Hundreds Of Products Ready Today. Dispatch/Collection Sim-Lab Seat Upgrades: Seats And Brackets For The GT1 Evo, GT1 Pro, P1X And X1 Pro
Sim rig fitting guide, Sim-Lab cockpits
One email in this pile asked it perfectly: will a bucket seat fit a Sim-Lab GT1 Evo without any further modifications? Another had a P1X on order and a Sparco GP waiting for it. A third just wanted a slider for a P1 that did not creak. Sim-Lab owners do their homework, so this page answers the whole set properly.
The happy headline: every cockpit Sim-Lab make is an aluminium profile rig, and on a profile rig the seat rails move to suit the seat. There is no wrong Sim-Lab to own. What is left to decide is the seat itself and whose brackets join the two, and that is where the rest of this page earns its keep.
- Every current Sim-Lab is an aluminium profile rig: the seat rails adjust, so almost any motorsport seat fits
- The whole range shares the 40 series seat rail, which is why one set of brackets covers it
- Fixed back shells side mount through four M8 bolts at 290mm, and steel brackets start at £31.80
- The recliner route on runners starts at £360.00 all in, and runs to a carbon Sparco SPX
- Got the pre-2023 P1X? Our dedicated fitment guide for that chassis is already live
The range in one table
Sim-Lab’s cockpits step up in profile size and rigidity, but the seat story barely changes across them, and that is the point of this table. The seat rails are the same 40 series extrusion family from the entry rig to the flagship, so the seat and brackets you choose today move with you when the rig gets upgraded.
| Cockpit | Place in the range | Seat situation |
|---|---|---|
| GT1 Evo | The entry point, and the one we are asked about most | Seat bolts in the box, brackets and slider optional |
| GT1 Pro | The step up in profile and stiffness | Same seat rail story as the Evo |
| P1X Pro | 160x40 base, 120x40 uprights, 40x40 seat rails | Seat rails take side mounts or runners directly |
| P1X Ultimate | The P1X Pro specced to the hilt | Same seat rails as the Pro |
| X1 Pro and AMG F1 edition | The top of the range | Same bracket interface, see below |
| P1X, pre-2023 chassis | The original, thousands still racing | Covered by our dedicated P1X fitment guide |
Range facts from Sim-Lab’s own pages and manuals plus the P1X Pro press reviews, checked August 2026.
Own the original P1X? Head straight to our Sim-Lab P1X bucket seat fitment guide: it carries that chassis’s 500mm rail spacing, the per-seat width table and the bracket picks verified against it. Everything below still applies to the seats themselves.
The two ways a seat goes on
The two routes, drawn end on and not to scale. Route A bolts steel side mounts to the rails and the shell to the mounts. Route B bolts sliding runners flat across the rails and a reclining seat on top. Every current Sim-Lab takes both.
Route A is the fixed back shell on steel side mounts, the one the GT1 Evo email was really asking about, and the answer to that email is yes: no modifications, no drilling, T-nuts in the rail slots and an hour with a hex key. Route B keeps a recliner on sliding runners for the household rig where three people drive and everyone wants their own distance from the pedals. Cameron’s counter rule is unchanged: one driver, route A. Shared rig, route B.
The interface both bracket routes end at: two M8 holes each side of the shell, 290mm apart front to back. Sim-Lab’s own bracket set and our steel mounts all bolt to this same pattern.
Their brackets or ours, honestly
Sim-Lab sell their own Bucket Seat Bracket Set, 4mm aluminium plates with the M8 hardware in the bag, sized for their 40 series rails, and they list a Sparco slider and S1 Enduro seats with brackets included. It is proper kit and if you already own it, it does this job.
Our brackets do the same job in steel. The QMS universal mounts are £31.80, the Endurance multi point set from £46.80 adds hole positions for seat height and reach, and the Sparco FIA long side mounts at £58.74 carry the longest slots of the three. All three are drilled for the 290mm M8 pattern in the diagram, and when the seat comes from us the brackets arrive in the same box, checked against the shell before anything ships.
-
From £39.00 Excl. VATPayPal CreditSelect options This product has multiple variants. The options may be chosen on the product page
Pick the seat by your build, then set the rails to it
The Sparco QRT sim range exists for exactly this build: the same shells as the FIA versions without the homologation paperwork a rig never needs, at a useful saving. The size bands below are the ones from our published sim seat tables, and one of them almost certainly describes you.
| Seat | Best for | Weight | Price inc VAT |
|---|---|---|---|
| Sparco Grid Q QRT | Under 6ft, 32 to 36in waist | 6.5kg | £396.00 |
| Sparco Rev QRT (FIA) | All heights, 32 to 36in waist | 7.1kg | £414.00 |
| Sparco Pro ADV QRT | Over 6ft, 32 to 36in waist, head support | 9.3kg | £492.00 |
| Sparco Evo XL QRT | Over 6ft, 36 to 40in waist | 6.8kg | £525.60 |
| Sparco QRT-R | All heights, 32 to 36in waist | 7.1kg | £618.00 |
| Mirco RTX-7 3D (FIA) | Up to 190cm and 95kg, removable pads | 9kg | from £418.80 |
| Sparco GP | Under 6ft, formula driving position | n/a | from £564.00 |
Size bands from our published sim seat tables, weights are manufacturer figures where stated. Between bands, ring 0115 9893488 and Cameron will check the shell measurements against you before anything is picked.
The email with the Sparco GP and the P1X deserves its answer here: the GP is the formula-position pick and it is happy on a P1X, but it mounts through its own Sparco steel side mounts at £63.60, not the universal brackets above, so order the pair together. The QRT-R remains the seat Garreth calls the keeper for long stints, and the Mirco RTX-7 is the big-value FIA shell that one of our customers put on his own profile rig within 48 hours of sitting in it.
-
From £349.00 Excl. VATPayPal Credit250+ coloursKlarna ReadySelect options This product has multiple variants. The options may be chosen on the product page
-
From £470.00 Excl. VATPayPal CreditKlarna ReadySelect options This product has multiple variants. The options may be chosen on the product page
The recliner route for shared rigs
The value route is unchanged from every rig we fit: a Sparco R100 at £282.00 on the twin runner kit at £78.00, £360.00 all in, with a backrest that tips and travel for every driver in the house. The R500 at £328.99 adds a deeper bolster to the same idea.
For the setup where only the most premium recliner will do, the same two seats top this row as on every rig we write about, because nothing else touches them. The Sparco SPR at £1,858.94 is a recline mechanism on a moulded fibreglass shell, bucket support that still folds. The SPX from £2,815.79 is the first carbon fibre recliner Sparco sold to the public, Italian leather with an Alcantara centre, around 12kg, and on a flagship X1 Pro build it is the seat Garreth would spec without blinking. All four recliners carry Sparco’s 345mm x 271mm base pattern, so the same runners fit under any of them.
-
From £235.00 Excl. VATPayPal CreditSelect options This product has multiple variants. The options may be chosen on the product page
-
From £2,346.49 Excl. VATPayPal CreditKlarna ReadySelect options This product has multiple variants. The options may be chosen on the product page
What the routes cost
| Route | Parts | Total inc VAT |
|---|---|---|
| Shared rig on a budget | Sparco R100 £282.00 + twin runner kit £78.00 | £360.00 |
| The all-rounder | Sparco Grid Q £396.00 + QMS side mounts £31.80 | £427.80 |
| The tall order | Sparco Evo XL £525.60 + Endurance mounts £46.80 | £572.40 |
| Add £78.00 for runners under a side mounted shell if the rig is shared | ||
Prices include VAT, checked 24 August 2026, everything in stock on the day. T-nuts and M8 hardware come with the brackets we sell.
Undecided between two shells? The sim seat row stands on the showroom floor in Nottingham and settles it in ten minutes. Ring first on 0115 9893488 and the row is yours for as long as it takes, and if the rig is coming with you in the boot, even better.
Common questions
Will a bucket seat fit my GT1 Evo without any modifications?
Yes, and this exact question is why the page exists. Set the seat rails to the width of the shell, drop T-nuts into the top slots, bolt the side mounts down and the shell to the mounts. No drilling, no cutting, and the rig goes back to standard with the same hex key.
I have the pre-2023 P1X. Does this page apply?
Mostly, but you have something better: our dedicated Sim-Lab P1X fitment guide covers that chassis with its 500mm rail spacing and a per-seat width table. The brackets and seats on this page are the same, the rail figures there are specific to your rig.
Should I buy Sim-Lab’s bracket set or yours?
If you already own theirs, use it, it does the job. Buying fresh, ours are steel, they start at £31.80 against their aluminium set, and they ship in the same box as the seat with the pattern checked before dispatch. Either way the interface is the same four M8 bolts at 290mm.
Do I need the FIA version of a seat for sim racing?
No. The sim versions of the Sparco QRT shells are the same shapes without the homologation, at a saving. An out-of-date FIA seat is also a perfectly good sim seat, so it is always worth asking what ex-display or date-expired stock we have before paying full FIA money for a rig seat.
Which slider actually fits a Sim-Lab?
Any of our universal runners bolt across the 40 series rails with T-nuts. The Sparco twin kit covers two seats for £78.00 and the Endurance premium runner at £90.00 is the heavier single. Our sliding runner guide walks the whole subject if you want the long read.
My seat is bigger than the rails are set for. Problem?
No, that is the whole trick of a profile rig: loosen the rail bolts, slide the rails out to the shell’s width, retorque. The width the rails need for each Sparco shell is in the P1X guide’s table and Cameron will confirm it against your seat before it ships.
Which Sim-Lab, how tall and how broad the main driver is, and the number to stay under: that is everything Cameron needs to put the right shell and the right brackets in one box. Ring 0115 9893488 or come and sit in the row in Nottingham. The GT1 Evo email that opens this page ended exactly that way, with a shell on the rails the same weekend.