26''/28'' Rear Wheel 36V/48V 1000W Electric Bicycle E Bike Conversion kit Hub Motor - AliExpress
Amazon.com : HAOREBAIYU Electric Bike Conversion Kit, 24In E-Bike Rear Wheel Motor Kit with Pas System, 36V 500W Brushless Gear Motor with LCD Display, Dual Mode Controller E-Bike Conversion Kit : Sports
28 Inch Electric bike Conversion Kit 48V 1000W e-Bike Rear Motor Wheel With LCD | eBay
48V 28" Electric Bike Conversion Kit Motor E-Bike for rear / front Motor1000W | eBay