OMP base mount to side mount conversion brackets. Part number HC660.
These bolt to the underside of a base mounted seat, and their 90 degree angle gives you a flat vertical face to bolt side mounts onto. In effect they turn a bottom mounted seat into a side mounted one.
Why anyone wants that
Adjustment, mostly. Multi hole side mounts give you a great deal of fore and aft movement and a choice of seat angle, and a base mounted seat gives you neither. If you have a seat you like and cannot get it sitting where you want it, this is the part that solves it.
Side mounting also usually gets you lower than base mounting, which matters if you are tall or in a helmet.
Not FIA approved
Stated plainly, because it decides whether you can use them. They are widely used in clubman events and track days. If your car is scrutineered against FIA seat mounting requirements, these are not the answer and we will point you elsewhere.
Ordering
One kit per seat, so two for a pair. Powder coated steel with fasteners, adjustable mounting holes.
Tell us the seat and we will confirm it suits before you order.






