Bafang Model: G340.750. Max speed up to 55km/h. No Load Speed(RPM) :140-160. Load Speed(RPM):120-135. MAX Torque:100 N. PAS SENSOR : Speed Sensor. Reduction Ratio: 1 : 21.9. Net Motor Weight: 4.24kg. Motor kits Weight:5.6-6.0kg. Bracket bottom length:68mm (The bottom bracket shall be 68-73mm). Motor Operation Temperature:-20? Bafang Controller: Integrated Inside the Motor. 48V Motor Kits Packaging included? 1 48V Mid Drive Motor built in controller. 1 Set Speed Sensor. 1 4 in 1 Cable. Note: Gear shift sensor is not included. Gifts: 1 PC 6V Front Light + 1 PC Gloves + 1 PC Install Tool Wrench + 1 PC Crank Removable Tool + 1 PC XT60 Port Motor Battery Connector Cable + 1 set Install Accessories for 73mm Bottom Bracket + 4 PCS 36V 250W Stickers + Cable ties + User Manual. Q: How do I know if this mid drive motor fits for my bike? A: This 68mm mid drive motor fits for the bike with 68mm (2.68 inch) – 73mm (2.87 inch) wide bottom bracket. The inner diamater of the bracket should be not less than 33.5mm. We’ll send extra install accessoreis for 73mm bottom bracket. 100mm mid motor fits for the bike with100mmm wide bottom bracket. 120mm mid drive motor fits for the bike with 120mm wide bottom bracket. Q: How do I confirm whether I need the brake levers or the brake sensors or not? A: If your brakes are hydraulic or you want to use your own brake sensors, you can choose brake sensors. They can connect with your brakes to work directly. Q: Can I install the motor as soon as I receive it? A: Before installing the motor, please follow the steps in the manual and the tutorial video to connect the motor to see if the motor can work normally. We has been specializing in DIY electric bike for more than 8 years. Has extensive experience in modification. We has a good cooperative relation with BAFANG/Tongsheng/MXUS company, All the items we sell are genuine and authorized. We provide high quality products and professional services. Working time Monday Friday. Hope you can understand if we can’t reply you on time during weekend.