Important Note: Blister skied the Core 12 without the Freeride Spacer. They wondered if the downhill performance would be even better with the Freeride Spacer. It would. The Freeride Spacer eliminates the gap between the sole of the boot and the top-sheet of the ski/binding, as well as reducing the stress on the boot/binding interface by directly transferring force to the ski. The torsional and vertical movements (“slop”) common to tech bindings, which the Core 12 Rotational Cam System® heel makes so minute as to be almost imperceptible, are entirely eliminated with the spacer — particularly noticeable and appreciated during larger impact loads.