In pursuit of higher stability

*The heat treatment stabilizes the bonds between the elements in the structure of the cast iron. This prevents disc distortion and strain which is common immediately after installing new discs.

*The treatment also optimizes the surface hardness, which improves brake response.

*Higher performance can be achieved by using the HD discs along with the Z type or R series pads.

*We recommend this disc for advanced drivers who require/want more braking stability.

*The heat treatment does not directly improve brake performance. The heat treatment increases the disc resistance against strains and thermal cracking. It also helps maintain stable brake performance for a extended period of time.

*The surface of the heat treated brake discs has a burnt colour. Once it is used, the burnt surface will be removed by the pad, and changes back to the colour of normal cast iron. Please be aware that the effect of the heat treatment of the disc will not disappear even if the surface colour changes.