BAFANG BBS02B Mid Drive Kit : 48V 750W Mid Mount Electric Bike Conversion Kit with 48V 13Ah Shark Battery & P860C Display & 44T Chainring for BB68-73mm, Powerful Motor for Mountain Road Bike

• WIDE COMPATIBILITY:BAFANG BBS02B and BBSHD mid drive kit sold on this page is compatible with 68-73mm ( length ) and 34-36mm (internal diameter ) JIS standard bottom bracket . You can install this conversion kit on your mountain bike or road bike . We do not recommend to mount it on the bikes with carbon fiber frame or costaer brakes . *** If you are looking for a motor with other chainring , battery , bottom bracket , just reach out us and we can satisfy your DIY thought POWERFUL MOTOR & RIDING MODE:Speed Sensored BAFANG electric motor has excellent performance on climbing . Take it to exercise and have fun ! Easy to convert your bike to an electric bike in short time. Please reach out us for the manual & installation video. Featured with integrated controller , the motor is safer and stronger. High efficiency and low consumption , nobody can resist this excellent motor LARGE CAPACITY BATTERY:There are 4 kinds of batteries for you to choose. The shark battery and YINGWU battery are mounted on the down tube , and the rear rack is included if you order a rear battery . The differences between 48V 17.5Ah and 20Ah shark battery are the size , capacity and cells , they are both of premium quality . ***If you choose the option [NO Battery], there is no battery sent PACKING LIST:There are basic tools and parts that you need included in the order. Make order and wait for the package, then take it with your exercising mountain cycling trip! If you order a BBSHD motor without battery , it will be a 52V 1000W motor . If you want to exchange for a 48V 1000W , please inform LOCAL WAREHOUSE:If there is any problem with inventory, we will email you, please keep an eye of your Amazon inbox. We have professional techs in the US who can offer technical support . Responsible & patient customer service, no worry about after-sales at all. How to reach out us on Amazon : Help & Settings - Customer Service