Morgan Speedster (Plus 8) bucket seat guide
Plus 8
A Morgan is a traditional roadster rather than a seven style car, so the usual narrow-bulkhead argument matters less here. What does apply is the width and the height: the cockpit is tight, and the seat that fits is one of the narrowest supportive shells made.
- The Cobra Roadster 7 is confirmed with a Morgan Plus 8 specific listing, part number COBROAD7-MOR
- The Tillett B6 and B8 shells carry no car-specific claim and suit this cockpit
- Safety Devices and Custom Cages both offer roll cages confirmed for the Plus 8
- The Corbeau Le-Universal frame and Tillett STBI side mounts give generic fixing options
- Harnesses above 3-point need a roll cage or a properly engineered harness bar
What is on this page
Bucket seats
The Cobra Roadster 7 for the Morgan Plus 8 at £474.17 is one of the narrowest supportive shells made, which is what gets it into a Morgan cockpit.
The Tillett B6 at £793.80 is a compact lightweight shell for performance and track day use, civil enough to drive to the circuit in. The Tillett B8 at £959.49 sits alongside. Neither carries a car-specific claim, so both suit the Plus 8’s cockpit.
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Bucket seats for the Plus 8Which bucket seat for a Morgan Plus 8
The Cobra Roadster 7 for the Morgan Plus 8 at £474.17 is the sensible starting point, built specifically to solve this car's width and height constraints. If you want a proper Tillett shell without paying for FIA paperwork you will never need, the Tillett B6 at £793.80 holds you like a race seat while staying civil enough for the road.
Mounting
The Corbeau Le-Universal Frames at £180, the Cobra Premium Sliding Runners at £70, and the Tillett STBI Aluminium Side Mounts at £116 give generic fixing options for the seats above.
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Roll cages
The Safety Devices Rear Bolt-In Roll Cage at £484 is confirmed for the Plus 8 (2 seats) and the Plus 4 with T16 engine, which shares the Plus 8 chassis. It includes bushes for seat belt mounts and fits models with short door, long door, chrome inner door lock, Rover door lock, or inertia reels.
The Custom Cages International Multipoint T45 Roll Cage at £1087 is the step up for a Plus 8 built properly for competition, giving a stronger and more rigid car for road, track or full motorsport use.
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Roll cage for the Plus 8Which roll cage for a Morgan Plus 8
The Safety Devices Rear Bolt-In at £484 is the accessible option for harness mounting alone, confirmed for the Plus 8 and the T16-engined Plus 4 on the same chassis. For a Plus 8 built properly for competition, the Custom Cages International Multipoint T45 at £1087 gives a stronger, more rigid car for track or full motorsport use.
Harnesses
Harnesses need a roll cage or harness barA 4-point, 5-point or 6-point harness with separate shoulder straps needs proper attachment points above and behind the seat. Fit a roll cage or a properly engineered harness bar before using anything above a 3-point belt.
The TRS Clubman 3-point bolt-in at £80 and 4-point clip-in at £100 both use the standard seat belt anchor points and do not need a cage. For 4-point competition use, the TRS Magnum 4-point FIA at £205 and the Takata Drift II at £229 are the step up.
For 6-point harnesses, the cage goes in first. The TRS Magnum 6-point Superlite FIA at £245, the Takata Drift III at £270, and the Schroth Profi 3×2 at £370.01 all suit a caged Plus 8 going to competition or serious track days.
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What fits
Mounting for every part in this guide.
| Product | Fitment | Notes |
|---|---|---|
| Cobra Roadster 7 (Morgan Plus 8) | Built for this car | Part COBROAD7-MOR. |
| Tillett B6 / B8 | No car-specific claim | Generic fitting frame needed. |
| Safety Devices rear cage | Plus 8 and Plus 4 (T16, Plus 8 chassis) | Confirm door and lock type. |
| Custom Cages Multipoint T45 | Plus 8 |
Common questions
Is the Morgan Plus 8 seat the same as the seven-style Cobra Roadster 7?
It is the same underlying shell, but with a listing built specifically for the Morgan Plus 8, part COBROAD7-MOR, since the fitment logic differs, a Morgan is a traditional roadster rather than a seven style car.
Does the Safety Devices cage fit my door and lock type?
It is confirmed for short door, long door, chrome inner door lock, Rover door lock, or inertia reels. Check your car against these before ordering.
Can I run a 6-point harness without a roll cage?
No. A 6-point harness needs anchor points above and behind the seat for the shoulder straps. Fit a roll cage or a properly engineered harness bar first.
Does the cage fit the Plus 4 as well?
The Safety Devices cage is confirmed for the Plus 4 with the T16 engine specifically, which shares the Plus 8 chassis. Other Plus 4 variants need a different part, ask us to confirm.
More help
Confirm your Morgan’s door and lock type before ordering a roll cage. Cameron works through the seat, frame and roll cage combination together.
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