Excellent Cycling!

E-bike Kit

The lightest E-bike kit


Total kit including battery:1.2kg

Multiple battery options

B60S -100wh,B70-210wh,H70-300wh

Faster speed

QR-E PRO maximum speed 30 mp/h

Customer Support

Email or Online

Classic design

Used by customers around the world.

Innovative Technology

Mute,Regenerative braking, high efficiency

Enjoy cycling

Best experience

Qiroll’s products have a unique technical design structure, based on the original electronic clutch technology. When the motor and the tire are not separated, it will not cause resistance to ordinary bicycles. Therefore the Qiroll structure and operation mode are unique in the field of friction boost. Smaller size, more simplified installation and more stable and efficient use of friction are the main benefits of Qiroll electronic clutch technology.

Intention to create

SEE it all

1.Innovative Technology:Electric Clutch、Mechanical Clutch、Mute Motor Control and Integrated System.
2.Electric Clutch:reduce tire wear and improve operating effiency.
3.Mute Motor Control: a built-in DSP processor controls the operating state of the booster. 
4.New Friction Material:dose not damage tires and easy to replace.
5.Easy Installation:just take a few minutes.
6.Stable and secure:start response fast in just 0.1 second.
7.Long endurance:B70 battery pack with new bms system support  hybird mode cycling 70km.

Cyclists around the world are using Qiroll.

This bicycle power-assist kit is compact and exquisite in design, and is highly concealed after installation. Whether it’s commuting or riding with a companion, the feeling of acceleration makes me feel great. By the way, the new B70 battery packet has long endurance.