Fiido X Upgraded 350W Lightweight Folding Electric Bike

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350W AIKEMA Brand Rear Hub Motor w/ Torque Sensor

36V/11.6Ah Seat Post-Integrated Removable Lithium-ion Battery

7-Speed Shimano Gears w/ 3-Level Pedal Assist System (PAS)


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Fiido X Upgraded Description

The Fiido X Upgraded is a very unique electric bike. Weighing just 37 lbs, it is one of the lightest folding ebikes on the market today, and yet it's packed with features not found on ebikes that are twice its price.

The sleek magnesium alloy frame includes an integrated LED headlight and brake light, and the battery is hidden within the locking seat tube. The hinge and handle of the folding mechanism are also align with the smooth lines of the frame, giving the Fiido X a truly elegant appearance. 


fiido x folding ebike


But don't let looks fool you. The Fiido X electric bike has a beefy 350W motor in the rear hub, which is ready to assist you when pedaling up hills or against headwinds. The 3-level pedal assist system (PAS) uses a torque sensor for precise control, working seamlessly with the 7-speed Shimano drivetrain (gears).

The seat tube-integrated battery uses a unique power rail system that eliminates external cables connecting the battery to the motor, as found in earlier design iterations such as the model D11. The rails are engaged simply by locking the seat tube in place with the quick release lever. That means when you insert the seat, the same action that locks the seat at your desired height also invisibly performs the electrical connection to the battery.


fiido x folding electric bike


The Fiido X is perfect for anyone who needs a lightweight, highly portable electric bike for their next ride. A favorite with college students and RVers alike, the Fiido X packs a lot of innovative features into a very affordable package.

Fiido X Upgrades

In early April, 2022, Fiido received a report of a faulty Model X frame from a US customer. Sales of the Model X were immediately suspended, and the company began a thorough investigation and testing, leading to significant upgrades to the design of the frame and its folding mechanism.

Following are the specific improvements made to the Model X.

  1. Before 6.5mm, new 12mm. Increase the contact area by approximately 84.6%. Lowered the pressure of the frame by increasing the contact area between the axle and the frame, to improve the strength of the frame.
  2. Before 14mm, new 18mm. Increased the thickness by approximately 28.6%.
  3. Before 16mm, new 18mm. Increased the thickness by approximately 12.5%.

  1. Before 3mm, new 7mm. Increased the thickness by approximately 133%.
  2. Before 3.5mm, new 7mm. Increased the thickness by approximately 100%.
  3. Before 7mm, new 8.5mm. Increased the thickness by approximately 21.4%.
  4. Before 6mm, new 7mm. Increased the thickness by approximately 16.7%.

Increased the diameter of the axle, to enlarge the contact area between the axle and frame, which will lower the pressure of the frame and improve the strength of the frame.

There’s a hole in the fracture area of the old frame, which weakened the strength of the fracture area. On the upgraded frame the hole is removed to enhance the strength of the frame.


Input a wear-resisting steel bushing into the frame, to prevent the axle from touching the frame directly, so as to avoid the looseness after abrasion or deformation. Keeping the front and rear triangles are always in a close state, to improve the strength of the frame.

The upgraded design improves the mechanical strength of the folding structure greatly, while reducing the abrasion between the folding structure and the frame. The modification and tests involved CNC of mold and folding parts, a use test, fatigue test and transportation loss test.

Fiido X Upgraded Specifications

  • Motor: 350W AIKEMA Brand Rear Hub Brushless Motor w/ Torque Sensor
  • Battery: 36V/11.6Ah DMEGC 18650 Seat Tube-Integrated Removable Lithium-ion Battery
  • Charge Time: 7 Hours
  • Display: LED Display w/ USB Charging Port
  • Frame: Injection Molded Magnesium Alloy Folding Frame w/ Built-in Smart Code Lock (keyless) Anti-Theft System
  • Gears7-Speed Shimano Gears
  • Power Assist System: 3-Level Pedal Assist System
  • Brake: Hydraulic Disc Brakes w/ Auto Motor Inhibitors
  • Tire: 20” x 1.95”CST Tires
  • Chain: Forged 52 Tooth Alloy Chainring
  • Accessories: Integrated LED Front White & Rear Red Lights, Fenders
  • Grips: Rubber
  • Accessories: Front & Rear Lights, Kickstand
  • Handlebar | Pedals: Aluminum Alloy
  • Rim: Double-Wall Alloy
  • Max. Speed: 15.5 mph
  • Seat Height: 33" - 42.9"
  • Recommended Rider Height: 5'-0" - 6'-5"
  • Bike Size: (L x W x H) 58.6” x 23.2” x 39.4”
  • Folded Size: (L x W x H) 31.1” x 13.8” x 31.5”
  • Weight: 43.6  Lbs.
  • Max Load Capacity: 265 Lbs.
  • Box Dimensions & Weight: 57.8" x 8.8" x 28.3" (55 Lbs.)
  • Box Contents: Fiido X Ebike, Charger, Pedals, Adapter, Open Spanner, Allen Key, Fenders
  • Assembly: This ebike comes mostly assembled. Final assembly includes attachment of the pedals and fenders
  • Tools RequiredOpen Spanner & 1mm - 6mm Hex (Allen) Keys (Included)
  • Warranty: 1-Year
  • Shipping: Free shipping to the lower 48. We cannot ship this brand to Alaska or Hawaii at this time. For shipments to Canada, please email your shipping address to

Fiido X User Manual


Fiido X Electric Bike Review

We are always glad when an independent ebike reviewer covers one of the bikes we carry, since they can identify the pros and cons of the model based on their extensive testing. In this case, we can benefit from the insights of Micah Toll from Electrek. His review of the Fiido X is worth your time.




Orders for in-stock items take 24-48 hours to process, then about 5-7 days in transit. Delays due to Covid have occurred. If an item is on backorder, the estimated ship date will be shown below the Pre-Order Button.

All products are shipped free within the Contiguous US via UPS, FedEx or similar carrier. Shipping to AK, HI and PR may incur additional charges.

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Returns for buyer’s remorse are typically not accepted by our suppliers, and if accepted, the customer may incur shipping and restocking fees.

Please click here to read our entire Shipping & Returns Policy.


Ask a Question
  • Hi! Can you tell the height of the step-over bar on this mini bike? Thank you!

    About 28".

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    Best Lightweight Folding Ebike

    I am amazed at how lightweight this ebike is. It's so much fun to ride, and easy to transport. Thanks.

    Cammie H.
    United States United States

    Really Good Ebikes

    Thank you Cammie.