The genuine hub of a high power FF car that does sports driving with a genuine hub high grip tire with special parts induction hardened that was born from the endurance race participation is not strong enough, especially with regard to the front hub, it is always high because there are also drive wheels. At present, the service life is extremely short due to the load being applied and heat damage to the brakes. By applying induction hardening to the weak genuine hub and hardening it, it is possible to significantly increase the strength of the hub and to prevent damage due to lack of strength. In addition, the processing part and processing depth were fed back from the race actual experience. The strength shortage of the hub which was the weak point of the high power FF car is surely eliminated to do.
