If you're after the lightest possible ski touring set up then Dynafit bindings are a no-brainer. They offer the ultimate in ski touring performance and are massively lighter and simpler than other styles of AT binding.
Note: You will require special boots to use with Dynafit bindings.
Lightweight multi use pin touring binding. 1062g
New Purist Ski Touring Binding. 682g
Great value light ski touring binding. 660g.
Crampon for Dynafit / Plum bindings.
Dynafit ski brakes for Vertical, Radical (2011 only) & Comfort Bindings
Leash to connect boots to bindings, 35g.
First aid kit which fits between your Dynafit ski crampons.
Stop you losing your skis in a crash.