http://www.passionebike.com/electric-bicycle/fat-electric-bike/ 2021 latest product: dual hub motor electric bike adult. Dual motors and dual controllers ensure a stable source of power. The 18Ah large battery has a battery life of up to 70 kilometers. The frame is taller and longer, even long-distance riding will not feel uncomfortable. Of course you can choose only 500W or 750W rear hub motor only (without front wheel hub motor). Detail Specification Electric Bike Adult Electrical system Mechanical system Battery 48V 18H lithium battery(Samsung optional)Frame 6061 Aluminum alloy Motor Dual 48V500W Bafang hub motor RM G060.500.DCBrake Tektro / LOGAN / NUTT Disc Brakes with power cut-off Display KING-METER SW LCD displayFreewheel AMFTZ5007428 Shimano 7 speed Controller Dual 48V 18AShifter ASLTX50R7CT Shimano 7 speed Light LED Front and rear lightDerailleur ARD-FT35AD Shimano 7 speed Pedal assist 12 magnetsFender/ rack Including Throttle Thumb/Twist throttleTire 20" x 4.0 Kenda/Chaoyang Brand Cable Waterproof and quick connectFront axle Quick Release Charger Smart charger, AC110V-240V/50-60HZ (Different country plug optional)Fork MOZO customized suspension front fork Others Grip/ SaddleChifan Customized BlackKickstand Aluminum alloy Handle /stemAluminum alloy/adjustableChainKMC Stainless Steel PedalWellgo Aluminum alloyCrank setProwheel 48T Charging time 6-8 hoursDistance/charge45-65 KM Max Speed 25-42 KM per hourPacking size 160*30*80 CM N.W. 32 KGSG.W.37 KGS Please note: we don鈥檛 suggest to carry people, this will make riding very unsafe. At the same time, it is recommended that the maximum load does not exceed 150kg. Please carry a helmet when riding and check the condition of the electric bike adult regularly to ensure riding safety. Q&A 1: Q: Whether it is only suit for teenagers? A: People over 172cm will be more comfortable to ride this ebike. If he/she less than 165cm, there will be a little difficulty when stop it. 2: Q:Can I order one piece as personal use? A: Yes, this model is ready to ship. 3: Q: Do you accept drop ship business? A: Yes of course. Since this model is mainly retail, welcome to cooperate with us for drop ship trading. 4: Q:Whether to provide warranty? A: Yes, one year warranty.China Fat Electric Bike website:http://www.passionebike.com/electric-bicycle/fat-electric-bike/