Fiido C21 Gravel & City Electric Bike
Minimalist design, exceptional lightness, and complete freedom on city streets and gravel paths.

Who is this electric bike most suitable for?
The Fiido C21 is designed for modern urban cyclists and adventurers looking for a "Gravel" e-bike without compromising on weight and aesthetics. If you want a bike that doesn't look electric at first glance, but still offers superior assistance for tackling hills, this is your ideal choice.
With its exceptionally low weight (only 17.5 kg) and fully integrated wiring, it's perfect for those who often carry their bike up stairs or store it in an apartment. Whether you're commuting to work in the city center or exploring gravel paths on the weekend, the C21 offers precise steering and superior agility.

Seamless design and featherlight weight
Forget cumbersome and heavy electric bikes. The frame of the Fiido C21 is made from high-quality 700C aluminum alloy, with the battery seamlessly integrated. This engineering achievement keeps the bike's lines clean and minimalist, while providing the structural rigidity needed for gravel terrains.
With a total weight of only 17.5 kg (38.6 lbs), this bike sets new standards in its class. The minimalist approach continues with the wiring, which is completely hidden within the frame, not only improving aesthetics but also simplifying maintenance and protecting cables from external influences and damage.

Advanced Mivice drive with torque sensor
The heart of the bike is the silent Mivice M080 brushless motor with 250 W of power, providing assistance up to 25 km/h (limited) in accordance with road regulations. A special feature of this motor is its low-resistance technology, which means you can easily ride the bike completely analog when the battery is empty or when assistance is not needed.
However, the biggest advantage is the superior Mivice S200 Torque Sensor. Unlike cheaper cadence sensors, a torque sensor measures the actual force you apply to the pedals. The result is extremely smooth, natural, and responsive assistance that adapts to your riding style and terrain in milliseconds.

Integrated battery and optimized range
A powerful battery with DMEGC (208.8 Wh) cells is hidden in the slender downtube of the frame. Despite the smaller capacity, which contributes to the bike's low weight, the highly efficient motor and precise torque sensor ensure impressive autonomy.
When using ECO mode and under ideal conditions (75 kg rider, flat terrain, 32 °C), the bike achieves an incredible 100 km (62.14 miles) of assistance. There are 5 levels of assistance available: from ECO (100 km) to the most powerful Turbo+ mode, which will provide you with up to 34.5 km of range even under maximum effort. A reliable 36 V 2 A charger is included.

Uncompromising braking power and grip
Superior TEKTRO HD-M275 hydraulic disc brakes ensure safe stopping in all weather conditions and on all terrains. They are equipped with precise levers from the same manufacturer, providing excellent modulation and short braking distance with minimal effort on the lever.
Contact with the ground is provided by CST/KENDA 700*40C tires (size 27.6" x 1.57"). These are "knobby" puncture-proof tires that offer low rolling resistance on asphalt, while providing stable and reliable grip on loose gravel and forest trails.

Precise 9-speed drivetrain
Since the Fiido C21 is designed for varied terrain and climbing hills, it is equipped with a reliable 9-speed L-TWOO shifting system. The L-TWOO RD-5009-M rear derailleur works in perfect harmony with the SL-5009-9S shifters, ensuring fast and quiet gear changes.
The drivetrain is complemented by a large front aluminum crankset with 52 teeth (52T), a robust KMC X9 chain, and a wide range rear cassette 11-32T. This gear combination allows you to maintain an optimal cadence both when riding fast on flat ground and when climbing steep gravel hills.

HD Color Display and complete weather protection
An exceptionally bright 2.4-inch HD color LCD display is mounted in the center of the handlebars. Whether you're cycling under strong summer sun or on a cloudy, rainy day, information about speed, range, and assistance level will always be crystal clear and readable.
The entire bike boasts an IP54 protection standard. This means that all vital electronic parts (display, motor, sensors, wiring, and battery) are fully protected against dust ingress and splashing water from all directions. Your bike is ready for riding through puddles and in the rain.

Ergonomics, comfort, and perfect fit
Recognizing that proper geometry is key, the Fiido C21 is available in three frame sizes (M, L, and XL) covering riders from 160 cm to 205 cm tall. The frame withstands a high load capacity of up to 120 kg (264 lbs).
Maximum comfort on longer rides is provided by the premium anatomical VELO vacuum full-fit saddle, mounted on an adjustable aluminum seatpost (diameter 30.9 mm). The 640 mm long handlebars are equipped with 130 mm non-slip TPR grips, reducing hand fatigue and ensuring firm control over the bike.
What do you receive with your purchase?
- Fiido C21 Gravel & City Electric Bike (selected size)
- Free protective fenders
- Front LED light (Headlight) and rear light (Taillight)
- Bicycle pedals and kickstand
- Smart HD LCD display
- Original smart charger (36 V, 2 A)
- User manual
- The bike includes 2 years warranty and CE/UKCA/UL certificates.
- Service and professional support at Tržaška cesta 222, 1000 Ljubljana.
Technical Specifications
| Model | Fiido C21 (Gravel & City E-Bike) |
| Net weight | 17.5 kg (38.6 lbs) |
| Maximum load capacity | 120 kg (264 lbs) |
| Frame type | 700C aluminum alloy, integrated battery, "Urban Gravel" |
| Fork | Aluminum alloy, Thru-axle (15 mm diameter) |
| Headset | Aluminum alloy, with bearings |
| Motor | Mivice M080 brushless motor (Low-Resistance) |
| Motor power | 250 W |
| Assisted top speed | up to 25 km/h (limited) |
| Pedal sensor | Mivice S200 torque sensor |
| Battery | DMEGC cells, 208.8 Wh |
| Charger | 36 V / 2 A |
| Range (Assistance) | Up to 100 km (ECO), 58.7 km (Normal), 50.5 km (Sport), 44.5 km (Turbo), 34.5 km (Turbo+) - *data for 75 kg rider |
| Display | 2.4-inch HD color LCD display in the center |
| Water resistance | IP54 (entire bike) |
| Number of gears | 9 gears |
| Rear derailleur | L-TWOO RD-5009-M |
| Shifters | L-TWOO SL-5009-9S |
| Chain | KMC X9 |
| Front crankset | Aluminum alloy, 52T (teeth) |
| Rear cassette | L-TWOO 9S (11-32T) |
| Brakes | TEKTRO HD-M275 hydraulic disc brakes |
| Brake levers | TEKTRO HD-M275 |
| Front hub | Aluminum alloy, double bearing, "barrel axle" (15 mm) |
| Rims | Aluminum alloy, double-layer rim |
| Spokes | Stainless steel with brass nipples |
| Tires | CST / KENDA 700*40C (27.6" x 1.57"), Puncture-proof "knobby" |
| Handlebars | Aluminum alloy (Length: 640 mm, Max diameter: 31.8 mm, Min diameter: 22.2 mm) |
| Stem | Aluminum alloy |
| Grips | TPR non-slip grips, approx. 130 mm length |
| Saddle | VELO vacuum full-fit anatomical saddle |
| Seatpost | Aluminum alloy (Length: M=300 mm / L,XL=350 mm; Diameter: 30.9 mm) |
| Recommended rider height | Size M: 160-175 cm | L: 170-195 cm | XL: 190-205 cm |
| FRAME GEOMETRY (A-P) / Sizes: M | L | XL | |
| A - Seat tube length | 510 mm | 550 mm | 610 mm |
| B - Seat tube angle | 73° | 73° | 73° |
| C - Head tube | 150 mm | 170 mm | 190 mm |
| D - Head angle | 71.5° | 72° | 72° |
| E - Top tube length | 585 mm | 600 mm | 630 mm |
| F - Standover height | 800 mm | 832 mm | 878 mm |
| G - BB drop | 68 mm | 68 mm | 68 mm |
| H - Rear Center | 445 mm | 445 mm | 455 mm |
| I - Wheelbase | 1066 mm | 1077 mm | 1106 mm |
| J - Reach | 402 mm | 411 mm | 428 mm |
| K - Stack | 597 mm | 618 mm | 660 mm |
| L - Max seat height | 1045 mm | 1130 mm | 1190 mm |
| M - Min seat height | 885 mm | 920 mm | 980 mm |
| N - Total length | 1790 mm | 1800 mm | 1815 mm |
| O - Handlebar height | 1010 mm | 1010 mm | 1030 mm |
| P - Handlebar length | 680 mm | 680 mm | 680 mm |
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