ST stands for "short-travel" - 1.3" ofTravel is ideal for cross-country racers, road, or comfort riding where you just needToTakeThe edge off bumps withoutThe complexity of aTrue suspension solution. A patented 4-pivot force aligned parallel linkage keepsThe pedalTo saddle distance nearly constantThrough itsTravel. An aluminum mast and links, rebuildable stainless pivots, and bronze-impregnated PTFE coated steel bushings keepThe weight downTo 460 grams - barely moreThan aTraditional rigid post.
Grabbed this after several long rides on my aluminum 29er hardtail left my back aching. Big help. After an initial adjustment period this piece becomes invisible. You know its working but you really don't feel it. Great for seated climbing over rough trails, but still better be up off the saddle for fast technical trails. Mine was "assembled" in the USA.
