"swiss cheesing" rear brake rotor

[junior varsity]

i've got a motomaster on mine - never thought to check its weight.

for those with money, yoyodyne has a Ti rear brake rotor.

[Blue]

Ducati stock rear rotor=940g
Lightened one (mine at least)=620grams
Galfer rotor=576g
Vortex rear sprocket=410g  46t 520 for a marvic wheel

so there it is about a pound just with rotor.  I don't know what a stock sprocket weighs, don't have any, but it's gotta be 2x what the vortex does.  you could get even more weight off of the stock sprocket by facing/thinning it.

Thanks for posting the weights for the rotors.  It is good to know what the advantages to the various options are. 
Man, it has been a long winter; too much time to think about the "what if I did this...".

[atomic410]

I have an ABM that I'll weigh this weekend.  I'm looking to sell it after that

[Kopfjäger]

Here is one that the mech that built my Monster, did on his bike.

[TAftonomos]

my monster lost nearly 5.5 lbs when I did the rotor, 520 chain and sprocket.