Qualisports folding structure makes the folding size only 830*480*700mm, weights only 47 lbs.

It can easily fit in the back of an SUV, in the trunk of a car, RV and easily folds for ease of transportation.



The Dolphin features a 14Ah Samsung battery, hidden in our patented seat post battery system that lasts longer, is more efficient and encased with full battery-cell protection sleeve. This e-bike will allow Qualibikers to ride between 50-60 miles of utilizing the PAS (Pedal Assist) mode and 30 miles range on the throttle mode in a single charge.

The intergraded customized BMS system protects the battery from over charging, over heating, stabilizes and regulates current output.



The Re-programmed FOC controller offers Quali-bikers a more enjoyable and comfortable riding experience. 

This is accomplished by the integration of our components mentioned above to provide a smoother fluid motor engagement.



The rear mounted 350W brushless geared motor has been re-engineered from inside and out.  New material was utilized in the gears producing a stronger magnetic field is applied inside the motor which achieves a more powerful and efficient motor that will endure a longer lifespan.



The Dolphin has been crafted and tested under our strict guidelines and procedures. The frame is made of 6061 Aluminum which is an industry standard known for its lightweight and strength, allowing our bikes to appeal and support heavier heavier cyclists.






Qualisports Dolphin 20in Ebike 350watt

  • Product Name: Dolphin Motor: MXUS Brushless Geared DC Motor Brakes: 160mm Disc Brakes
    Model Name: QSEB03 Rated Output Power: 350W Rim: 20 inch Al-alloy 12G36H

    Size: 62.9*23.3*44.1 inch

    Motor Efficiency: ≥ 85% Tire:  20x2.35"

    Folding Size: 32.6*18.9*27.5 inch

    Rated RPM: 310±10 r/min Chain Wheel: Prowheel 52T

    Wheelbase: 43.5 inch

    Rated Voltage: 36V Free Wheel: Shimano 14-28T
    Net Weight: 47 lbs Max Torque: 40 N.m Derailleur: Shimano 7 Speed
    Range: 62.5Miles (PAS) Overcurrent Protection: 15±1A Chain: KMC
    Max. Load: 300 lbs Low-voltage Protection: 30±1V Handle Bar: Promax
    Max. Speed: 20 MPH Kwh: ≤ 1.2Kw.h Display: Kunteng LCD
    Charging Time: 6~7 Hrs Modes: 5 Levels + Throttle + Walk Assist + Cruise Controller: Kunteng Sine Wave FOC
    Battery Type: Samsung Lithium-ion Tire Diameter: 20x2.35 inch Brake Levers: Al-alloy Ebike Lever
    Battery Capacity: 36V 14Ah Frame: 20 inch 6061 Al-alloy Foldable Saddle: KNUS
    Noise : ≤ 62 dB(A) Front Fork: 20 inch 6061 Al-alloy Pedal: Foldable