Wheel Bottom bracket: Rear 135mm-142mm or Front 100mm 5. Torque:30-40NM for 500W 1000W 35-45NM for 1500W 6. RPM:470 for 48V 500W 1000W 540 for 48V 1500W. Noted:Battery not included 1 front or rear Motor wheel(20/24/26/27.5/28/29inch 700C) 1 Tire 1 Controller 1 Controller Bag 1 pair Power cut-off Brake lever 1 set Twist Throttle with LED 1 Pedal Assistant Sensor 1 7-speed thread-on freewheel 1 160mm disc brake. Your satisfaction is our top priority and we are confident that you will be pleased with our services.This item is in the category "Sporting Goods\Cycling\Bicycle Components & Parts\Electric Bicycle Components". The seller is "lightinbike18" and is located in this country: CN. This item can be shipped worldwide.