DYU C2 16-Inch Folding E-Bike Review
A 16-inch folding e-bike with a magnesium alloy frame and a 250W motor, listed at €549. It suits riders who want a small folding commuter with a rear rack and can accept a page that gives three weights, two batteries and two ranges.
Our verdict
Worth a look if you want a 16-inch folding e-bike at €549 with a rear rack and can work around a page that gives three weights, two batteries and two ranges. Look elsewhere if you need figures you can cross-check or a stated brake type: the outside reports describe 22-23 km/h cruising, a single gear and a throttle limit that one reviewer unlocked. The main caveat is that the spec list's 36V 10Ah, 22.5kg and 60km conflict with the header's 48V 7.5Ah, 29.6kg and 40km.
- Best for
- Riders who need a 16-inch folding e-bike with a rear rack and can work around conflicting page figures.
- Skip if
- You need consistent weight, battery and range figures or a stated brake type.
Why 3.4/5: Lifted by two outside reviews of this EU model and a page that lists motor, battery, weights, sizes and box contents; held back by the page contradicting itself on weight, battery, range and rider height, and by the store terms and reputation notes below.
Listed at €549, the C2 is a 16-inch folding e-bike with a magnesium alloy frame, 16 x 2.5-inch tires and a 250W motor. Its page is inconsistent: the spec list gives a 36V 10Ah battery, 22.5kg and a 60km assisted range, while the header gives 48V 7.5Ah, 29.6kg and 40km. Outside coverage of the EU C2 includes Youwin Blog, which reports about 40 km assisted, and a 330mm video, shot on a bike DYU supplied, whose host cruised at 22-23 km/h on a ride of about 10 km.
Specifications
| Spec | Page says |
|---|---|
| Motor | 250W |
| Battery | 36V 10Ah in the spec list; 48V 7.5Ah in the header and technical table |
| Net weight | 22.5kg in the spec list; 23.6 kg in the technical table |
| Max load | 120kg |
| Max speed | 25km/h |
| Assistant-Mileage | 60km in the spec list; the header says Max Range 40km |
| Frame | Magnesium alloy |
| Tires | 16 x 2.5-inch |
| Full size | 885 x 445 x 875 mm (spec list) |
| Expanded size | 1520 x 541 x 1087 mm (spec list) |
| Foldable size | 815 x 435 x 565 mm (technical table) |
| Brake mode | Dual Disc Brakes |
| Sensor | Speed Sensor |
| Charging time | 4-5H |
Options and pricing
One variant is listed: Blue with an EU plug at €549, in stock when the page was read, and the page shows a crossed-out price of €899. In the box the page lists the bike, an owner's manual, a charger with cable, two pedals, a multifunctional spanner and one battery, with no size given for that battery in the list. The page also describes an enlarged rear cargo rack and a height-adjustable seat.
How it compares
The DYU D3S 14-Inch Mini Folding Electric Bike is €499 with a 36V 10Ah battery and 19kg on its page, against the C2's €549 and a page that lists two batteries and three weights. The DYU T1 20-Inch Foldable Electric Bike is €699, a 20-inch folding bike with a magnesium frame, a torque sensor and 22.5kg; the C2's technical table lists a speed sensor, and the 330mm host said it seems to be a rotation sensor, not a torque sensor.
Shipping, returns and warranty
Where it sells: the shipping page names these EU countries: Austria, Belgium, Bulgaria, Croatia, Czechia, Denmark, Estonia, Finland, France, Greece, Hungary, Ireland, Italy, Latvia, Lithuania, Luxembourg, the Netherlands, Poland, Portugal, Romania, Slovakia, Slovenia, Spain and Sweden (Croatia appears twice); Germany is not on the list, and a cart test on 22 October 2026 returned no shipping rate for a German, UK, US, Swiss, Norwegian or Vietnamese address, while French, Spanish and Italian addresses got free delivery in an estimated 3 to 5 business days. Prices are in euros. Shipping: free over EUR 100, an estimated 3 to 5 business days, shipped within 2 working days from a Poland or German warehouse by FedEx, UPS or DPD (the FAQ page says 2 to 7 business days, and the Terms of Service say delivery 'may take up to 50 days'). Returns: the return page gives 30 days for a bike in its original packaging with under 10 km on the display; for a change of mind the buyer pays the return and EUR 200 per e-bike (EUR 100 per battery) is deducted, a defective bike is exchanged or refunded within 30 days, and cancelling before shipment costs 5%. The Terms of Service describe a 7-day dead-on-arrival rule, 10 days for faulty goods and 30 days for unopened items. Warranty: the warranty page gives one year from delivery for manufacturing defects: a replacement frame only (no labor), a battery repaired or replaced in year one and then a prorated credit, tires, brake pads and chains excluded, and claims by email to [email protected] with photos or video; product pages show a '12-24 Months Warranty' banner.
Before you buy
The page shows 4 customer reviews with 50% of them five-star in the store's own widget, which we could not verify. Reputation: Trustpilot lists dyucycle.com with a TrustScore of 3.7 from 209 reviews (60% five-star, 26% one-star), a profile claimed in June 2024 with a Dover, Delaware address, and says the company replies to negative reviews. Recent one-star reviews describe bikes cutting out while riding, requests for EUR 100 to 200 return fees, unanswered emails and, from a Dutch reviewer, a model that was not road legal in the Netherlands; we have not verified any of them. The registry shows dyucycle.com registered on 8 April 2021. The About page says DYU was founded in 2016 and sells in over 60 countries, which we could not confirm; the Terms of Service are governed by the laws of Hong Kong, while the contact page gives a Rotterdam office address. The page shows a crossed-out price of €899 next to its '60-Day Lowest Price Guarantee' banner; that is the store's own comparison figure.
What we liked
- Magnesium alloy frame with 16 x 2.5-inch tires and a mid-mounted shock absorption system, per the page
- A rear rack, a height-adjustable seat and an LED display for power, speed and mileage are listed
- Full, expanded and foldable sizes are all given, and the page describes a 2-step fold
- Front and rear dual disc brakes and a button throttle are listed
- Two outside reviewers report figures for this EU model: about 40 km assisted (Youwin Blog, no log shown) and 22-23 km/h cruising (330mm)
Worth noting
- The page gives three weights (22.5kg, 23.6 kg, 29.6kg), two batteries (36V 10Ah, 48V 7.5Ah) and two ranges (40km, 60km)
- Youwin Blog reports a single gear, traditional mechanical disc brakes and a throttle it calls indispensable; the page does not name the brake type
- Youwin Blog removed the factory 6 km/h throttle limit to reach 25 km/h; the page does not mention that limit, and its FAQ says the max speed setting cannot be changed
- In the 330mm video the three assist levels felt identical and 25 km/h was hard to hold; the host called it really for strolling, not performance
- The 330mm host notes that the frame must be opened to remove the battery; the page itself does not say whether the battery is removable
Questions before you buy
Which battery does the C2 have?
The page lists two. The spec list gives 36V 10Ah, while the header and technical table give 48V 7.5Ah, with a DC48V rating and a charging time of 4-5H. The box list names one battery without a size, so the page does not settle which one comes with the bike.
What rider height does the C2 list?
The product details give a recommended height of 5.24-6.39 FT and the FAQ gives 5'2-6'4; the page lists a max load of 120kg. The two height ranges are written in different formats and the page does not explain the difference. It says the seat is height-adjustable.
How is the C2 driven, and what did outside coverage find?
The page lists a 250W high speed motor, a speed sensor, a pure electric mode and a button throttle, with a max speed of 25 km/h that its FAQ says cannot be changed. The 330mm host, on a bike DYU supplied, found the three assist levels felt identical, and Youwin Blog reports a single gear.
Does DYU ship to my country?
The shipping page names 24 EU countries and prices are in euros. A cart test on 22 October 2026 gave free delivery in an estimated 3 to 5 business days for French, Spanish and Italian addresses and no shipping rate for German, UK, US, Swiss, Norwegian or Vietnamese addresses. Ask [email protected] before ordering from anywhere else.
What is the return window and what does it cost?
The return page gives 30 days for a bike in its original packaging with under 10 km on the display; for a change of mind you pay the return and EUR 200 per e-bike is deducted (EUR 100 per battery). The Terms of Service describe 7, 10 and 30-day rules, so get the terms that apply to your order in writing.
What warranty does a DYU bike carry?
The warranty page gives one year from delivery for manufacturing defects: a replacement frame only, a battery repaired or replaced in year one and then a prorated credit, and claims by email with photos or video. Product pages show a '12-24 Months Warranty' banner that the page does not explain.
Sources & verification
What this review is based on and the day we last read it. Specs and claims from the maker are the maker’s own; the verdict and the rating are ours.
From the store
- DYU C2 16-Inch Full Folding Electric Bike product page: specs, options and price (the buy buttons go there)Specs, options and the listed priceRead October 22, 2026
- DYU shipping and delivery page24 EU countries named, free over EUR 100, 3-5 business days, shipped from a Poland or German warehouseRead October 22, 2026
- DYU return and refund policy page30 days; EUR 200 per bike deducted for a change of mind; EUR 100 fee on quality returns; 5% fee when cancelling before shipmentRead October 22, 2026
- DYU warranty page1-year limited warranty: frame replacement only, battery 1 year then prorated credit, claims by email with photos or videoRead October 22, 2026
- DYU Terms of ServiceStore operated by 'dyucycle'; governed by the laws of HK; its return section (7, 10 and 30 days) differs from the return pageRead October 22, 2026
- DYU FAQ pageDelivery in 2-7 business days by FedEx, UPS or DPD; order changes before dispatchRead October 22, 2026
- DYU contact page[email protected]; office address Shannonweg 40, 3197 LG Botlek, Rotterdam, NetherlandsRead October 22, 2026
- DYU About pageMilestones as the store states them (founded 2016, Costco in the US 2018, 60+ countries); not independently confirmedRead October 22, 2026
Independent
- Trustpilot profile for dyucycle.comTrustScore 3.7 from 209 reviews, 60% five-star, 26% one-star; claimed profile; Dover, Delaware address shownRead October 22, 2026
- Verisign RDAP record for dyucycle.comDomain registration date (see the 'Before you buy' section)Read October 22, 2026
- Youwin Blog: DYU C2 foldable e-bike review, Jul 2024EU C2: boxed weight 30.22 kg, about 40 km assisted range; the author unlocked the 6 km/h throttle limit; score 7.9; Amazon affiliate and a EUR 100 codeRead October 22, 2026
- 330mm (YouTube): DYU C2 review, Jun 2024 (bike supplied by DYU)One 10 km ride, 22-23 km/h cruising; the three assist levels felt identical; 23 kg read from the specRead October 22, 2026
- Phox Rides: DYU C2 folding e-bike full review, Oct 2024Low-substance page, no test data; says hydraulic brakes, while Youwin Blog reports mechanical discs; ends with a DYU link, a coupon code and an Amazon affiliate linkRead October 22, 2026
What we couldn’t verify
- The page gives three weights (29.6kg in the header and 'Bicycle Weight', 22.5kg in the spec list, 23.6 kg in the technical table), two batteries (48V 7.5Ah header and technical table, 36V 10Ah spec list) and two ranges (40km header, 60km spec list and FAQ).
- Recommended rider height is 5.24-6.39 FT in the product details but 5'2-6'4 in the FAQ; the spec list's full and expanded sizes (885 x 445 x 875, 1520 x 541 x 1087 mm) differ from the technical table's foldable and expanded sizes (815 x 435 x 565, 1420 x 525 x 1080 mm).
- The page names disc brakes without a type; Youwin Blog reports mechanical discs, while Phox Rides (no test data) says hydraulic. Youwin Blog unlocked a factory 6 km/h throttle limit that the page does not mention, and the FAQ says the max speed setting cannot be changed.
- The store's pages disagree on returns: 30 days on the return page, and 7, 10 and 30-day rules in the Terms of Service; the return page deducts EUR 200 per e-bike for a change of mind.
- Product pages show a '12-24 Months Warranty' banner while the warranty page gives one year for manufacturing defects.
Spotted an error or something out of date? Tell us and we’ll fix it and update the date.
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