Abstract: Bicycle disc brake rotors of the present invention are lightweight, have relatively high coefficients of friction to maintain braking friction under heavy braking, and quickly shed heat. The parts may preferably be made from a compound having carbon fiber and/or a refractory material, such as ceramic filler, within a polycarbosilane polymer resin, the polymer resin having a silicon-oxygen polymer backbone, producing silicon oxycarbides upon pyrolysis. Methods of making and using the same are further provided.