We present the first case of a highly collimated, extremely high velocity bipolar outflow in Taurus. It is powered by the low-luminosity (0.4 solar luminosity) source IRAS 04166+2706 and contains gas accelerated up to 50 km s~(-1) with respect to the ambient cloud. At these highest velocities, the outflow collimation factor exceeds 20, and the gas displays a very high degree of spatial symmetry. This very fast gas presents multiple maxima, and most likely arises from the acceleration of ambient material by a time-variable jet-like stellar wind. When scaled for luminosity, the outflow parameters of IRAS 04166 are comparable to those of other extremely high velocity outflows, like L1448, indicating that even the very quiescent star-formation mode of Taurus produces objects capable of powering very high energy flows (L_(mec)/L_* > 0.15).
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