A self-centering hyperbolic trim assembly is provided for a recessed light fixture. The trim assembly includes a mixing chamber, a hyperbolic reflector and a reflector mounting assembly to mount the hyperbolic reflector without rigid attachment in an optic housing of the recessed light fixture. The mixing chamber is top mounted by its chamber holder portion over an LED light source in the optic housing. The mixing chamber has a light transmitting chamber body held within the chamber holder portion, whereby a space is formed between the chamber holder and the light transmitting chamber body. This space is sufficient to accept the free upper end of the hyperbolic reflector therein, thus creating a self-centering interference fit between the mixing chamber and the reflector, while protecting the LED light source, when the light fixture is assembled, thereby maintaining consistent light output and patterning.