The complete SRAM RED eTap 2x11 groupset is 77 grams lighter than Shimano Dura Ace Di2 when compared using our heavier GXP crankset option (as opposed to SRAM’s BB30 crank and PF30 bottom bracket option, that both come in 52 grams lighter than the equivalent GXP option, for a total additional weight savings of 104g).
The complete SRAM RED eTap 2x11 groupset is 137 grams heavier than SRAM RED mechanical with the same crankset, bottom bracket, and a short cage rear derailleur.