While my bike don't experience any upgrades, I post some information about some component's weight.
Avid HS-1 (HS1) 180mm rotor weight is about 135gr. It is 15 grams lighter than stock Avid G2CS rotor of my Norco Sight.
I don't like how HS-1 rotor looks like, that's why I will install it on my training wheelset.