Top 10 Formula Harnesses for 2025
Harness guide, April 2025
Harnesses for single seaters and open wheel cars are a category of their own. A formula car puts the driver on their back with the legs up, the belts anchor to a tub or roll hoop just behind the seat, and there is very little room to spare. A saloon harness fitted to a formula car leaves you with lengths of spare webbing and angles that are not quite right.
For 2025 we have picked ten formula and single seater harnesses from OMP, Sparco, Schroth, TRS and Sabelt, all homologated to FIA 8853-2016. Here is what makes a formula harness different, and what each of the ten offers, from entry level steel hardware to Sabelt's top formula belts.
- All ten are six-point harnesses homologated to FIA 8853-2016
- Formula harnesses are cut for single seater geometry: shorter shoulder runs, steeper lap angles
- Most use 2in shoulder straps made to sit on a HANS or FHR device yoke
- Most bolt in, through the seat or to the tub, rather than clipping to eyebolts
- Picks from OMP, Sparco, Schroth, TRS and Sabelt, from steel to premium hardware
What is on this page
What makes a formula harness different
A formula harness is a six-point belt made for single seaters, open wheel cars and prototypes. The differences from a saloon or GT harness all come from the driving position:
- Shorter shoulder runs. The shoulder straps anchor just behind the seat, to the tub or roll hoop, so they are cut shorter.
- Steeper lap angles. With the driver lying back, the lap straps come in at a steeper angle, and the strap lengths suit a tub, not a cabin.
- Bolt-in fixings. Many bolt through the seat or to the chassis with fixing plates, because there are no eyebolts or cage bars to clip onto.
- Head restraint use. Most use 2in shoulder straps, the width that sits correctly on a HANS or FHR yoke, and many are HANS specific.
- Compact hardware. Small adjusters and buckles save space in a narrow cockpit.
OMP, Sparco and Schroth
1. OMP Tecnica 2 Formula. A six-point head restraint harness cut for single seaters and prototypes. FIA 8853-2016, 2in shoulder and lap straps, an aircraft style buckle, and loop or bolt-in fixings, in black or red. It is built for use with a head and neck restraint.
2. Sparco 6 Point Single Seater FHR. Sparco’s single seater harness, part 04819H. FIA 8853-2016, 2in shoulder and lap straps, and an aircraft buckle that releases the whole harness with one lever. It is FHR friendly, with the shoulder belts sized to sit over a device’s yokes, in black, blue or red.
3. Schroth Formula 2×2. Schroth’s single seater harness, part 94620. FIA 8853-2016, 2in shoulder and lap straps, pull-up lap adjusters, an aircraft buckle and bolt-in fixings, in black or red. It is HANS specific, so a HANS or FHR device must be used with it.
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The TRS Pro single seater range
TRS make three single seater versions of their Pro harness, all FIA 8853-2016, all with an aircraft rotary buckle and all bolt-in, using 8mm fixing plates at the shoulders and 8mm pinch plates at the lap and crotch.
4. TRS Pro Superlite Single Seater FIA HANS. The top of the three, with aluminium shoulder adjusters. The 3in shoulder straps taper to 2in at the HANS attachment, with 2in lap and sub straps. HANS specific.
5. TRS Pro 6 Point Superlite Single Seater. Aluminium shoulder adjusters with steel on the lap, the same tapered shoulder straps, and listed as HANS friendly.
6. TRS Pro 6 Point Single Seater. The entry point, with steel anti-creep shoulder adjusters, 3in shoulder straps and 2in lap and sub straps. HANS friendly.
The TRS single seater harnesses come in a wide choice of webbing colours, useful for matching team colours. Before ordering, confirm your car’s anchor points take 8mm fixings.
Four from Sabelt
Sabelt’s formula range runs from steel hardware up to their premium tiers. All four here are bolt-in, FIA 8853-2016, with 2in shoulder and lap webbing, in black, blue or red.
7. Sabelt Gold Super Formula. The top of Sabelt’s formula range, with Gold series webbing, lighter and more supple than Silver, and a quick release buckle of the type used in senior formula categories. It is made for top level single seater use.
8. Sabelt Silver Formula. Silver series aluminium hardware, lighter than the Steel tier, with a clip buckle. HANS specific.
9. Sabelt Ultralight Formula. Sabelt’s Ultralight webbing, thinner and lighter than Steel or Silver, so it sits flatter and adds less mass. HANS specific.
10. Sabelt Steel Formula Basic. The entry level Sabelt formula belt, with steel hardware and a T-bar clip buckle. HANS specific. Sabelt also make a Steel Formula Mid with a pull-up release buckle, for cars or series that need that type.
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Choosing between them
- Head restraint. If you run a HANS or FHR device, choose a harness made for one. HANS specific belts must be used with a device.
- Fixings. Check how your car’s harness anchors are made, and the bolt size, before ordering. Single seater installations leave little freedom, and some classes check the fixing method as well as the harness.
- Buckle. Some series specify the buckle type. If yours does, that narrows the choice.
- Hardware and weight. Steel hardware is the entry point; aluminium and premium webbing save weight and adjust more easily.
Garreth’s advice is to send us the car, the seat and whether you run a HANS, and to ask us for the label date on current stock, because every FIA harness carries one and scrutineers check it. Our guides to fitting a motorsport harness and how long FIA harnesses last cover the angles and the dates. Your scrutineer has the final word on what your class accepts.
What is a formula harness?
A six-point harness made for single seaters and prototypes, with shorter shoulder runs, steeper lap angles and fixings suited to a tub or roll hoop.
Can I use a saloon harness in a single seater?
It is not made for it. The strap lengths and angles suit a saloon cabin, so you end up with spare webbing and the wrong geometry.
Do formula harnesses need a HANS device?
Many are HANS specific and must be used with a device. Others, such as the TRS Pro 6 Point Single Seater, are HANS friendly.
Are all ten FIA approved?
Yes. All ten are homologated to FIA 8853-2016.
How do single seater harnesses mount?
Most bolt in, through the seat or to the tub, with fixing and pinch plates. TRS’s single seater range uses 8mm plates.
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Where to startMatch the harness to the tub
Pick by HANS use and fixings first; the hardware grade comes after.
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