DYU C9 20 Inch Long-Range Ebike Review — Is It Worth It? [2026]
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DYU C9 20-Inch Long-Range Ebike
A foldable 20-inch fat-tire commuter with a 48V 15.6Ah battery and a claimed 150 km of pedal-assist range.
Is the DYU C9 worth buying?
If range is your main worry, the C9 is the most interesting bike in DYU's lineup. A 48V 15.6Ah pack is far bigger than the packs on the smaller folders, and the fat tires, front suspension and hydraulic disc brakes make it feel like a proper commuter rather than a toy. The price is €999 against a crossed-out €1,399. The 150 km figure is a best-case pedal-assist number, so plan on less in real riding. At 30 kg it is also not something you carry up stairs for fun.
A big-battery folding commuter
DYU sells the C9 as a comfort commuter with ultra-long range. The frame is aluminium alloy, the tires are 20 x 3.0 inch, and it comes in green (white was sold out when I looked). It folds down to 970 x 465 x 760 mm.
What makes it stand out
48V 15.6Ah for long days
The pack is the headline. DYU quotes up to 150 km in pedal-assist mode and up to 25 km/h top speed. Treat the range figure as a ceiling: rider weight, hills, assist level and cold weather all eat into it. Even at half that number you get a few days of commuting between charges.
Fat tires and a front shock
The 20 x 3.0 inch tires and a front shock absorber are there to soak up kerbs and rough tarmac. The listing mentions a suspension system for bumps and says the 250W motor can handle slopes of around 15 degrees.
Hydraulic disc brakes
Hydraulic discs are a step up from the cable brakes you often see at this price. For a heavier bike with a bigger battery, that is a sensible place to spend money.
Quick fold for storage
The frame folds to 970 x 465 x 760 mm so it fits a hallway or car boot more easily. Because it weighs 30 kg, think of the fold as a storage feature rather than a carry-on-the-train feature.
Full spec sheet
| Model | DYU C9 20 Inch Long-Range Ebike |
| Motor | 250W |
| Battery | 48V 15.6Ah |
| Max speed | 25 km/h |
| Assisted range (claimed) | Up to 150 km |
| Net weight | 30 kg |
| Max load | 120 kg |
| Frame | Aluminium alloy |
| Tires | 20 x 3.0 inch |
| Brakes | Hydraulic disc |
| Unfolded size | 1720 x 645 x 1140-1285 mm |
| Folded size | 970 x 465 x 760 mm |
| Colors | Green (White listed, sold out) |
| Warranty / trial | 12-24 months warranty; 30-day risk-free trial (per product page) |
Pros & Cons
Pros
- Large 48V 15.6Ah battery for the price.
- Fat tires, front suspension and hydraulic disc brakes.
- Folds to 970 x 465 x 760 mm.
- €999 against a listed €1,399.
- Page lists a 30-day risk-free trial and 12-24 months warranty.
Cons
- 30 kg is heavy for a folding bike.
- The 150 km range is a claim, not a tested figure.
- White color was sold out when I checked.
- Prices on the store are shown in euros; check local shipping and taxes.
- Check your local rules on e-bike power and speed before riding on public roads.
Answers before you buy
How far can the DYU C9 go on a charge?
Does it fold?
What brakes does it use?
What is the maximum rider load?
Is there a trial or warranty?
Range-first commuter at a fair price
The C9 is the bike to look at if you want one battery to cover a long commute and don't mind the weight. It is not the lightest folder, but the pack, tires and brakes are strong for €999.
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