Brake discs ! As with the traditional well-known blacksmith’s art of the known Samuraic values for centuries … ..soooo the brake discs of the 323 F were manufactured !!!! Due to many folds of the excellent steel and this traditional blacksmith’s art excellent brake discs in the production … the approx. 27tkm … I emphasize 27 000 km ! ! ! hold see the photo !!!!!!!! No ,no all nonsense since the Japse … one knows their geological problems (vulcanis Here, too, the brake discs are natural made of basalt-like with metal-vaporated volcanic ash. In any case, you can choose a possibility.