Originally Posted by ILC32
Of course lighter weight benefits handling.
Bigger rotors and calipers weigh more than smaller rotors and calipers.
Please provide support for your assertion that a BBK weighs less than the stock setup.
Two piece rotor with aluminum hat weighs less than one piece cast rotor. Four piston StopTech or Brembo ST40/F40 caliper weight less than stock caliper. Look up the respective weights of both on the web and you will see significant savings in weight by going with a similar sized BBK.