Customer Question: Can I Use A HANS Device With Normal Seatbelts?
Customer question
This one comes over the counter and down the phone all the time, and it came in again last week. The customer does a handful of track days a year in the car they also drive to work, a friend is selling a barely used HANS, and they wanted to know if it would work with standard seatbelts before any money changed hands.
Asking first saved them a few hundred pounds, because a HANS cannot do its job with a standard three point belt. The reason is mechanical, and once you see it the whole subject untangles, including the one device that genuinely is built for this exact situation.
- A HANS only works with harness shoulder straps clamping it to your body
- A standard inertia reel belt cannot hold the yoke down
- The Simpson Hybrid S is the one device Simpson has tested with a three point belt
- The Hybrid Sport, Endurance and Pro Lite on our shelf are harness devices
- Whichever way you go, the helmet needs FHR posts and matching clips
How a HANS holds on, and why the belt decides everything
Sit a HANS on your shoulders with nothing over it and it is a loose collar with two legs resting down your chest. It starts working the moment a harness is pulled tight over it. The shoulder straps run across those legs, the buckle loads them, and the device is clamped between the webbing and your body. Short tethers connect it to posts on the helmet shell, so your helmeted head and your torso now move as one piece.
A standard three point belt gives the device none of that. The diagonal strap crosses one leg at best, and because the inertia reel pays out webbing whenever you lean, even that strap holds nothing still. The device just rides around on your shoulders with the helmet tethered to it. If you want to feel this for yourself, call in and Cameron will sit one on your shoulders without a harness over it. That settles it quicker than any diagram, including ours.
The whole answer in one picture. A harness loads the yoke through its shoulder straps. A standard belt crosses beside it and moves with you.
The Hybrid part of the answer
The line you will have read on the forums is that a Simpson Hybrid works with normal belts, and it is half right. Hybrid devices strap to your torso with their own harness, so they stay put without a competition belt over them.
Half right, because the family split matters. The Simpson Hybrid S is the one device Simpson has tested and sells for use with a standard three point belt. The Hybrid Sport, Hybrid Endurance and Hybrid Pro Lite we keep on the shelf are harness devices, doing the same job as a HANS in a different way: they sit on the back and shoulders with nothing over the collarbones, and you can climb out of the car still wearing one, which is why endurance and rally crews rate them.
So the device that answers this customer's question is the Hybrid S, and it deserves a proper look.
The Simpson Hybrid S up close
Simpson’s own wording is that the Hybrid S is “the only Frontal Head Restraint proven effective for 3-point harnesses”. It carries the same FIA 8858-2010 homologation as every yoke device on this page, plus SFI 38.1, and Simpson developed it with the Detroit car manufacturers, whose test engineers and driving instructors spend their working lives belted into standard three point seats. Simpson report a big drop in neck tension in their FMVSS208 testing against a helmet worn with a three point belt alone.
The way it works is visible in the photos. The carbon shell sits low on your back and shoulders, its own straps buckle across the front of your chest, and the helmet tethers to it exactly as it would to a HANS. Your belt is no longer being asked to hold the device, because the device is already wearing you. There is no tall back plate to catch on the door or the cage on the way out, and the anchor rings at the bottom take the lap belt of a harness, so the same device is approved for 2 inch and 3 inch competition harnesses if the car gets belts later. It is the one purchase on this page that works on both sides of the fence.
Fitment notes from the spec sheet: standard post clips or Simpson’s M61 quick release tethers on the helmet end, and Simpson offer custom sizing and a women’s cut to order. We do not keep the Hybrid S on the shelf, so it is a phone call: ring 0115 9893488 with your helmet model and car, and we will sort the size, the tether system and the clips in one order. Simpson themselves still call a proper seat and harness setup the best protection, and we agree, which is why the two routes below both exist.
The two routes that actually work
Keep the standard belts
A helmet with FHR posts plus the Simpson Hybrid S, and nothing else on this page. Ring us and we will spec the device, posts and clips to your helmet in one order.
Fit the car for a harness
Once proper shoulder straps are in, every device works and the £324 HANS IV earns its keep. A harness brings the seat and its mounting into the conversation, which is our Sport Seats 4U side, so start with the car rather than the device.
| What you need | Keeping the standard belts | Fitting a harness |
|---|---|---|
| The device | Simpson Hybrid S, price on the phone | HANS IV £324 or Super Sport XLT £354 |
| Helmet hardware | Posts and clips matched to the lid, clips from £72 | Same, clips from £72 |
| The belts | Your standard belts stay as they are | Harness plus proper mounting, priced per car on our Sport Seats 4U side |
| A helmet, if you need one | Any current FIA approved lid, from £331.20 for the Bell Mag, or a package below | Same helmets, same packages |
Prices include VAT, checked 20 August 2026. The Hybrid S and harness numbers depend on spec, so those two are a call to 0115 9893488.
The devices on the shelf
Three devices cover most of what goes over this counter, all FIA 8858 approved. The Schroth Super Sport XLT is the one we sell most of, and Garreth’s call on the money explains why: on a harness car the £324 HANS IV and the £354 XLT protect you the same as anything dearer, because the approval is identical all the way up the price list. Spend more for lighter weight and nicer padding, or spend across to a Hybrid for the easy exit. Do not spend up expecting a different level of protection.
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Those three are counter picks from a bigger shelf. The full yoke range is under HANS devices, the Simpson family under Hybrid HANS devices, and pads, tethers and spares under HANS device accessories. On sizing: Schroth devices go by your collar measurement, with Medium covering 38 to 47cm and Large from 46cm up, and the full measuring walkthrough with diagrams is in Which HANS Device Do I Need.
Helmet posts and clips
Whichever route you take, the helmet joins in. Every current FIA approved helmet has provision for FHR posts, and the posts and clips have to match both the helmet’s homologation and the device’s tethers. The Simpson clips here suit helmets homologated to FIA 8858-2010, FIA 8860-2010 and Snell SA2010 or SA2015, while Schroth run their own Twist anchor system, which is a different fitting again. This is the bit people get wrong buying online, and both systems sit in HANS device accessories with the spare tethers and pads.
Send Cameron the helmet model and the device you are looking at and he will confirm the pairing before anything ships. Two minutes now beats a parcel going back.
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Helmet and device packages
If the helmet is on the shopping list too, these pair a posted helmet with a matched device in one order, with the clips question already answered.
Those four are examples to show the shape of the deal. The helmet and HANS bundles category pairs a spread of our helmet range with either the Schroth XLT or the Simpson Hybrid Sport, so if you want a different lid, the bundle you are after is probably already listed. If it is not, ring us and we will price the pairing anyway.
Questions that come with this one
Do I need an FHR for a track day at all?
Usually the organiser asks for a helmet and covered arms and stops there, but every operator writes its own rules, and where a device is required it will say so in the event regs. Send us the event and we will read them with you.
Which angle and size do I need?
Twenty degree devices suit almost every saloon and sports car, and sizing runs off your collar measurement. The full walkthrough is in our guide Which HANS Device Do I Need, or ring us with a tape measure handy.
Is a second hand HANS worth buying?
Sometimes. The label carries the model, size, homologation and date of manufacture, so we can tell you exactly what is being sold. Send us photos of the label before money changes hands and we will give you a straight answer.
Can I fit a harness and keep the standard belts for the road?
Yes, plenty of track day cars run both, the harness for circuit days and the standard belt for the commute. The mounting has to be done properly and the seat has a say in it, so tell us the car and seat and we will go through it.
Have these ready when you ring
- The car, and what belts it runs today
- Your helmet make and model, plus the homologation label inside it if it has one
- Your collar measurement in cm, tape round the base of the neck
- What the car does: track days, sprints, hillclimb or racing
Give Garreth and Cameron those three facts and they will confirm the right device and every bit of helmet hardware before you spend anything. If the answer is the Hybrid S, that is the same call.
Can I use a HANS device with my car's normal seatbelts?
No, not with a standard three-point belt. The diagonal strap only crosses one shoulder and pays out webbing as you lean forward, so it cannot hold the HANS yoke down in an impact. You need a harness with shoulder straps that load evenly across both sides. The buckle clamps the device between the webbing and your body, and that is what actually restrains it.
The one exception is the Simpson Hybrid S. It has its own torso straps and buckles across the chest, so it does not rely on the car’s belts at all. Simpson sells it as the only FHR proven for three-point harnesses. Everything else needs a proper racing harness fitted, not the factory belts.
