cheap electric bike conversion kit

{"title":"TOP\/OEM CE motor 250W Cheap 48V 500W Electric Bike Conversion Kit rechargeable battery for rear","imgUrl":"https:\/\/img.chinax.com\/nimg\/0a\/d2\/c85340a1ca3edfca1ee6a07d500c-200x200-1.jpg","attrs":{"Price":"Email us for details","Brand Name":"DongDian","Model Number":"Version1","Minimum Order Quantity":"1 Set\/Sets","Part":"Electric Bike Motor","Place of Origin":"Jiangsu, China","CERTIFICATE":"EN15194 CE by GERMANY TUV GMBH","RIM COLOR":"BLACK\/SILVER","RIM TECHNOLOGY":"CNC TECHNOLOGY","RIM MATERIAL":"STEEL","Voltage":"24\/36\/48v","Design":"Brushless","Rated Speed":"25km\/h","Open Size":"135mm","Rated Power":"180w-350w","Brake Type":"Disc Brake optional","Supply Ability":"5000 Set\/Sets per Month","Packaging Details":"Packaging Details: SATNDARD CARTON WITH FOAM","Port":"shanghai","Payment Terms":"Paypal,TT,Western Union"}}

{"title":"Brushless Gearless Mountain Bike Electric Conversion Kit 3000w 48-72v 25-60km\/H","imgUrl":"https:\/\/img.chinax.com\/nimg\/fc\/db\/50c10b43043a85bbc2b90679c1f1-200x200-1.jpg","attrs":{"Price":"Negotiable","Brand Name":"OEM","Model Number":"ENC3000","Minimum Order Quantity":"20","Delivery Time":"15 working days after received your payment","Certification":"CE","Place of Origin":"CHINA","Payment Terms":"T\/T, Paypal , Alibaba Trade assurance","Supply Ability":"2,000pcs per month","Packaging Details":"carton box with foam, package size : Package size and Gross weight\t17\" 18\" 24\": 55cm x 55cm x 25cm \t19\" 26\": 60cm x 60cm x 25cm","motor power":"3000w","voltage":"48-72v","wheel size":"17\" 18\" 19\" 21\" 24\" 26\"","pack weight":"15 kgs","throttle type":"thumb throttle or twist throttle","controller":"smart 48v-72v 80amp","speed":"25-60km\/h","warranty":"2years"}}