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The first thing people might ask of Shimano’s Electric Di2 drivetrain is: What’s the weight penalty? There isn’t much. The group is roughly 60-grams lighter than the 7800 Dura-Ace group and only 60-grams heavier than the new 7900 group. | Photo: Matt Pacocha
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The first thing people might ask of Shimano’s Electric Di2 drivetrain is: What’s the weight penalty? There isn’t much. The group is roughly 60-grams lighter than the 7800 Dura-Ace group and only 60-grams heavier than the new 7900 group. | Photo: Matt Pacocha
