TST (Terrain Selection Technology)

This is a 5-position click system that effects the compression in ways that air pressure alone cannot. There are essentially 4 compression settings and the fifth is a complete lockout. With each increase in TST position, the compression gets both stiffer and slower. Think of the TST as a damping system that effects the compression in a similar way that rebound effects the decompression. Here’s a setting by setting view of each TST position:

*Most riders tend to ride in one of these three settings.

Keep in mind that with the TST system, or other as well, as you increase pedal efficiency there is a degree to which you sacrifice the small bump/slow speed sensitivity, but with a Marzocchi it’s really not that much. The fork somehow still stays plush and reactive, but for super plushness you may want to choose one setting below your optimal climbing setting.

As a personal recommendation, I prefer setting 4 the most, and sometimes revert down to setting 3 for less challenging rides. I love the benefits of less fork dive when braking, the pedal efficiency and bottoming resistance. The difficult thing is to explain how the fork is not quite as plush yet somehow remains very smooth. Yes, smoothness and plushness really are two different things and if you don’t understand what I mean than you need to get on a Marzocchi “hybrid fork.”