Dolphin - Pre-sale Now

ETA: Early June
From $1,599.00
What's in the box

Front and rear fender X 1
Kickstand X 1
Battery and charger X 1
Thumb throttle X 1
Front and rear light X 1
Tool bag X 1

Size and fit

Folded Size: 33*14.5*28.5 in
1.Max Handlebar Height:39.76 in
2.Min Handlebar Height:32.48 in
3.Standover Height:21.50 in
4.Max Saddle Height:39.76 in
5.Min Saddle Height:32.00 in
6.Wheelbase:42.25 in
7.Reach :22.50 in
8.Width:25.00 in

Free shipping

Shipment:Ship within 48 hours

Once your order is received, a confirmation will be sent by email or text, it takes us 48 hours to prepare your order, and you will be notified as soon as it ships.

Orders placed on weekend will be arranged on next business day.

Please obey the laws of your state. Ride safely, wear a helmet



One 48V 10.5AH lithium-ion battery, one 7AH optional lithium battery, charging time of 4-6 hours, and a range of roughly 80+ miles.

The new Dolphin and Dolphin Plus have the same frame design, allowing it to be upgraded to a dual-battery version by purchasing a dual-battery kit.


Climb hills and traverse crossroads smoothly and efficiently, powered by our custom 500W motor from Qualisports USA, which is designed in-house to help you go steeper at a lower speed.


With fluid in the master cylinder, hydraulic brakes have a much more efficient braking mechanism to force the brake pads together when the lever is pushed.

Multiplying the amount of effort put into the lever makes it easier to brake.


The LCD display lets you easily see some parameters like battery capacity, current speed, pedal assist level, and travel distance.

It has a USB for your phone charging.



Battery Type
Samsung Lithium-ion Battery
Battery Capacity
Seat post battery 48V 10.5Ah; Tube battery: 48V 7AH
Charging Time
4-4.5Hrs/Dolphin Plus
Motor Brand
Qualisports USA Custom Manufactured 500W
Motor Torque
80 Newton meters
Max. Speed
20 mph
Display Brand
KT-7 LCD Display with USB Chraing Port
Drive Mode
Cadence Sensing Pedal Assist/Trigger Throttle (12 Magnet Sealed Sensor)-Normal Biking-Cruise-Walk Assist


63.50'' x 25.00'' x 44.09''
Folded Size
33" x 14.5" x 28.5"
Net Weight
51 lbs
Max. Load
300 lbs
Frame Type
Mid-Step, Folding
KNUS, Active
Seat Post
Custom, 57mm, Alloy (Contains the Battery)
Brake Details
Custom 2 piston Hydraulic Brakes with power coutoff
Gearing Details
7 Speed 1x7 Shimano Tourney Derailleur, MF-TZ500-7 14-28 Tooth Cassette
Prowheel Forged Alloy, 170mm Length, 52 Tooth Chainring with Plastic Guard
Tire Brand
INNOVA, 20" x 2.30"


How far can Qualisports bikes go on a single charge?

Distance differs on the terrain, weight of the cyclist, and the power mode you are using (pedal only, full Throttle, or pedal assist).

For a Single-battery Dolphin: The range is about 25 to 60 miles on a single charge using primarily electric power.
For a Dual-Battery Dolphin: The range is about 40 to 80 miles on a single charge using primarily electric power.
If you use the PAS, mileage can increase.  Some riders can achieve over 60/80miles when cycling in pedal-assist mode.

How to turn on/off the front headlight?
Turn on the LCD display, hold the display's UP button for 2-3 seconds, the headlight/LCD display background light will both be turned on.  Hold the power button the same way to turn it off.  

Is the bike pre-assembled?
95% of the bikes are pre-assembled, with detailed installation videos for the front and rear fenders.

Read more

Each piece is designed for a purpose

No parking hassle

Even in unfolded status, our brand new frame design allows you to take the New Dolphin with you to any destination.

Easy to fit in your Vehicles

Qualisports's unique frame design enable folding and transporting the bike quickly and effortlessly.

Extend your possbilities

48V 10.5AH seat post Samsung battery and an optional 48V 7AH tube Samsung battery can double your riding pleasure.

Nice combos for aviation

The smooth folding design allows powerful New Dolphin to stow in a plane's cargo hold or back seat, offering reliable ground transportation and recreation.

New design new pleasure

With brand new updates incide and outside, New Dolphin can both double your range and pleasure. You ready?