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5. “Floating” Disc Mounting System with Billet Aluminium Hat: Reduce
“Unsprung Weight” for better handling and reduces heat-related
stress; increases brake performance and pedal feel.
Do you have any further information on the weight savings for the various units vs the stock IS350 brakes?
But you can save A LOT of weight from going to a full aluminum brake caliper and 2 piece rotor. The stock brakes are all iron and weight A TON. The best part is your saving unsprung weight AND rotational mass.