English: A pair of Salomon SX 92 Equipe rear-entry ski boots. The boot on the left is in the "open" position, the one on the right is shown "closed".

The SX series was Salomon's first entry into the ski boot market, and became a major success during the second half of the 1980s. Its success made rear-entry designs the most widely used boots during this era, accounting for about 80% of all boot sales. Compared to conventional top-entry designs of the same era, rear-entry designs were far easier to put on and take off, much easier to walk in, and generally much more comfortable. However, they did not offer the same level of stiffness as top-entry designs, and became unfashionable in the 1990s when racers shunned them in search of a stiffer boot.

The SX 92 improved on the earlier SX 91 series by combining two closing levers into one. The lever is at the back of the boot, in black with the (somewhat worn) silver "S" logo seen on the closed boot on the right. The lever rotates upward for release, which can just be seen on the left boot - compare the location of the blue dial on the two boots. In the SX 92, the lever operates two cables. The black cable, visible on both boots, pulls the rear half of the cuff forward and locks it against the front section. The white cable, only easily visible on the open boot on the left, pulls on a plate over the front of the ankle, pulling the foot into the ankle pocket at the back of the boot. On earlier models, two separate levers pulled on these cables individually. The blue dial on the release cable allows the relative tension of the two cables to be controlled.

The front of the boot is a single piece without buckles to adjust fit. Instead, the foot area is made roomier than normal, allowing it to fit a wide variety of foot sizes. The small white tab with the word "memo" operates a separate cable that tightens over the instep and prevents the foot from moving about. This needs to be adjusted only occasionally.

Above the instep are small black plastic squares with blue operating buttons, which control the forward flex of the boot. Forward forces on the leg, transmitted through the ankle pivot points, applies pressure against these tabs. When they are positioned near the sole of the boot, as in this case, the leg cuff has considerable leverage, amplifying the force against these tabs. The tabs, in turn, apply this force against a section of plastic that has been cut away to increase flex. In this position, the boot is set to a soft flex. Pressing the blue buttons unlocks the tab, allowing it to be slid higher on the boot. Here the upper cuff has less mechanical advantage, and the plastic is not cut away, offering a much stiffer flex. The SX series was one of a small number of boots that allowed on-the-fly changes in flex patterns.

The final adjustment on the SX 92 is a canting adjustment, which can be set using the small screw adjustment, seen on the back of the right boot beside the two white triangles above the heel.