OMP RT Carbon / Fibreglass FIA Motorsport Seat

From £707.96 Incl. VATFrom £589.97 Excl. VAT

OMP RT Carbon / Fibreglass FIA Motorsport Seat by OMP Racing. Approval: FIA 8855-1999. Brand: OMP Racing. Coloured Shell: Black.

Construction

Trim Material

Clear

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Size/Fitting guide

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The OMP RT, available in carbon or fibreglass. Part number HA0-0831-A01.

OMP describe the RT as street friendly, and that is the useful thing to know. It is a fixed back competition shell that is genuinely liveable in a car you drive on the road: the bolsters hold you without you having to climb over them, and the shape is less extreme than the seats built purely for circuit use.

Carbon or fibreglass

The choice at the top of the page is the real decision here, and it is a weight question. The carbon shell comes in at around 5.2kg. The fibreglass is roughly twice that. Both carry the same FIA 8855-1999 homologation and satisfy the same scrutineer, so the carbon is not buying you approval, it is buying you five kilos and a stiffer shell.

On a road car or a club car, the fibreglass is the sensible buy. In a series where weight is being counted properly, the carbon starts to make sense.

Mounting

Side mount at 290mm lateral spacing, which is the common competition figure. Head and neck restraint compatible.

Supplied as the seat only. You need approved side mounts and a vehicle specific sub-frame. An approved seat on unapproved mounts is not an approved installation.

Ask us to read the manufacture date off current stock before you order, because an FIA seat expires on a date tied to when it was built rather than when you bought it.

Additional information

Weight	11 kg
Dimensions	80 × 60 × 1220 cm
Approval	FIA 8855-1999
Brand	OMP Racing
Coloured Shell	Black
Construction	Carbon Fibre seats, Fibreglass seats
Driver Height	Under 6ft
Driver Waist Size	32" – 36" waist
Fixing Type	Side mount
HANS Compatibility	HANS Friendly
Harness compatibility	4 point compatible, 6 point compatible
Mechanism Type	Fixed Back Seats
Product Colour	Black
Protection Type	No head support
Trim Material	Alcantara / Leather, Leather

OMP seat size guide

OMP publish a full dimension table for every shell, which makes them the easiest brand to size from a measurement. Most models are one size, with XL versions on the HTE-R, WRC-R, HRC-R and TRS-E.

How OMP size their seats

OMP quote external width at the shoulders, external width at the base, overall height and, the useful one, the inner width at the belt holes. Compare that inner width with your seated hip measurement: you want 20 to 40 mm of room, no more. The XL shells add 20 to 45 mm of inner width and 30 to 60 mm of height.

The HTE-R is the mid-size shell at 390 mm inside; the HTE-R XL and WRC-R XL go to 415 mm; the TRS-E XS is the slim one at 330 mm. Carbon versions of the same model are a little narrower than the fibreglass ones, which is worth knowing if you are at the edge.

OMP dimensions

From OMP’s race seat size guide. All figures in mm; weight is the complete seat, plus or minus 10 percent.

Model	Shoulder width	Base width	Height	Inner width	Weight
Fibreglass
HTE-R	560	515	880	390	9.4 kg
HTE-R 400	560	515	880	390	10.2 kg
HTE-R XL	580	530	920	415	10.5 kg
HRC-R Fibreglass Air	620	470	900	365	9.5 kg
HRC-R Fibreglass Air XL	610	490	980	400	10.3 kg
WRC-R	620	510	890	390	8.8 kg
WRC-R XL	665	520	920	415	10.7 kg
ARS-R	590	500	910	370	8.9 kg
RS-P.T.2	565	510	880	395	10.4 kg
Champ R	590	520	890	360	8.8 kg
First-R	620	510	890	390	8.9 kg
Carbon
HTE-R Carbon	545	465	880	370	6.6 kg
HTE-R Carbon XL	560	485	890	390	6.8 kg
HRC-R Carbon	615	460	890	365	5.8 kg
HRC-R Carbon Air	615	460	890	365	6.2 kg
HRC-ONE	615	455	900	365	9.2 kg
WRC-R Carbon	590	495	890	365	5.6 kg
ARS-R Carbon	585	480	890	360	5.8 kg
Tubular steel
TRS-E, TRS-E Plus, TRS-E Sky	585	510	890	390	10.3 to 10.8 kg
TRS-E XS	520	420	870	330	10.2 kg
TRS-E XL	625	540	950	415	12.3 kg

Which OMP fits you

Model	Waist band	Driver height	Shell	Approval
Competition, FIA
HTE R	Standard 32 to 36 / Excel 36 to 38	All heights	Fibreglass or carbon	FIA 8855-1999
HTE R 400	32 to 36	All heights	Fibreglass	FIA 8855-1999
HTE EVO, HTE EVO VTR, HTC EVO VTR	36 to 38	All heights	Fibreglass	FIA 8855-1999 / 8855-2021 (VTR)
HGT / HGT Evo	36 to 38	All heights	Carbon / fibreglass	FIA 8855-1999 / 8855-2021
HRC R, HRC R Air	32 to 36 carbon, 36 to 38 fibreglass	All heights	Carbon or fibreglass	FIA 8855-1999
HRC One	36 to 38	All heights	Carbon	FIA 8862-2009
WRC R	32 to 36	Under 6 ft	Fibreglass	FIA 8855-1999
WRC R XL	36 to 42	Under and over 6 ft	Fibreglass	FIA 8855-1999
ARS, ARS R	36 to 38	All heights	Fibreglass	FIA 8855-1999
RS PT 2, Champ R	32 to 36	Under 6 ft	Fibreglass	FIA 8855-1999
First R	32 to 38	Under 6 ft	Fibreglass	FIA 8855-1999
RT	32 to 36	All heights	Fibreglass or carbon	FIA 8855-1999
TRS E Sky	28 to 36	Under 6 ft	Tubular steel	FIA 8855-1999
Road and track
HTE EVO Off	32 to 36	All heights	Fibreglass	Road and track
Classic
1970s Revival, Brands Hatch, Silverstone	All sizes	All heights	Steel frame	Road and track

The WRC-R XL is the big oneAt 665 mm across the shoulders and 415 mm inside it is the widest OMP we list, and the only one we band to a 42 inch waist.

Every OMP shell in the table fixes through the side with four M8 8.8 bolts as a minimum. The TRS-E also takes bottom fixing.

Measure yourself first

Four numbers decide whether a seat fits. Take them in the clothes you drive in, and write them down before you compare models.

AWaistAround your natural waist, not your trouser size. Trouser sizes usually run an inch or two under the real figure, and the waist bands on our product pages use the real one.

BSeated hip widthSit on a hard chair with your feet flat and measure straight across the widest point of your hips with a rule or a straight edge, not a tape that follows the curve. This is the number that decides whether a fixed shell is tight.

CShouldersStraight across the back at the widest point. Fixed back seats hold you here, so a shell that is narrow at the shoulders is uncomfortable long before it is unsafe.

DHeight and torsoYour height, and if you are over 6 ft whether that is mostly leg or mostly body. A long body needs a taller shell with the head support set higher.

Before you order

Check the car, not only the driver. Transmission tunnels, door cards and B pillars are what stop a wide shell going in. Our seat mounting and fixing points guide covers what to measure.
Side mount and base mount shells are not interchangeable. Which one you need depends on the car and the subframe, so pick the brackets at the same time as the seat.
If you run a HANS or plan to, filter on HANS friendly. The shoulder openings are cut to clear the collar.
FIA seats carry an expiry date on the homologation label. Check what your championship accepts and how long the seat has left, particularly on discounted older stock.

Send us your measurementsWaist, seated hip width, height and the car. We have fitted a lot of OMP seats and will tell you honestly if the one you have picked is going to be tight. Call 0115 989 3488 or email Sales@GSMPerformance.co.uk.

Waist bands and heights are our product data, checked 6 September 2026. Dimensions and weights are from OMP’s race seat size guide.

Have you written anything about this exact product?
Yes, we have covered this exact product: Customer Car: Porsche 997 Fitted With OMP RT Seats, and The OMP RT Carbon Fibre Bucket Seat In-Store Showcase. That is first-hand coverage from our own builds and showroom, not brochure copy.

Will I fit in this seat?
The maker sizes this seat for drivers under 6ft in height with a 32in to 36in waist. Those are the paper numbers; how a seat actually feels to sit in and climb out of is a different question, and our showroom team sit in these seats every day, so call us with your height and waist and we will give you the honest answer.

Is it FIA approved, and for how long?
Yes, it carries FIA 8855-1999 homologation. Every FIA seat has a not-valid-after year printed on its homologation label, and that label date is what a scrutineer checks, so look at the label on the seat you receive and check it against your championship regulations. Buying new means you get the freshest label the maker currently produces.

What do I need to fit it to my car?
This is a side-mount seat: it hangs between side brackets, the motorsport-style stack with fine height and angle control. You will need the car-specific frame, and a sliding runner if you want fore-and-aft adjustment. Our guide on base mount versus side mount walks through the whole stack, and tell us your car and we will quote the full kit.

Does it work with harnesses and a HANS device?
The shell takes 4 point compatible and 6 point compatible. If you are planning the full seat, harness, and HANS setup, tell us the car and we will spec it end to end.

How do I know it will feel right, not just fit on paper?
Fair question, because makers publish widths and weights, never feel, and two seats with identical numbers can feel nothing alike in the car. We keep the ranges on display in the Nottingham showroom, you are welcome to come and sit in them, and if you cannot get to us, call and describe your build, as the team sit in these seats every day. Our head support measurements guide shows the kind of real-world data we collect.

Availability

OMP deliveries arrive every two weeks

OMP produce in batches and we receive their products on a fortnightly basis, so their most popular seats, harnesses and equipment are generally available for quick dispatch.

Reclining sport seats and less common trims are brought in to order, so those take longer.

If you have a date

Tell us when you order and we will confirm the current lead time before you commit, rather than leaving you to find out afterwards.

In-store displays:

We have a premium range of over 125 seats from brands including: Bimarco, Cobra, Corbeau, Sparco, OMP, Recaro, GP-Race, and Bride to name just a few brands we work with.

Alongside this, we also stock and display HANS devices, harnesses, race-wear, race-suits, FIA helmets and various other safety equipment. If you are looking to visit us to see and try any particular seat or product, please contact us in advance and we’ll be happy to help.

In-Store appointments:

Due to the specialist nature of our services, we do ask that you please contact us in advance to book an appointment. We have multiple slots available each day including selected availability at the weekend.

Working by appointment allows us to dedicate our time with you and provide a personal and professional service. We’ll always ensure you leave with the right equipment for your needs.

Spread the cost with Klarna

Choose Klarna at checkout and pick the plan that suits you. The options and amounts for this product are shown below, and they update when you choose an option above.

Use the purchase power check in the Klarna box for a quick, no-obligation look at what you could be approved for before you order.

How it works at GSM SportSeats4u

1Add the product to your basket and go to checkout as normal.
2Select Klarna as your payment method and choose your plan. Klarna gives you a decision in seconds.
3We dispatch straight away. You pay Klarna on the schedule you chose, and any refund goes back through Klarna.

Your questions, answered by Klarna

Klarna is available to UK residents aged 18 and over. Subject to status. Terms and conditions and late fees apply. Klarna Financial Services UK Limited is authorised and regulated by the Financial Conduct Authority. Full details at klarna.com/uk. Every way you can pay with us is on our payment and finance page, or call 0115 989 3488 and we will talk it through.

Fast delivery lead times:

If you require fast delivery, please contact us in advance of ordering and we’ll happily check stock allocation and availability for you. We carry a large amount of stock at our showroom and across multiple distribution hubs. This allows us to provide immediate dispatch across a huge number of brands from Corbeau and Cobra through to Sparco and OMP. (Does not apply to all items)

Due to the niche market we work in, some products are custom hand made to order, or special order from manufacturers like PCI Racing and Planted Technology. If you want to know how fast a product will be dispatched. Simply drop us a message through our Contact us form.

Addtional lead time notes:

Quick dispatch: Stocked products are dispatched within 24-48 hours with Parcel Force.
Sparco roll cages: We can only deliver these to a registered (LTD) company address.
In-store collection: Please contact us in advance to book an in-store collection appointment.