As Miatas age, the foam in their seats softens up. This can mean a drop in lateral support on the base as the outer bolster gets all floppy and pounded flat. Paco Motorsports has come through with a clever solution.
These bolster supports install in a few minutes using existing bolt holes. It adds some steel support to the bolster, giving it the strength it needs to hold you in place.
Sold in pairs (one for each seat), fits all factory NA and NB seats.