A lot of aftermarket brake parts - such as Wilwood proportioning valves - come with NPT threads. They may come with easy-to-find NPT to SAE flare adapters - but the Miata uses metric flares. NPT to metric adapters are impossible to find so we've had these specially made. These allow you to install the Wilwood valve in your Miata without having to reflare the lines, making installation quick and easy.
Whenever these are needed to install one of our products, they are included. We simply list them separately because they're almost impossible to find, and you might have some interesting custom work going on. Popular with non-Miata installs, such as Datsun Z cars, Hondas and Toyotas.
The fittings are made of brass. The soft material deforms slightly on installation, giving a better seal on the flare and the pipe threads than a harder material like steel. The current version has a thicker wall thickness than before for increased strength, although care should be taken to avoid over-torquing upon installation. Included in our complete adjustable brake proportioning kit, but they can be used in a wide variety of applications.
Adapters have an M10x1.0 inverted flare female fitting and 1/8 NPT (1/8-27) male on the other.