Corbeau Pro Series X System 5 XL FIA Motorsport Bucket Seat

From £835.00 Incl. VATFrom £835.00 Excl. VAT

FIA 8855-1999-homologated seat sized for a 36in to 40in waist. The showroom team sit in these seats every day, so call with your height and waist for the honest fit answer.

Product Colour

Coloured Shell

Clear

Additional Upgrades

Package Bundle Recommendations

Choose any extras you would like added to this product.

Corbeau Seats Fitted Lumbar Support

£30.00

Endurance Motorsport Steel M10 Side Mounts – B301648 – GSM Performance

Endurance Motorsport Steel M10 Side Mounts for Corbeau Seats

£32.50

Corbeau Pro 2006SSU 6 Point FIA Harness Belt

£175.00

Add to wishlist

Size/Fitting guide

Save to Pinterest

The Pro Series X in full Carbon composite, XL width, FIA 8855-1999, no head protection, HANS zone. Part code SF256. The widest and lightest combination in the Pro Series X range.

System 5 full Carbon brings shell weight below System 3 Carbon/Kevlar, at £100 more for this size (System 3 XL is SF236). For competitive circuit racing or endurance events where the car runs close to the class weight minimum, the full Carbon shell in XL is the right choice. The XL width covers drivers who found the standard Pro Series X tight across the hips.

Five harness slots, 10mm 12.9 cap head bolt inserts at the mounting points, HANS zone, side mount. Gel coat colour options on the shell exterior.

Price is for one seat. Brackets are not included.

Additional information

Product Colour	Black, Black and Blue, Black and Grey, Black and Red
Approval	FIA 8855-1999
Brackets included	Seat only
Brand	Corbeau Seats
Construction	Carbon Fibre seats
Driver Height	All heights suitable
Driver Waist Size	36" – 40" waist
Fixing Type	Side mount
Harness compatibility	4 point compatible, 6 point compatible
Mechanism Type	Fixed Back Seats
Protection Type	No head support
Trim Material	Fabric
Coloured Shell	Black, Blue, Grey, Orange, Other (Please confirm RAL code), Purple, Red, White, Yellow

Corbeau seat size guide

Corbeau size their composite buckets Standard or XL, and the rule for choosing is one line long. The System number is the shell material, not the size.

How Corbeau size their seats

Corbeau’s own guidance for the Sprint X, Pro-Series X, Revenge X, Revolution X and RXC X is Standard up to a 34 inch waist and XL from 34 inch. Our product pages band them as Standard 32 to 36 and XL 36 to 40, which is the same rule with room either side. A 34 to 36 inch waist is the crossover: if you carry your weight on your hips take the XL, if you are tall and lean the Standard.

System 1, 3 and 5 are the shell layup. System 1 is GRP and Kevlar, System 3 Kevlar and carbon, System 5 full carbon. The shape and the sizes are the same across all three, so pick the size first and the System on weight and budget.

The Sportline reclining seats (RRS, RRB, SVR, VLS, Dakota and the rest) are one size for a 32 to 38 inch waist. The Classic bucket comes in Standard and Excel width, the Excel being the wider shell.

Which Corbeau fits you

Model	Waist band	Driver height	Shell	Approval
Motorsport, FIA 8855-1999
Sprint X System 1, 3, 5	Standard 32 to 36 / XL 36 to 40	Under 6 ft	GRP-Kevlar, Kevlar-carbon or carbon	FIA 8855-1999
Pro-Series X System 1, 3, 5	Standard 32 to 36 / XL 36 to 40	Under 6 ft (System 3 all heights)	GRP-Kevlar, Kevlar-carbon or carbon	FIA 8855-1999
Revenge X System 1, 5	Standard 32 to 36 / XL 36 to 40	Standard under 6 ft, XL all	GRP-Kevlar or carbon	FIA 8855-1999
Revolution X System 1, 5	36 to 40 (both sizes)	Under 6 ft	GRP-Kevlar or carbon	FIA 8855-1999
RXC X System 1, 3, 5	Standard 32 to 36 / XL 36 to 40	Under 6 ft	GRP-Kevlar, Kevlar-carbon or carbon	FIA 8855-1999
Hexa System 1 / System 3	36 to 40 / 32 to 36	All heights	GRP-Kevlar / Kevlar-carbon	FIA 8855-1999
LE Standard, LE Driver, LE X (Lotus)	32 to 36	All heights	Composite	Track
LE Pro System 1, 3, 5 (Lotus)	28 to 36	All heights (System 3 under 6 ft)	Composite	Track
Sportline reclining
RRS, RRS Elite, RRS Limited, RRS Low Base	32 to 38	All heights	Steel frame	Road and track
RRB, SVR, VLS, VLS Limited, VLS Low Base	32 to 38	All heights	Steel frame	Road and track
Dakota, Boss Evo 2, PSR, Sportsman	32 to 38	All heights	Steel frame	Road and track
Classic
Classic and Alpine	Standard or Excel width, all sizes	All heights	Steel frame	Road and track
GT4 Retro, GT8 Highback	All sizes	All heights	Steel frame	Road and track

Low Base versionsThe RRS Low Base and VLS Low Base are the same shell on a lower frame. Choose them for headroom, not for width.

All the X-range buckets mount through Corbeau Pro-Team side mounts with M10 12.9 fixings. The side mounts come in four angles (35 degree, 90 degree, 90 degree extended and restricted space), which is the car’s decision rather than the driver’s.

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 Corbeau 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. The Standard to 34 inch, XL from 34 inch rule and the System layups are from corbeau-seats.com, read the same day.

Have you written anything about this exact product?
Yes, we have covered this exact product: Which Is Right For You? Corbeau Pro Series VS Pro Series XL, and Driver Profile: Corbeau Pro Series VS Pro Series XL. 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 with a 36in to 40in 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

Corbeau seats are handcrafted here in the UK

FIA bucket seats are built to order, typically 3 to 7 days from the day you order. Kevlar and carbon shells take longer, so ask us if you are working to a date.

Reclining sport seats are also made to order in your chosen trim, and run to a similar timescale.

Made to your specification

Seats built to a specification you have chosen are made for your order, so our special order terms apply once production has started.

Tell us the car and how it is used and we will confirm the right shell and trim before you commit.

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.