Originally Posted by swamp2

+1. Other weight savings details like hollow camshafts, thermoplastic composite bumper carriers, thin wall headers, hollow sway bars, aluminum shocks, etc. They did not really achieve a fantastic weight but they did put in a huge effort. It is going to be really hard to shave off 300 more pounds.

Also e36jakeo: high performance auto brakes are carbon-carbon (only very high end, like F1) or ceramic composite (meaning ceramic rotor and metallic hat), not carbon ceramic.