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Endurance Sparco Compatible Premium Track Day Runner

£90.00 Incl. VAT

Endurance Sparco Compatible Premium Track Day Runner by Endurance Motorsport. Brand: Endurance Motorsport.

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SKU: Endurance-slide-Sparco-345 Categories: ,
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The Endurance Sparco Compatible Premium Track Day Runner (part Endurance-slide-Sparco-345) is a seat slider assembly built around Sparco’s 345mm bolt spacing pattern. Sparco competition seats use a narrower bottom pitch than most other FIA seats, and fitting a standard runner under one means drilling or shimming rather than a direct fit. This runner avoids that: it is machined to match Sparco’s holes so the seat locates cleanly.

At £75 it sits just below the Recaro-specific runner in price, and above the universal kit. The “premium” label reflects the heavier-duty rail construction compared to the standard Endurance-slide-1. This one is intended for track day use rather than light road runs, with a runner rated for the repeated loading of circuit driving.

Sparco seats commonly paired with this runner include the R100, Sprint, and SPX family where the side mount is fitted above and the runner provides the fore-aft travel. The runner slots between the base mount and the seat shell: subframe or floor adapter first, then this slider, then the seat. Sparco side mounts bolt to the seat shell; the runner is independent of the side mount hardware.

If your Sparco seat has been fitted without runners previously and you want to add adjustment, check the seat’s bottom bolt position and confirm 345mm centres before ordering. Some Sparco models deviate from the standard pitch. If in doubt, measure the holes in the seat base before buying.

Additional information

Brand

Seat runner and slider guide

Sliding runners let you move a fixed back bucket seat forwards and backwards. There is one thing everybody gets wrong about them, and it is worth clearing up before you look at the range.

The millimetres are the handle width, not the travelA 405 mm runner does not move further than a 291 mm runner. Every runner here gives the same fore and aft adjustment. The figure in the title is the width of the handle bar that spans underneath the seat, and you pick it to match the width of the shell you are fitting. All three Corbeau options are the same price, which is the giveaway.

Match the handle width to the seat

Measure across the underside of your seat between the two mounting rails, or check the seat width the manufacturer quotes. Then pick the runner whose handle spans it.

Handle width Sold as What it suits
290 mm Retro and Sportline Narrow shells and classic seats
291 mm Cobra, Corbeau The common narrow option
320 mm Motorsport STD Standard width bucket seats
345 mm Corbeau A step up from standard
370 mm Motorsport L Wider shells
405 mm Motorsport XL, Cobra, Corbeau The widest we stock

If you are between two, go by the seat rather than by preference. A handle that is too narrow will not reach the rails and one that is too wide will foul the tunnel or the sill.

Runners made for a specific seat

Some kits are built for one shell rather than sold by width. If your seat is on this list, that kit is the easier answer.

Brand Seats Notes
Tillett B5, B8, B9 Runner kits made for those shells
Recaro Pro Racer SPA and SPG, standard and XL Two widths, matched to the shell
Sparco P1300GT and P1300GT LW Base mount kit, quotes a seat width
Cobra Nogaro Sliding fitting kit for that seat
Endurance Sparco and Recaro compatible Aftermarket kits to suit those shells
Check the fixing type firstThe Sparco and Endurance runner kits are written for base mounted seats and quote a seat width rather than a handle width. A side mount seat needs side mounts and a subframe, not a base runner. Read our seat mounting and fixing points guide if you are not sure which yours is.

What a runner costs you

Height

A runner sits between the seat and the subframe, so it lifts you. In a car with a cage and a helmet that is the first thing to check, because the few centimetres it adds is exactly the amount you did not have spare. If you are tall, work out your headroom before you commit to running sliders at all.

Rigidity

A fixed seat bolted straight to a subframe is the stiffest way to mount it. A runner adds a moving joint. It is entirely normal for road and track day use, and it is why a lot of competition cars do without.

Sharing the car

The obvious reason to fit them. If two drivers use the car, or you drive it to the circuit and someone else drives it home, runners are worth the height and the weight. If it is your car and only yours, bolting the seat where you want it is simpler and lower.

Tell us the seat and we will match the runnerThe seat make and model, and whether it is side mount or base mount. The handle width has to match the shell and it is quicker for us to check than for you to measure it twice. Call 0115 989 3488 or email Sales@GSMPerformance.co.uk.

Widths and compatibility read from our own product data, checked 2 August 2026. All runners in this range give the same fore and aft adjustment.

Have you written anything about this exact product?
Yes, we have covered this exact product: The New BMW M2 CS (G87) Is Sure To Be A Track Day Success, and Sparco Track Day Bucket Seats Arrive In-Store. That is first-hand coverage from our own builds and showroom, not brochure copy.

Will this fit my car?
This frame is car-specific, so match the vehicle in the product name to your exact car and generation. If you are unsure, send us the registration and we will confirm before you order.

Which seats does it take?
Check the bolt pattern in the specification against your seat. If your seat is not listed, tell us what you run and we will confirm the fit.

Do I keep fore-and-aft adjustment?
Only with a sliding runner between the frame and the seat, which is a separate part on Endurance frames. If more than one person drives the car, budget for the runner. Our guide to sliding runners explains the options and widths.

Availability

Endurance deliveries arrive monthly

Endurance produce in batches and we take a delivery each month, so the popular models are generally available for immediate dispatch.

Colour makes a real difference here. A standard colour is usually on the shelf; a less common one can run to a few weeks.

If you have a date

Tell us the model and the colour when you ask and we will confirm the position before you order.

Endurance MotorsportBucket Seat

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:

Book now!

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.

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Choose Klarna at checkout and pick the plan that suits you. The options and amounts for this product are shown below.

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

  1. 1Add the product to your basket and go to checkout as normal.
  2. 2Select Klarna as your payment method and choose your plan. Klarna gives you a decision in seconds.
  3. 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.

ParcelForce

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.

Guides and advice

GuideThe New BMW M2 CS (G87) Is Sure To Be A Track Day Success
GuideSparco Track Day Bucket Seats Arrive In-Store
GuideThe complete guide to universal seat sliding runners
GuideBase Mount Or Side Mount? The Bucket Seat Fitting Stack Explained

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