Wheel Bottom bracket: Rear 135mm-142mm. RPM: 480 for 1000W 550 for 1500W. 12 Mosefet conctroller for 48V 500w/1000w. 18 Mosefet conctroller for 48V 1500w. Functions: Speed indicator, PAS grades indicator, Battery indicator, Error indicator, Single Trip Distance and Total Distance.8 Magnet Pedal Assistant Sensor. These charges are the buyers responsibility. Your satisfaction is our top priority and we are confident that you will be pleased with our services. Highly Recommended Battery- Safe and Longe Lifespan. The item "Conversion Kit Cycling Motor 48V 1000W 1500W 20 24 26 700C E Bike Motor" is in sale since Friday, November 1, 2019. This item is in the category "Sporting Goods\Cycling\Electric Bikes". The seller is "cscbike" and is located in Shanghai. This item can be shipped worldwide.