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Old 07-05-2010, 01:09 PM   #9
sdharmani
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Join Date: Dec 2006
Location: DC
Posts: 73
cross drilled make the rotor lighter

OEMs cross drill to save weight ... cooling happens through the gap between the two sides of the rotor.

Quote:
Originally Posted by hvangeel
I thought the cross-drilled holes' purpose was to ventilate the brakes?
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