Silvretta 404 ski touring binding is one of the true classics. A couple of people have asked me for mounting instructions as this binding is still a viable climber’s approach binding, though we don’t recommend any vintage or antique binding for backcountry skiing as none have as good a safety release as modern grabbers.
Inspired by the interest out there, we added the 404 to the virtual binding museum, and whipped up some mounting instructions and a template. (As always, no warranty on templates or mounting instructions, you use at your own risk.)
Museum Display – Silvretta 404 Backcountry Skiing Binding
Silvretta 404 Mounting Instructions

404 still makes a good approach binding, but don’t use for actual downhill skiing or you could injure yourself. Modern version of 404 is the model 500, which still works with stiff welted boots.
WildSnow.com publisher emeritus and founder Lou (Louis Dawson) has a 50+ years career in climbing, backcountry skiing and ski mountaineering. He was the first person in history to ski down all 54 Colorado 14,000-foot peaks, has authored numerous books about about backcountry skiing, and has skied from the summit of Denali in Alaska, North America’s highest mountain.