weight in 10 pounds 4 ounces. At 12.6 volts DJI estimates 600 gram thrust per motor, however we have upped the voltage to 15 volts even, but still below the 17 volts recommended maximum for the ESC / Motor combination tuned E300 system. I am considering swapping to smaller heatsinks without fans to lose around a pound since there are 8 of them.  I have smaller and longer ones that would be only 4 and no doubt a weight decrease.  The upper level anti vibration I added could be eliminated if needed to maybe lose another half pound or so, but that’s a last resort.