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Bostar 48V 250W cassette freewheel electric bicycle motor
250W electric bicycle motor

Bostar 48V 250W cassette freewheel electric bicycle motor

Bostar is specialized in 250W electric bicycle motor and so on. The 250W electric bicycle motor is low moise and waterproof. If any inquiry, please contact us.
Product Detail

Product Description

Product nameBS-90C2Open size138mm
PosotionrearDrive and freewheel9s
Rated voltage24/36/48VCable locationShaft center right
Rated power180-350WSpoke specification28H/32H*12G/13G
Wheel size
16-28inchHall sensorOptional
Rated speed25km/hIntegrate speed sensorOptional
Temperature-20~45℃Surface colorblack/silver/shining

Reduction ratio

1:4.5Brake tyoeV/Disc brake
Rated efficiency≥82%Noise<55db
Weight3kgWaterproof gradeIP65

Size illustartion

250W electric bicycle motor


Packing & Delivery

All our products are packaged by environmentally friendly cardbox with foam

Main Features

1.low noise(<55db)
2.excellent waterproof grade

3.high torque,easy to cycle uphil

4.shorty delivery time within 15 days

5.high efficiency less power consumption
6.OEM/ODM service available

why choose us

  1. OEM and ODM available for us

  2. 100% inspection of each process of production

  3. 100% QC inspection before delivery

  4. Sample manufacture and Mould Development

After sale service

  1. Free repair within 2 years and you only need to pay the freight

  2. If you receive the goods which is defective not your problem, that we can replacement with new one for you (when you receive the goods within 5 days and you can contact with our staff)

  3. After sending,we will track the products for you once every two days,until you receive the products.When you got the goods,test them, and give me a feedback.If you have any questions about the products,contact us,we will offer the solve way for you.


Q1.Why choose us?

A.We have professional team of workers,service and inspection,and we have our own sub factories.

Q2.What is your sample policy?

A.We can supply the sample for free if we have ready parts in stock,but customers have to pay the freight cost.

Q3.What is your terms of payment?

A.Generaly,you should pay 30% deposit before production and the balance shoud be paid before shipment,For the small order,you need to pay 100% payment before production.

Q4.Do we need to pay the cost of creat mould for special products?

A.Yes.Once we creat your mould ,you need to pay the cost of the mould.When your order quantity up to20000 pcs that the cost of mould will be refund for you.

Q5.Do you offer customized packing?

A.Yes.All of our products can be packed as your requirement.

Q6.How about your delivery time?

A.Generaly,for the normal products sample order is within 10 days for batch order is 25 days.

Q7.Do you test all your goods before delivery?

A.Yes.We have 100% test before delivery.

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