Bosch’s super powerful and reliable Gen4 Performance CX 250W motor and 625Wh battery, provides the power and range to get the most out of those precious hours of ride time. Different wheel sizes round off the package: 29" wheels at the front offer precise and comfortable rollover behavior, while the 27.5" wheels at the back give the eMTB perfect traction to master the steepest uphill and downhill slopes.