Motor Model:BBS01B Power:250W Voltage:48V Controller Current:48V12A Efficiency:>80% MAX Torque:80 N. M Waterproof Grade:IPX5 No Load Speed(RPM):83-87 Load Speed(RPM):78-83 PAS Sensor:Speed Sensor Reduction Ratio:1 :21.9 Bracket bottom length:68mm Motor Operation Temperature:-20? -45? 48V 250W Motor Packing list. 1 48V250W Mid Drive Motor 68mm 1 Brake Kit 1 Crank 1 44T Chainwheel (Pls leave us message if you want other size) 1 Thumb Throttle 1 Speed Sensor 1 1 to 4 Cable 1 Accessories 1 User Manual 1 Wrench tool. POWERFUL BIKE MOTOR KIT. The max torque of BAFANG BBS01 250W is 80 Nm, it provides you with super power to ride. You can cycle on the road or climb the mountains much faster and easier, which really plays a great role in your daily life especially for the old. There are 3 riding modes for you to choose : Electric Bike (Thumb Throttle Mode), Pedal Assist, Normal Bike. Various modes satisfy your different needs, this eBike motor can make your cycling trip more exciting. Performance engineered, Bafang batteries always get you there. Combining the latest technology and years of industry know-how, we have developed lightweight, fast-charging, long-life batteries that provide the highest level of efficiency. From intube to racktype, the range will meet the needs of any project. With such diverse options, Bafang has the solution to power-up any eBike.