Flyin' Miata steering rack bushing upgrade kit, NB

Your NB's steering rack is bolted to your car's subframe by using rubber bushings to isolate the rack from the chassis. You would think this is for NVH (noise, vibration, harshness) reasons, but the ND is actually solid mounted. Make your NB more like the ND by getting rid of that slop and bolting your steering rack straight to your subframe. This will make your steering even sharper than it already is and is an excellent complement to chassis stiffening and improved suspension bushings. The driver's side bushings are made out of Delrin, so they're even stiffer than the poly bushings available elsewhere, but with no noticeable NVH penalties. The passenger side bushing is printed on our Markforged printers out of Onyx material. Not only is Onyx strong, but it's also highly resistant to chemicals such as oil and gasoline.

Easy install - remove the stock bushings by pressing or hammering them out, push the new ones in (no special tools needed), and bolt it back together. You shouldn't need a new alignment, but there's an outside possibility that the steering wheel could be slightly off-center.