The MX-5 is a car that rewards feel more than outright power, and the factory seats reflect that: comfortable enough for a long run but without the lateral support to match how the chassis handles a fast corner. That is the conversation we have most often with MX-5 owners in the showroom. The second one is with taller drivers who find the standard seat puts them too high once a rollbar or half cage is in.
This guide covers the five reclining seats we recommend for the Mk1 NA (1989 to 1997) and Mk2 NB (1998 to 2005). The MX-5 has a distinctive H-shaped sliding frame on the floor, and the Cobra adaptor bars (14306) are built for it specifically. They bolt onto the top of the existing H-frame rather than replacing it, so the factory forward and back adjustment carries over to the new seat. No separate runner kit needed.
Most cars in this programme need a replacement subframe that bolts to the floor in place of the factory seat rails. The MX-5 works differently. The Mk1 and Mk2 both use an H-shaped sliding frame that runs between the seat and the floor, and the Cobra adaptor bars (14306) bolt to the top of that existing frame rather than removing it. The H-frame continues to do the sliding, so the factory seat adjustment carries over to the new seat. That is a genuine practical benefit on a car people drive every day: you keep the position range you are used to, and there are no additional runners to source and fit.
Part 14306, £44.00 inc VAT a set. One set per seat. Bolts to the car's existing H-shaped sliding frame. Takes any seat with the 291mm x 330mm Cobra pattern. The Corbeau PSR also fits, drilled for both the Cobra and Sparco patterns.
Every seat in this guide bolts to the adaptor bars through a base mount pattern. Cobra recliners use 291mm x 330mm, and all four Cobra seats here share that measurement. The one exception is the Corbeau PSR, which Corbeau drill for both the Cobra 291mm and the Sparco 345mm patterns. That makes the PSR the only non-Cobra seat we can confirm fits on the MX-5 H-frame adaptor route. A Sparco recliner on its own, for instance, would not work here because its pattern does not line up with the Cobra bars.
| Seat | Bolt pattern | Cobra H-frame adaptors |
|---|---|---|
| Corbeau PSR | Both | Fits |
| Cobra Daytona | 291 x 330 | Fits |
| Cobra Le Mans / Heritage | 291 x 330 | Fits |
| Cobra Le Mans Carbon Edition | 291 x 330 | Fits |
| Cobra Misano Anniversary | 291 x 330 | Fits |
The Corbeau PSR is the one recliner outside the Cobra family that we can confirm fits the MX-5 H-frame adaptor bars. Corbeau drill the PSR for both the 291mm Cobra pattern and the 345mm Sparco pattern, which is how it works here. We verified the installation on a Mk1 NA and wrote up the full process, so there is already a Corbeau PSR MX-5 fitting guide on the site covering exactly this combination. If the PSR is the seat you want, read that alongside this guide.
It comes as a pair, both seats in one order at £558 inc VAT. Individual seats are available at £279 each if only one side needs replacing, though most customers do both sides when the conversion is right.
The Daytona is the seat Cameron puts most MX-5 customers in when they want proper lateral support for track work. The bolsters at the shoulders and thighs are deeper than anything else in this guide, so your body stays put through the quick stuff and your arms do the steering. It is also where the Cobra Signature range starts: you can have the Daytona in any trim combination, from plain black cloth through to two-tone leather with contrast stitching, and there is a heating and lumbar option if the car covers winter miles. The Tartan Edition is the ready-to-order version for anyone who wants the distinctive look without speccing it from scratch.
Where the Daytona holds you hard, the Le Mans works over distance. The bolstering is less aggressive, the base cushion is longer, and the overall shape suits a driver who wants the car tighter through the bends without the seat announcing itself every time they get in. It is the seat that gets recommended when the MX-5 is as much a weekend touring car as it is a track car. The Heritage version swaps the standard centre panel for a tartan insert; same structure underneath, more character on the outside. At £649 inc VAT it is a small step up from the Le Mans at £619.
The Le Mans Carbon Edition is the Le Mans for owners where weight is part of the brief. The carbon outer shell reduces the seat weight and stiffens the backrest compared to the standard shell, so there is less flex under lateral load. On a car where the appeal is partly in how light it feels, that is a genuine argument rather than a spec-sheet detail. The carbon weave is also visible on the outer shell rather than hidden underneath trim, which suits the MX-5’s character. At £714 inc VAT it sits between the Heritage and the Misano Anniversary in the lineup.
The Misano Anniversary is the best reclining seat Cobra make, and the one we point at MX-5 owners who want the seat to feel as though the car was built around it. The bolsters are deep, the cushioning is where the money went, and despite being the most substantial seat in this guide it is also the lightest at 11.5kg. It comes through the same Cobra Signature trim system as the Daytona, so the colour, material, stitching and options are yours to configure. At £1649 inc VAT it is at the top of the list. In the showroom, nobody who has sat in one has walked out asking for the cheaper seat instead.
The Cobra H-frame adaptor bars (14306) come as a set of two bars per seat. They bolt to the top of the car’s existing H-shaped floor frame, and the seat bolts onto the bars. The H-frame does the sliding, so the factory forward and back adjustment carries over to the new seat. There are no additional runners to order for any of the seats in this guide on this route.
| Your seat | What to order | Additional parts |
|---|---|---|
| Corbeau PSR | Cobra H-frame adaptor bars (14306), one set per seat | None. The H-frame does the sliding. |
| Cobra Daytona, Le Mans, Le Mans Heritage, Le Mans Carbon Edition, Misano Anniversary | Cobra H-frame adaptor bars (14306), one set per seat | None. The H-frame does the sliding. |
Before fitting: confirm the H-frame is clean and undamaged. Torque the adaptor bar bolts to the frame, then torque the seat bolts to the adaptors. Check seat belt buckle clearance with the seat in the furthest forward position before driving, because a sport seat often relocates the buckle relative to where the standard seat left it.
The Cobra seats in this guide are listed individually; fitting both sides of the car means two orders. The Corbeau PSR is the exception and comes as a named pair, both seats in one order at £558 inc VAT.
| Seat | Bolt pattern | Waist | Height | Weight | Price inc VAT |
|---|---|---|---|---|---|
| Corbeau PSR | Both | Not published | Not published | Not published | £558 a pair |
| Cobra Daytona | 291 x 330 | 32 to 38in | All heights | 13.5kg | From £599 |
| Cobra Le Mans | 291 x 330 | 32 to 38in | All heights | Not published | From £619 |
| Le Mans Carbon Edition | 291 x 330 | 32 to 38in | All heights | Not published | From £714 |
| Cobra Misano Anniversary | 291 x 330 | 32 to 38in | All heights | 11.5kg | From £1649 |
Prices include VAT and were correct on 13 September 2026. Where a figure says not published, the manufacturer does not provide it and we will not guess it. If you are on a boundary for any of the Cobra seats, contact us with your measurements before ordering.
Yes. The Cobra H-frame adaptor bars (14306) are listed for the Mazda MX-5 H Frame, which covers both the Mk1 NA (1989 to 1997) and Mk2 NB (1998 to 2005). Both generations use the H-shaped floor frame. If your car has had floor work or the H-frame has been removed, check before ordering.
No. The adaptor bars bolt onto the existing H-frame, and the H-frame itself provides the sliding movement. The factory forward and back adjustment carries over to the new seat. You do not need a separate runner kit, and adding one is not part of this fitment route.
No. Cobra adaptor bars accept the 291mm x 330mm Cobra bolt pattern. Sparco recliners use a different pattern (345mm x 271mm), so a standard Sparco seat will not bolt to these bars. The Corbeau PSR is the only non-Cobra seat confirmed to work here, because Corbeau drill it for both patterns. If you have a seat in mind that is not in this guide, contact us before you buy and we will check the bolt pattern.
The adaptor bars bolt to the top of the existing H-frame and rely on it for the seat's rigidity and for the sliding function. If the H-frame is bent, corroded or damaged, the adaptors will not sit flat and the seat will not be secure. Inspect the H-frame before you order. If there is any doubt, contact us and we can advise whether an alternative mounting solution exists for your car.
Every seat in this guide is listed by the manufacturer as 4 point harness compatible, with belt slots in the backrest. Fitting a harness on a road car brings additional requirements: a harness-compatible seat, the correct eyebolts or harness bar, and proper lap belt anchorage. If you are planning harnesses, mention it when you order and we will make sure the whole setup works together before anything goes in the car.
The Corbeau PSR is the seat to start with if you want the decision already made. There is a full fitting guide for this exact combination on an MX-5 already on the site, the pair price covers both sides of the car in one order, and you know before you buy that it works. That is worth something on a conversion where the frame route is the unusual one.
For a single seat on the Cobra route, the Daytona. The bolsters are deeper than anything else at that price and the Signature range means you can have it in whatever trim fits the car. The Le Mans is the right call if the MX-5 also covers long distances or touring runs: less aggressive than the Daytona, better over time in the base. The Carbon Edition is the Le Mans with a lighter shell for owners where the weight saving is a real number, not a marketing one. And the Misano Anniversary is the best seat in this guide. There is not a more honest way to put it.
Cameron works out which of these suits a specific car and driver, one conversation at a time. If you are between two seats or not sure which way to go on this car, call 0115 9893488 and we will talk it through before you spend anything.
The five reclining sport seats we recommend for the Mazda MX-5 Mk1 NA and Mk2 NB, with a full guide to the Cobra H-frame adaptor bars that bolt to the car’s existing floor frame and preserve the factory sliding adjustment.
A customer asked about Recaro Sportster CS seats for a 1990 Porsche 964 C2. The seat is drilled 405mm by 290mm and the Cobra 964 subframe is drilled to Cobra’s own 291mm by 330mm, so here is the Planted Technology setup we recommend and what it costs per seat.
Corbeau Sportline RRS Tartan Edition seats in a Polo 6C: yes, on the Corbeau or the OMP Mk5 frame, because the 6C is the facelifted 6R on the same floor. The two frames, the per-seat pricing, and the one thing the seat will not do.
No, FIA 8855-1999 does not expire at the end of 2026. The FIA says the standard is not being withdrawn, and its current list shows seats manufactured into 2029 and valid into 2034. Here is what the date on your seat label really means, and when it matters.
What to do when your seat is a brand we do not stock: the two measurements that settle it, the patterns to compare them against, and why we will point you at another maker’s bracket if that is the right answer.
The five reclining sport seats we rate for the Land Rover Series 3, with the single Cobra direct-fit subframe route that picks up the factory floor mounting points on all years, runner included.
