

It was not at all unusual to have to check your heels every so often to make sure they were still in the right place on the track after a hard landing or two. They also had a forward pressure mechanism that was as bad, if not worse, than the original Pivot heel. They exploded and/or ripped off the track so often that I had any number of friends that just hoarded parts and frankenstein-ed their bindings together every time something new broke. The heels, being made almost entirely of plastic, broke incredibly easily. They retained some, but not all, of the rotating elasticity of the original Pivots, and the heel piece slid along a more traditional track, giving the new Pivots more BSL adjustment than the originals.

Some time in the late 90s/early 2000s Look tries to make a updated version of the Pivot heel that's a little cheaper and easier to adjust. They're awesome, especially for their time. Look creates the original Pivot heel and pairs it with an updated version of their innovative "Nevada" toe. The genesis of the Pivot and the SPX existing in the same line, to my recollection, happened like this:

As far as I know the SPX heel is the descendant of the old PX heel, which doesn't rotate.
