Shimano Steps DU-E5000 250W Mid Motor Electric Bike Drive Unit. SHIMANO E5000 is our lightest, quietest e-bike system to date. And it’s ready to electrify your urban lifestyle, come rain or shine! It makes city commutes and daily errands faster, more fun and less stressful. Opt for manual shifting or automatic shifting (Di2) for more focus on the road and an extra boost when starting off. The E5000 drive unit produces an efficient torque of 40 Nm. Integrates innovative motor technology into a practical, quiet and lightweight drive unit (2.5 kg, which is 380g less than other SHIMANO STEPS drive units) for a smooth, powerful yet natural riding experience. Combined with a 504 Wh or 418 Wh battery, your e-bike nicely gets where you need it-in time and without sweat! The motor is specially designed to handle the demands of urban environment. Integrated design drive unit and 2 design variation drive unit covers. Optimized pedaling assist for comfort riding. Lower drag torque & lower noise. Compact and light weight. Maximum assist speed set by E-Tube Project (25 km/h). Symphomatic and automatic shifting for natural riding experience (with DI2 internal geared hub). Quick walk/Intelligent walk assist function (with DI2 internal geared hub and rear derailleur). Compatible for all brake typ. Axle type: square taper. Continuous rated power: 250W. Does not include SM-DUE50 outer casing.