticker is present and readable — SFI 38.1 or FIA 8858.
- The date hasn't expired — and you know what recert costs if it's close.
- It hasn't been in a crash — manufacturers recommend inspection after a major impact.
Getting a driver properly geared and legal is part of what we handle in the Kart to Car program. We don't hand someone a fast car and assume they figured out the safety side alone. We make sure the restraint, the harness, and the helmet all work together before they ever get on track.
What It Costs
Head and neck restraints have a wide price range. You can find legitimate, SFI-certified entry options that won't wreck your budget. Brands like Zamp make adjustable models aimed at grassroots racers.
The original HANS brand and higher-end carbon models cost more. Historically the cheapest HANS started around $675, with mid and high models climbing past $1,200 and up toward $2,000 for premium builds. Materials and weight drive the price.
Here's my honest take. This is not the place to chase the absolute cheapest sticker price, but you also don't need the $2,000 carbon piece to be safe. A mid-tier, properly certified device that fits you correctly is the right call for almost every new racer.
How to Get the Fit Right
A restraint only works if it fits. Sizing varies by brand, so read the chart for the one you buy.
- Collar-style HANS devices size off a neck measurement.
- Hybrid-style devices (like the Simpson) size off a chest measurement — taken over your fire suit.
- Adjustable models (like Zamp's) tweak shoulder width and tether angle so sizing is more forgiving.
Two real tips. Always measure while wearing your race suit, because it changes the numbers. And match the tether angle to your seating position, since a laid-back formula seat and an upright Miata seat aren't the same.
A restraint that's too loose lets your head move before the tethers catch it. Too tight and you'll hate wearing it, which means you'll fight it instead of focusing on driving.
The Bottom Line
A head and neck restraint is the cheapest insurance against the injury that used to kill racers most. It's required, it's verified at tech, and it has to be in cert to count.
Buy a properly certified device. Get the fit right. Check the dates on anything used. That's the whole game.
If you're building your first-season gear bag and want a simple, no-guesswork checklist of what to bring and what tech will check, grab our free Race Day Ready Pack. It's the same prep system we run before every weekend, and it'll keep you from showing up to your first event missing something that matters.
Do you believe?
Sources: HANS device (Wikipedia), NecksGen — What is SFI Spec 38.1?, Speedway Motors — HANS Device Buyers Guide, SCCA — Head and Neck Restraints. Certification rules and pricing verified against these sources as of June 2026, plus my own experience getting LFR drivers through tech inspection.
