My full review of the Dyu C9
- Twice The Bikes (Tigo)
- Sep 19, 2025
- 3 min read
The DYU C9 is a foldable electric bike that immediately impresses with its design. The metallic paint sparkles in the sunlight, giving it a premium feel that you rarely see at this price point. Subtle indoors, but striking outdoors, it stands out among budget-friendly foldable e-bikes.
Riding Position and Comfort
The riding posture on the DYU C9 is upright and casual, perfect for city cruising. The saddle is padded enough to be comfortable for longer rides, and the overall position feels natural for commuting or casual trips.
At lower speeds, the bike is stable, easy to control, and confidence inspiring. When you push past twenty-three kilometers per hour, the bike feels a little top-heavy. It is not unsafe, but it can feel slightly wobbly at higher speeds, so keep this in mind if you plan to ride fast.
Motor and Battery
The DYU C9 is powered by a 250-watt motor paired with a 48-volt, 15.6 amp-hour battery. On paper, this combination allows up to 150 kilometers of range with pedal assist. In real-world city riding, expect closer to fifty to seventy kilometers, which is excellent for a foldable bike in this class.
The motor delivers plenty of power for city hills and quick accelerations, making commuting or weekend rides effortless.
Brakes and Safety
The hydraulic disc brakes on the C9 are a standout feature. They provide firm, consistent stopping power, giving riders confidence when navigating traffic or riding at higher speeds. This is a notable upgrade compared to cheaper mechanical braking systems.
The display is simple but effective, showing speed, battery level, voltage, and pedal assist mode. A small safety switch prevents the bike from accidentally powering on while folded or being transported, a thoughtful touch that adds polish to the design.
Folding Design and Portability
The DYU C9 folds down compactly, making it easy to store in a car trunk, a hallway corner, or under a desk at work. At around thirty kilos, it is not featherlight, but the portability is still a major advantage for urban riders.
Ride Quality and Performance
The three inch fat tires smooth out small bumps, and the overall geometry feels comfortable for medium-distance rides. The bike is not designed for hardcore off-road use and may feel cramped for riders taller than 190 centimeters, but for city commuting and casual cruising, it performs very well.
The pedal assist system has a slight delay of about half a second before the motor engages, which is noticeable but not a dealbreaker. The battery mounting is secure enough for daily use but could feel sturdier.
Final Verdict
The DYU C9 is a foldable city cruiser that balances style, practicality, and range. Its highlights include:
Metallic paint with a premium finish
Comfortable upright riding position
Hydraulic disc brakes for confident stopping
250-watt motor with decent acceleration
Compact foldable design for storage and portability
Realistic range of fifty to seventy kilometers
It is not perfect, with minor issues like the battery mount and pedal assist delay. However, for urban riders seeking a stylish, practical, and long-range foldable e-bike under one thousand euros, the DYU C9 is one of the strongest options in its class.
Thanks for tuning in, and a big shoutout to DYU for letting me try this bike. If you are interested in checking out the C9, there is a link in the description below. Until next time, ride far, ride fast, and ride forward.
Try the C-9 Yourself!
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