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Front rotor for one non CCB is 565 at ecs and 3600 for the ccb equivalent. Do the math. If you plan on tracking the car you're better off financially without the ccb since it's unlikely that the ccb rotor will last longer than 7 non ccb rotors. If you are street only you are also better off financially without since it's unlikely that you'll have to replace your rotors enough times to offset the $8150 cost of the option. Bottom line is that they are great technology but at current price points hard to justify other than that they bring lower unsprung weight.
As an aside, my buddy with a Porsche and factory ccb replaced them with non ccb as he tracks his car a lot and couldn't rationalize the cost.
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'07 Z4MR '22 GT4 '18 GT3 '16 GT4, '16 M2, '14 X1, '13 135is, '06 330i, '03 323 Ci, '01 330i, '99 M3 (RIP), '96 318is, some non-BMWs
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