Technologies 1:1 1:1 Actuation™ is superior by design. Every unit of cable you pull moves the derailleur the same amount. Actuation stays precise & fluid slogging through mud, bouncing off rocks, rutting through roots — wherever you find yourself, whatever conditions youre in. Its dependable. Tolerant. Easiest to set up. Easiest to adjust. &, not coincidentally, the top choice of the top MTB riders. Got it? Good. Direct Route Technology Heres the dirt on middlemen: they suck. Thats why Direct Route Technology™ doesnt have one. Instead, the cable routes directly to the actuation mechanism. Result? Less friction. Less effort. More oomph. Plus its impervious to cable housing damage. Nice.