Changzhou Kingsun Electrical Co., Ltd is a specialist of emobility components and complete systems and sells itsproducts internationally. Our area of expertise is the production of systems for e-bike motors , ebike kits and ebike parts .

Our factory located in Changzhou city ,jiangsu province .We start our business with ebike systems in 2010. We assemble the best and cheap ebikes to support customers all over the world.

We would like to invite the customers to visit us .

1.Warranty :motor is 3years ,battery is 18months,other ebike parts are 1year.

2.OEM &ODM are available as customers demand.

3.We have professional team on ebike parts ,10years working experience engineers and sales .

4.Workers are well trained ,testing every single parts before packing.

5.Sales reply to you within 24hours .online time is long ,easy to contact .

6.After service is fast ,send replacement parts as soon as you send fault parts to check.

1.What payment method you can accept ?

(1) T/T:30% deposit before production,70% balance before shipping .

(2)Paypal,Western Union is acceptable for the sample order.

2.Front wheel or Rear wheel ?

Front elctric bike kits= easy to install, easy to maintain. This is the best for Balance if you are using SLA batteries on a rear mounted rack because of the weight.

Rear electric bike kits= harder to install, BUT for big motor, =More safety Installation only for the very

Mechanically inclined or professional.

3. How do electric bikes work?

Electric bicycles use batteries as a source of power and a quiet DC motor as a driving mechanism. On most e-bikes the motor is built directly into the wheel (known as a hub motor) and the batteries are discreetly hidden in the rear rack or frame. Electric bikes can be operated just like normal bicycles, but they can also be power-driven by a throttle or pedaled with the help of 'pedal-assist' (or 'PAS').