A closer look at a stock item: the rotor inside the rear brake disc is essentially a heat sink, to capture heat from the aluminum and steel rear brake system before it tries to merge with the magnesium wheel, which expands at a different rate. The race bike won't need it, because its wheels use magnesium carriers for the brake and the cush drive.
Anyone else notice the juicy brembos on that puppy, along with the front OZ wheel? The rear is still stock from the picture it seems....
I wonder if they are forged alum or mag OZ's...my guess is forged alum...
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