The FIA standard requires the seat to be mounted using 5mm thick aluminium brackets, bolted into place with ISO 8.8 bolts. Seats are required to have plates of specific dimension engineered into the seat for fixing. Surprisingly, there is however, no requirement for the seat bracket to match this plate size on the outside of the seat.

Testing has shown us that enormous loads go onto all mounting hardware - and at relatively low decelerations. These loads will bend brackets and pull captive nuts through 3mm steel. In the field we have seen 50mm x 6mm steel plate bend in shoulder mounts.

The new Mid height seat mount model from OMP, finished in 6mm aluminium and now featuring even more adjustability, with more mounting holes. The slotted hole spacings allowing for increased front to rear differenciation and inclination upto around 21° and an overall bracket length of 400mm.