Customer Car: Porsche 997 Fitted With OMP RT Seats
Customer cars, July 2025
Our customer has sent us photos of their Porsche 997 with a pair of OMP RT bucket seats fitted. The seats sit on Endurance Motorsport multi-point side mounts, on Planted Technology frames made for the 997, and the finished interior looks right at home in the car.
It is a good example of a road and track setup done properly: an FIA-approved seat, fitting parts made for the job, and the factory seat belts kept for the road. Here is what went into it and why each part was chosen.
- Car: Porsche 997 Carrera, road and track use
- Seats: a pair of OMP RT, FIA 8855-1999, side mount
- Side mounts: Endurance Motorsport multi-point M8 brackets
- Frames: Planted Technology brackets for the 997
- Factory seat belts kept, using the buckle mount on the Planted frame
What is on this page
The car and the brief
The 997 is a car people use on the road and take on track, and that shaped this build. Our customer wanted a proper fixed-back competition seat that holds them on a circuit, but they also wanted to keep the factory seat belts so the car stays easy to use on the road.
The answer was an OMP RT on each side, mounted with multi-point side mounts on Planted Technology frames that carry a mount for the factory belt buckle. Everything bolts to the car’s own seat mounting points, with no drilling or fabrication in the floor.
The OMP RT
The OMP RT (part number HA0-0831-A01) is an FIA 8855-1999 homologated fixed-back seat that OMP describe as street friendly. The bolsters hold you well without being so tall that you have to climb over them to get in, and the shape is less extreme than seats built purely for circuit use. That makes it easier to live with in a car you drive on the road.
It comes with a carbon or fibreglass shell. Both carry the same FIA homologation. The carbon shell is around 5.2kg and the fibreglass is roughly twice that, so the choice is about weight and stiffness, not approval. On a road car or a club car the fibreglass is the sensible buy; in a series where weight really counts, the carbon starts to make sense.
| OMP RT | Detail |
|---|---|
| Approval | FIA 8855-1999 |
| Shell | Carbon (around 5.2kg) or fibreglass |
| Trim | Leather, or Alcantara and leather |
| Mounting | Side mount at 290mm lateral spacing |
| Harness | Four and six-point compatible, head and neck restraint friendly |
| Sizing | 32 to 36 inch waist, drivers under six feet |
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Our customer's setup
The seats are mounted on Endurance Motorsport multi-point M8 side mounts. Each bracket has several rows of holes, so the seat can be moved up or down and tilted until the driving position is right. That is useful in a 911, where the seating position is low and set back and the roof line leaves little room above your head.
Underneath, the side mounts bolt to Planted Technology brackets made for the 997. They bolt to the car's standard seat mounting points, so the original seats can go back in if the car is ever returned to standard.
Keeping the factory belts was a key part of the brief. The Planted frame includes a mount for the factory belt buckle, so the buckle moves across to the new frame and the standard three-point belt still works with the new seat. The car also runs a roll cage, which you can see behind the seats in the photos.
Planted Technology frames for the 997
Planted make one bracket design for the water-cooled Porsches, because Porsche kept a common seat mounting arrangement across the 996, Boxster, 997, Cayman and 991. We list the 997 version on its own page so it is easy to find, and it is the same bracket.
The Planted frame is drilled for the common aftermarket seat patterns, which is why it works with so many seats, and it carries a mount for the factory belt buckle. For a road car that keeps its standard belts, it is the frame we point people to first. Tell us the model year and we will confirm the part.
The competition alternative
For a car built purely for competition, OMP make a direct fit frame for the 996 and 997. It is steel and drilled with two patterns, and it does not carry a mount for the factory belt buckle, because it is designed to be used with a full harness.
Seat height matters more in a 911 than in most cars. The seating position is already low and rearward, and the roof slopes away behind you, so a seat that sits too tall becomes a problem quickly. Tell us your height and the seat you want before ordering, and we will check the combination.
Why a setup like this works
This build balances road use and track use well. The FIA seat and adjustable side mounts give the support and driving position you want on a circuit, and the Planted frames keep the factory belts working for everyday driving. Because each part is made for the job, the installation is solid and nothing in the car has been cut.
If you are thinking about a recliner for your 997 instead, our top five reclining seats for the Porsche 997 covers those. For how the seat, side mounts and frame fit together, see our guide to base mount or side mount.
Checking the fit
The OMP RT is sized for drivers with a 32 to 36 inch waist and under six feet, and it sits comfortably in the 997 cabin without fouling the door or the centre console, as the photos show. Garreth’s advice is still to check both the seat and the car before ordering: send us your height and waist, or come and sit in one, and we will help you compare it with other seats.
If the car is used in competition, check the seat, mounts and any harness with your scrutineer before the event. FIA seats also carry a manufacture date, so ask us for the date on current stock if your series has rules about it.
Is the OMP RT FIA approved?
Yes. It is homologated to FIA 8855-1999, in both the carbon and fibreglass versions.
Can I keep my factory seat belts in a 997 with bucket seats?
Yes, with a frame that carries the factory belt buckle, such as the Planted Technology 997 bracket used in this car.
Does the OMP 997 frame take the factory belt?
No. The OMP frame has no mount for the factory belt buckle, as it is designed for use with a harness.
How is the OMP RT mounted?
It is side mounted at 290mm lateral spacing, so it needs approved side mounts on a frame for your car.
Who does the OMP RT fit?
OMP size it for drivers with a 32 to 36 inch waist and under six feet tall.
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Road and trackOMP RT on Planted frames
An FIA seat with the factory belts kept, all bolted to the car's own mounting points.
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