Cobra Seat Fitting Guide


How to fit Base Mounted Seats

Cobra seats are either “base mounted” or “side mounted”. This simply means that they either have holes in the bottom of the seat for fixings to be attached to, or holes in the side for fixings to be attached to. We’re going to start by talking about how to fit a base mounted seat.

Base mounted seats are typically recliners or they are fixed back seats from our range for classic cars. These seats have four holes in their base - one in each corner. On a Cobra Seat these holes are spaced at 290mm side-to-side and 330mm from front-to-back.

A base mounted seat can be fitted to a car in one of two ways. The first way of fitting them is to fix them to a tailored sub frame. Sub frames are designed for a specific vehicle. They use the vehicle’s original bolt points without the need for any additional modifications. You can simply fit the sub frame to your car, and fix the base mounted seat directly to the sub frame. In the majority of cases a sub frame will include runners that will allow you to move the seat backwards and forwards.

Cobra offer a small range of tailored subf rames for popular vehicles. You can view the range here. It is worth noting that Corbeau also offer a range that covers some other vehicles - the bolt pattern for the seats is the same for Cobra and Corbeau, therefore these sub frames are also suitable for Cobra Seats.

The other way of fitting base mounted seats to your car is to fix them to a set of runners. Runners will fit directly to your base mounted seat, and will allow you to move the seat backwards and forwards however they are not tailored made for a specific vehicle, so some modifications are likely to be required in order to fit them to your car. In a lot of cases, especially for classic cars where the seats tend to sit very low to the ground, the runners can be fixed directly to the floor of the car. If additional height is required then a box or framework of some description will need to be fabricated that can be securely fixed to the floor of the car and the seat runners.

We offer Cobra Seat Runners in two profiles; normal and premium, low profile. The normal profile are 28mm high. The premium, low profile runners are 24.5mm high and offer a slightly improved, smoother motion.

How to fit Side Mounted Seats

Side mounted seats, as the name suggests, are fitted to your car using side mounts that fix to holes in the side of the seat. Side mounts are bolted to the holes in the side of the seats, they are then bolted to the floor underneath the seat (i.e. the side mount wraps inwards, under the seat at a 90 degree angle). All competition seats are fitted to vehicles in this way - if you require FIA Approval then the seat must be side mounted, and it must fix directly to the floor of the vehicle. 

We offer a range of different side mounts. Our Cobra Steel Side Mounts are available in “low profile”, “low profile for GT Width Seats” and “L Shaped”. The low profile for GT Width Seats” option is designed for use with the wider GT Width Cobra Motorsport Seats. The “L Shaped” side mounts are designed for situations where space is restricted and you need the side mounts to be as narrow as possible.

We can also offer Alloy Cobra Side Mounts and Polished Stainless Steel Cobra Side Mounts, in order to help you to achieve maximum weight savings and the look you want for your car. All of the Cobra Side Mounts we offer are FIA Approved.

It is becoming increasingly popular for people to fit bucket and competition seats to their road cars. When this is the case most customers want the facility to move the seat backwards and forwards. Side mounts can be fitted to sub frames or runners using adaption bars. When fitting these we would recommend that you make sure you have calculated the height of the seat as a sub frame plus side mounts can lead to the seat sitting higher than you would ideally like it to. If you are interested in doing this, please contact us and we will make sure we provide all of the information required. Please note that if the car is for competition use it cannot be fitted to runners; the side mounts must be fitted directly to the floor.

How to fit Harnesses and Seat Belts

Harnesses should be fitted to the vehicle’s existing seat belt mounting points whenever possible. The lap straps should utilise the mounting point usually used for the front seat's lap strap. The shoulder straps should utilise the rear seat's lap strap mounting points, which are most directly behind the front seat.

From the shoulder straps to the anchorage point at the back of the car you are looking to achieve a 45 degree angle (when viewed from the side).

The harness should be anchored directly to mounting points on the vehicle. They should never be mounted to the seat itself. If for some reason it is not possible to fit the harness to the existing mounting points, then new anchorage points must be installed on the shell or the chassis of the vehicle. For the shoulder straps these points must be as near as possible to the centre line of the rear wheels. Shoulder straps can also be fixed to the rollcage or a reinforcement bar by means of a loop.

Once in position, you need to ensure that the harness is not in contact with any sharp edges that could cut or chafe the webbing of the harness.

For more detailed information on the installation and use of different types of harness please use the links shown below:

For road cars, especially recliners, you will probably want to continue using seat belts rather than a harness with your new Cobra Seats. This is quite straightforward - seat belt pretensioners should simply be attached to the seats framework.