Aceoffix C5 16inch 349 5 speed Carbon Fork Folding Bike

The Aceoffix C5 is an ultralight 16" triple-folding bike weighing just 7.5kg, built around a 6069 aluminium alloy frame with a carbon fibre front fork. It's the 5-speed version of Aceoffix's carbon-fork folding bikes, aimed at short, flat commutes where every kilogram counts.

At a Glance

• Category: Ultralight triple-folding bike (adult, 16" / 349 wheel)
• Brand: Aceoffix
• Frame / fork: 6069 aluminium alloy frame, carbon fibre front fork
• Drivetrain: 5-speed external derailleur, 50T crankset
• Brakes: Front and rear rim brakes (caliper)
• Weight: 7.5kg (excl. front carrier block and pedals)
• Rider height: 140-185cm
• Best for: short, flat commutes where minimum weight matters most

The Problem It Solves

Carrying a folding bike up an apartment staircase or into a small office every day gets old fast if the bike is heavy. The C5 keeps things simple - a 5-speed drivetrain and rim brakes instead of a wider gear range or disc brakes - so the factory weight stays down at 7.5kg (excluding the front carrier block and pedals).

Who It's For

Best for riders whose commute is mostly flat and who will carry the bike up stairs daily - lower weight matters more than gear range or wet-weather braking power. If your commute includes steeper ramps or hills, or you want stronger braking in Hong Kong's rain, the 10-speed, hydraulic-disc-brake Aceoffix D10 18inch 355 10 speed Carbon Fork Folding Bike is worth the extra weight - see the comparison below.

7.5kg factory weight for daily stair carrying

The combination of a 6069 aluminium frame and carbon fibre fork keeps the factory weight down to 7.5kg (excluding the front carrier block and pedals); Jollymap weighed it at 8.15kg with pedals and front carrier block - see Jollymap's Aceoffix C5 review (in Chinese). That matters most on a bike you're carrying up and down stairs daily.

Carbon fibre fork absorbs road vibration

The carbon fibre front fork absorbs road vibration better than an all-aluminium fork, taking some of the sting out of Hong Kong's uneven pavements.

Upgraded no-thread head tube design

The threadless head tube, combined with the larger-diameter front fork, is claimed by the manufacturer to increase front-end strength by around 60% versus the previous generation, while a purpose-designed pivot bushing keeps the fold action smooth and reduces ride vibration.

5-speed drivetrain, low maintenance

A simple external 5-speed derailleur with a 50T crankset is easy to maintain and keeps the bike light, at the cost of a narrower gear range than the D10's 10-speed setup.

Aceoffix Models Compared

Here is how the Aceoffix models compare on published specs:

Sources: product information published by Aceoffix dealers in Hong Kong and overseas, and Jollymap review articles. Aceoffix has no global official spec sheet. "—" means consistent public data is not available.

Which other Aceoffix model suits you?

• Closest model: Aceoffix C5 16inch 349 7 speed Carbon Fork Folding Bike - Matt Grey - the same 6069 aluminium frame, T800 carbon fork, 16" (349) wheels and front and rear rim brakes (caliper) as this bike; the difference is two extra gears. Aceoffix quotes the same 7.5 kg (without pedals and front carrier block); Jollymap has not weighed the 7-speed version. Also listed in Chrome and Purple.
• Want disc brakes and a wider gear range: Aceoffix D10 18inch 355 10 speed Carbon Fork Folding Bike - 18" (355) Kenda knobby tyres, 10-speed (11–34T) and IIIPRO hydraulic disc brakes; 8.5 kg factory figure, about 8.7 kg as weighed by Jollymap with pedals.
• Upgraded-spec series: Aceoffix S5 16inch 349 5 speed Folding Bike - also 16" (349) wheels, 5-speed and front and rear rim brakes (caliper), listed with a carbon handlebar and Schwalbe Kojak tyres; 8 kg factory figure (pedals not specified).
• Entry-level series: Aceoffix Y5 16inch 349 5 speed Folding Bike - also 16" (349) wheels, 5-speed and front and rear rim brakes (caliper); for first-time tri-fold buyers or riders who plan to upgrade parts over time.

Further reading (Jollymap articles, in Chinese): Aceoffix C5 build, components and measured weight, Aceoffix Y5 review, Aceoffix D10 review and measured weight.

Jollymap's Advice

Aceoffix bikes use a Brompton-style frame layout, and some Aceoffix and third-party accessories (racks, easy wheels) are designed to be compatible across models - but exact fit can vary by production batch. Not sure an accessory fits your C5? Contact us before you buy. Send us your bike's colour/batch and a photo through the "Talk to us" button on our online store or our Jollymap Facebook page, and we'll check fit for you. Jollymap stocks a matching Aceoffix rack with easy wheel (for 16 inch) and Aceoffix Easy Wheel (pair); we also carry Aceoffix Seat Clamps - contact us before ordering to confirm they fit your C5. If you want more gears on the same 16"-class platform, we also carry the Aceoffix C5 349 7-speed carbon fork folding bike (also rim brakes).

Aceoffix C5 Specifications

Brand	Aceoffix
Handlebar Type	Carbon Handle
Applicable Scenario	Commuting
Gear System	5-speed
Folding Mechanism	Triple Folding
Pedal Type	CNC One-Sided Quick-Release Pedals
Frame Material	Aluminum Alloy (6069)
Rim Material	Aluminum Alloy
Rim Size	16 inches (349, for short-distance riding)
Fork Material	Carbon Fiber
Weight	7.5kg (excl. front carrier block and pedals, approx. 2% variance)
Suitable Height for Riding	140cm - 185cm
Applicable Gender	Unisex
Brake Type	Front and Rear Rim Brakes (Caliper)

Specifications source: Aceoffix and its authorised distributors' published product data - Aceoffix has not published one unified global spec sheet, so exact figures may vary slightly by batch.

FAQ

Where is Aceoffix made?

China. Aceoffix is a mainland China-based brand, and the manufacturer's product listing states Zhejiang, China as the place of origin.

What's the difference between the Aceoffix C5 and D10?

The C5 has smaller 16" wheels, a simpler 5-speed drivetrain and front and rear rim brakes (caliper), and is lighter (7.5kg factory figure). The D10 has larger 18" wheels, 10-speed gearing and full hydraulic disc brakes, at a small weight penalty (approx. 8.5kg factory figure; about 8.7kg as weighed by Jollymap with pedals). See the comparison table above.

How much does the Aceoffix C5 weigh?

The manufacturer quotes 7.5kg, excluding the front carrier block and pedals, with roughly 2% variance between units. Jollymap weighed it at 8.15kg with pedals and front carrier block.

What rider height is the Aceoffix C5 suitable for?

140cm to 185cm.

Does the Aceoffix C5 have disc brakes?

No - it uses front and rear rim brakes (caliper), which keep the bike lighter and simpler to maintain than the D10's hydraulic disc brakes, at the cost of reduced wet-weather braking power.

Is there a 7-speed version of the Aceoffix C5?

Yes, Jollymap also carries a 7-speed Aceoffix C5 349 carbon fork folding bike on the same 16" (349) wheel platform (also using rim brakes, not disc), for riders who want an extra couple of gears without stepping up to the D10.

Can I fit a rear rack or accessories to the Aceoffix C5?

Yes. Jollymap stocks a matching Aceoffix Rack with Easy Wheel (for 16 inch), plus other accessories. Send us a photo of your bike before ordering and we'll confirm fit, since exact mounting points can vary by production batch.

Is the Aceoffix C5 suitable for a first folding bike / beginner rider?

Yes - the simple 5-speed drivetrain and light weight make it easy to handle for riders new to folding bikes, provided your commute is mostly flat. For hillier routes, consider the wider-range 10-speed D10 instead.

Specifications and components follow the manufacturer's latest release and may change without notice. If in doubt, please contact us to confirm before ordering.

Last updated: October 2026