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 the merchant, we will send the 8s flywheel by default. NOTE: The MTX rim is the strong rim and works with 1.95,2.1,2.3,2.5,3.0 tires. But it is working for disc brake Only, can't use V brake !!!! Please choose the normal rim for V brake bike . Features of the 52V 2000W Electric Bike Conversion KitProduct: 1. High Quality 12MOSFET 35A ±1 Controller (Includes cruise Function ) 2. Rear 52V 2000Wmotor 3. Strong Double-wall Aluminium Alloy Rim MTX sun-ringle From USA . 4. Full Speed: about 60-65km/hour 5. Certificates: CE, CCC, EN15194, ISO 9001-2000 Electric wheelMotor Specifications for 52V 2000w electric bike conversion kit Electric wheel Size 20″ Wheel Motor 24″ Wheel Motor 26″ Wheel Motor 700c Wheel Motor 28″ Wheel Motor 29″ Wheel Motor Voltage 52V 52V 52V 52V 52V 52V Power 2000W 2000W 2000W 2000W 2000W 2000W 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 52V 2000WElectricBike DIY Conversion Kits Included: 1. 2000W Powerful Brushless Gearless Motorized 20" 24" 26" 700C 28" 29"Wheel Rear Motor 2. 52V 35Controllersmart 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. LCD display 9.52V 13AH Tiger Shark Lithium Battery LG cell with 2a charger. 10. 8speeds or 9speeds for choose. 11.GOOD PACKAGE FOR EXPRESS The photos for 52V 2000W e bike conversion kit with 52V 13AH tiger shark lithium battery LG cell : Packing for 52V 2000We bike kit : The normal rim is suitbale for V brake and Disc brake : 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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