Miata cockpit upgrades for performance & track. You have an upgraded motor, a set of performance shocks, upgraded pads - then you go to the track. You have put in many, many hours and once you have oil, tire, and driver brain temperature where it needs to be, you realize those factory Miata seats are awful on track. Also, your arms are extended too far and you are turning with wrist and elbow. This category is where we find the correct seat, seat bases, steering wheel hub adapters, and other Miata specific cockpit parts. Your Miata is a very good car, let's make it excellent.
Miata NA Chassis use part number SB109DR