The Cassette type is gear system for high grade bike or bicycles. We will provide the 8speeds or 9speeds for rear wheel. Please customer tell us if you need the 8speeds or 9speeds cassette when order it.If you do not have a note or contact us, we will send the 8s flywheel by default. The updated Opional for 48v 1500w e bike kit: Sun ringle American Rim MTX model and Aluminum alloy Stator motor ; Stronger, More current, more efficiency, bigger torque . We are using MTX39/33 Sun-ringle Brand From USA for24inch, 26inch, 29inch/700c 1500w e-bike kit. 65km/h 48v 1500w Electric bike conversion kit for 20" 24" 26" 28" 700c Features of the Product: 1. High Quality Sinewave12MOSFET 35A ±1 Controller. The new smaller Controller , easy to put, and more stable. 2.Cassette typerear motor 3. Strong Double-wall Aluminium Alloy Rim 4. Full Speed: about 55-65km/hour 5. Certificates: CE, CCC, EN15194, ISO 9001-2000 Electric wheelMotor Specifications Electric wheel Size 20″ Wheel Motor 24″ Wheel Motor 26″ Wheel Motor 700c Wheel Motor 28″ Wheel Motor 29″ Wheel Motor Voltage 48V 48V 48V 48V 48V 48V Power 1500W 1500W 1500W 1500W 1500W 1500W High Motor Efficiency >85% >85% >85% >85% >85% >85% Speed 0-45km 0-50km 0-65km 0-65km 0-65km 0-65km Front orRear Fork Dropout Requirement 100mm for front motor, 135mm for rear motor 100mm for front motor, 135mm for rear motor 100mm for front motor, 135mm for rear motor 100mm for front motor, 135mm for rear motor 100mm for front motor, 135mm for rear motor 100mm for front motor, 135mm for rear motor Available Speed Gear Quantity 7-Speed for rear motor only 7-Speedrear motor only 7-Speedrear motor only 7-Speedrear motor only 7-Speedrear motor only 7-Speedrear motor only Bike rim 20″ 24″ 26″ 700C 28″ 29″ Controller Specifications Input Voltage DC 48V(Universal) DC 48V(Universal) DC 48V(Universal DC48V(Universal DC48V(Universal DC48V(Universal Min.Voltage DC 40±0.5V DC 40±0.5V DC 40±0.5V DC 40±0.5V DC 40±0.5V DC 40±0.5V Rated Current 20A 20A 20A 20A 20A 20A Max. Current 40±1A 40±1A 40±1A 40±1A 40±1A 40±1A Speed set 1-4.2V 1-4.2V 1-4.2V 1-4.2V 1-4.2V 1-4.2V Electric BicycleBike DIY Conversion Kits Included: 1. 1500W Powerful Brushless Gearless Motorized 20" 24" 26" 700C 28" 29"Wheel Motor 2. 48V 1500W Controller, Sinewave48v 35Amp smart controller 3. Controller bag 4. 1 pair of Top Quality Black Aluminum Alloy Brake Levers 5. ThumbThrottle. 6. PAS 8 Magnets High Quality Pedal Assistant Sensor 7. Book manual and ties 8.8speeds or 9speeds for choosing 9. LCD display. 10.GOOD PACKAGE FOR EXPRESS Pictures for 48v 1500w electric bike conversionk Kit : 20inch motor wheel picture. 26inch 48v 1500w motor normalwheel with controller, lcd display, throttle, brake levers , pas, book manual. 26inch motor wheel FAQ Q: Custom Duties: A: Import duties,taxes and charges are not included in the item price . Q: Color Difference : A: The pictures showing at our store are taken based on the true products .Because of different monitor and brightness,there may exist normal tiny colour difference,please donnot leave a bad feedback or return goods to us without contacting us Q: Delivery Time : A: If products still in Transit ,and your deliver time is going to expire ,kindly contact us ,and we will extend delivery time for you .and if products is lost in transit ,kindly contact us we will make full refund or resend the same products to you soonest . Q: Feedback: A:Your satisfaction and positive feedback is very important to us. Please leave positive feedback and 5 stars if you are satisfied with our items and services If you have any problems with our items or services,please feel free to contact us before you leave negative feedback. Q: Defective Products: A: Please do not sign on shipping bill if products is defective , it is shipping company's responsibility , please take photo for us and we will make refund to you . Q: Return Policy: A: we do our best to serve our customers.we will refund you if you return the items within 15 days of your receipt of the items and it is only the reason of product itself like defect,damage,anything that is seller's fault,not the buyer's personal preference or failure to use. Besides,the items returned must be in their original conditions 
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