Without a battery in the derailleur, that’s one less charger in the house. The Sign-E23 Carbon is the only version in the family to use a mechanical 12-speed Shimano XT drivetrain, making it the simplest to maintain. The Shimano EP801 motor and compact 400 Wh battery match the higher trim levels, as does the carbon frame with 130 mm of rear travel and 140 mm up front. Starting at 19.5 kg, it’s the heaviest version in the lineup—and still lighter than most e-mountain bikes. An entry-level e-trail bike that doesn’t feel like one.