[s-cars] Making the Disc Brakes harder and stronger

[Frederic L'Huillier]

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Hi,

Is it correct that putting the Disc Brakes into liquid nitrogen is
making them a lot harder than stock ones ?
If so, how long do you have to keep them in the liquid nitrogen to get
the full benefit ?
Can you do it with used brakes or only new ones ?

Regards,
Frederic.
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