Skip to product information
1 of 4


Qualisports Qualibike Dolphin 20 Inch Folding Bike

Qualisports Qualibike Dolphin 20 Inch Folding Bike

Regular price $1,299.00 USD
Regular price $1,899.00 USD Sale price $1,299.00 USD
Sale Sold out
Shipping calculated at checkout.
✓ No Sales Tax (Except in Texas)
✓ Free Shipping In The Continental USA
✓ Need Help? Contact us:
✓ Lowest Price Guaranteed!
✓ Exclusive: Get 3% off with discount code: TREQ2


Introducing the 20inch Wider Tire DOLPHIN by QualiSports.

  • It’s a high quality, lightweight bike at a surprisingly affordable price.
  • Its portability makes the DOLPHIN ideal for trips that include a stretch by bus or train – perfect for multi-modal urban transport.
  • Powerful 350W Geared Hub Motor Drive
  • Samsung 36V 14Ah Battery, 50+ Miles Range
  • Free Fenders /Head Light/ Rear Light/ Bell/ Tool Bag /Thumb Throttle / Kick Stand

The Dolphin can be ridden in four different modes:

As a normal bike, (PAS) Pedal Assist mode, Cruise control mode, or enjoy an effortless riding experience with a simple press of a trigger throttle to help you get over a hill.

The Dolphin has an efficient and strong 350W brushless geared motor which will assist you to overcome an 18-degree climb effortlessly.  Our patented stylish and stealthy seat post design is practical and hides our batteries (Samsung 36V 14Ah).  The Dolphin will give the Quali-biker’s 50 mile range on a single charge.

50+ Miles

Per Charge (optimal conditions)



Lithium-Ion Battery 



Qualisport 02 Dolphin Key Features

The Qualisport 02 Dolphin Folding Electric Bike beautifully combines power, versatility, and comfort into a truly unique package that’s comfortable in the concrete jungle and city streets.


Customized 350W high speed geared brushless motor weighs only 2.2KG yet still has 40 N.M torque, that gives you enough power to climb uphill at over an 18° incline. It’s so powerful that you don’t have to worry about hills or against wind without any sweat. What’s more, with a built-in clutch, you will never feel any magnetic resistance when riding without any power—it’s a purely comfortable ride.

Disk Brakes

Front and rear disc brakes keep you safe from any emergency with a braking distance within 3 meters. The e-bike safety lever is another safety feature on this bike, it shuts down the power system right away if you use the break.

PAS Ridng System

Multi function LCD display,12 points sensor and FOC controller work together for the PAS system. You can either ride in peddles mode, or at cruise control mode without peddling or pure bike mode if you need some exercises. The sensors can detect every  intention precisely. 

Dolphin Specs


Motor: MXUS Brushless geared DC motor

Brakes: 160mm disc brakes

Model name: QSEB 03

Rated output power: 350W

Rim: 20 inch Al-Alloy 12G36H


Motor efficiency: ≥85%

Tire:  20×2.35″

Folding Size: 32.6*18.9*27.5inch

Rated RPM: 310±10r/min

Chain wheel: Prowheel 52T


Rated voltage: 48V

Free wheel: Shimano 14-28T

Net weight: 50lbs

Max torque: 40N.m

Range: 62.5Miles(PAS)

Overcurrent protection: 15±1A

Chain: KMC

Max. load: 300lbs

Low-voltage protection: 30±1V

Handle bar: Promax

Kwh: ≤1.2Kw.h

Display: Kunteng LCD

Charging time: 6~7 Hrs

Modes: 5 levels

Controller: Kunteng sine wave FOC

Battery type: Samsung Lithium-ion

Tire diameter: 20×2.35 Inch

Brake levers: Al-Alloy e-bike 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 Pedals

Intergraded multi-function LCD display

Together with a 12 dots Cadence Sensor to help the riding experience more enjoyable. The LCD panel has the following visual indicators on it.  5 levels of PAS (Pedals Assist levels – 5 levels), battery level indicator, timer, speed, distance, average speed, trip distance, trip timer, ODO, max speed, battery voltage indicator, Lamp on/off, back lights, walking mode and cruise control mode.

Why Buy From Us

Returns are easy, simply contact us for a returns number and send your item to our returns centre for fast processing. We'll get you a replacement or refund in a snap!

We insist that you love everything you buy from us. If you're unhappy for any reason whatsoever, just let us know and we'll bend over backwards to make things right again.

Ordering from Shopyimized is 100% safe and secure so you can rest easy. Your personal details are never shared, sold or rented to anyone either.


  • Shipping: All products Ship by courier (Fedex or UPS) from the US warehouse. All products come 90% assembled. 

  • Delivery: Estimated between Mon Mar 06 and Tue Mar 0. Will usually ship within 2-3 business day.

Delivery and Returns

Please allow 10 days for your order to arrive.  We source products from all over the world to bring you epic offers and the lowest prices. This means sometimes you have to wait a little longer to get your order but it's always worth it!

Returns are easy, simply contact us for a returns number and send your item to our returns centre for fast processing. We'll get you a replacement or refund in a snap!

View full details