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SRAM Red eTap - actual weights and installation - BikeRadar
The eTap group as a whole is about 1,970g, roughly 60g heavier than mechanical Red but about 75g lighter than Shimano Dura-Ace Di2 9070 for comparably configured setups.
Claimed weight for a pair of eTap shifters is 130g and we weighed our test samples at 131g. For reference, mechanical Red shifters are 140g a piece.
The rear derailleur is claimed at 239g; we weighed ours at 237g including the 24g battery (the red plastic cover weighs 3g).
The front derailleur is claimed at 187g; we weighed ours at 162g including the battery.