Solar 140S 14 inch Folding Bike (7 speeds)

The Solar 140S is a 14-inch, 7-speed aluminium folding bike from Hong Kong brand Solar Bicycles, weighing about 10.3 kg and folding to 61 x 35 x 65 cm. The frame, folding stem, seat post and rims are aluminium, with a 7-speed twist shifter, so children can learn to use gears on family rides and the bike folds away into a car boot or a corner at home afterwards.

At a Glance

• Category: 14-inch kids' folding bike, 7-speed
• Brand: Solar Bicycles (locally designed Hong Kong bike brand)
• Weight: approx. 10.3 kg (Solar official)
• Folded size: 61 (L) x 35 (W) x 65 (H) cm (Solar official)
• Key parts: aluminium frame, adjustable aluminium folding stem, aluminium handlebar and seat post, aluminium rims, 7-speed twist shifter, front and rear V-brakes, front and rear mudguards
• Best for: children who can already ride and want to try gears, and families short on storage space or who often carry the bike in the car

What Problem Does It Solve?

A standard kids' bike doesn't fold, so it takes up space in a Hong Kong flat or car boot. The Solar 140S folds to just 61 x 35 x 65 cm: keep it in a corner during the week, then put it in the car for weekend rides on cycle tracks such as Tai Mei Tuk or the Shing Mun River in Sha Tin. The 7-speed twist shifter lets your child drop to an easier gear when the path climbs.

This compact bike is ideal for use as a commuting bike in urban environments, where it can be easily folded and stored when you have reached your destination. With built in mud guards to keep you clean and an easy and reliable folding mechanism.

Who Is It For?

Solar does not publish a recommended rider height, age or maximum load for the 140S. The saddle height is adjustable; contact us before ordering with the rider's height and leg length and we'll help confirm the fit. For a taller child, or if you want bigger wheels and a lighter bike, compare the 16-inch Sooibe 009 16" 6Speed Super Light Kids Folding Bike below.

Aluminium main parts

The frame, folding stem, handlebar, seat post and rims are all aluminium, keeping the bike to about 10.3 kg so it's easier to lift into a car boot or carry up stairs.

7-speed twist shifter

Gears change with a twist of the grip on the handlebar. Shift to an easier gear for climbs and a harder one on the flat to ride further.

Compact fold

Both the stem and the frame fold, bringing the bike down to 61 x 35 x 65 cm, small enough for an entrance hall, balcony or car boot.

Mudguards and V-brakes

Front and rear mudguards keep spray off clothes, and front and rear V-brakes are operated from the levers on the handlebar.

Solar 140S vs Sooibe 009 16" vs Mint Bob 7

Here are three small-wheel folding bikes compared; choose by your child's height, the weight you're happy to carry and how you'll use it:

Sources: Solar Bicycles official product page, Sooibe official product page and spec sheet, Jollymap Mint Bob 7 product page.

Jollymap Recommendation

The Solar 140S folds small, comes with mudguards, and has 7 gears for learning to shift, which suits family outings and homes with limited storage. If your child is already tall, or you want a lighter 16-inch folding bike, compare the Sooibe 009 16". Not sure which fits? Before ordering, chat with us or message our Facebook page with your child's age, height and leg length.

Specifications

Solar 140S
Brand	Solar Bicycles (Hong Kong)
Wheel size	14 inch
Gears	7-speed, twist shifter
Frame	Aluminium
Stem	Adjustable aluminium folding stem
Handlebar and seat post	Aluminium
Rims	Aluminium
Weight	approx. 10.3 kg
Folded size	61 (L) x 35 (W) x 65 (H) cm
Brakes	Front and rear V-brakes (per official product photo)
Mudguards	Front and rear (per official product photo)

Specifications source: Solar Bicycles official product page (solar-bicycles.com). All accessories are subject to factory production; measurements may vary slightly due to different measuring tools; pictures are for reference only. *Components and parts may vary in different production batches. Enquiry is welcome.

"Easy Take" Bike Delivery Service

- Bike 100% assembled

- Easy and comfortable to pick up

- Anti-collision packaging for protection

You can select the "Easy Take" Bike Delivery - Home Delivery or Drop Off Point in the Checkout Page.  

Please click here for more details.

為小朋友選擇兒童單車不可不知的6大因素

From now on, every purchase of children's bicycle, tricycle, scooter or balance bike, we will sponsor one kid from deprived group to play in Playscope of Playright.

FAQ

What are the Solar 140S weight and specs?

According to Solar, the 140S weighs about 10.3 kg, has 14-inch wheels and a 7-speed twist shifter, an aluminium frame, folding stem, seat post and rims, and folds to 61 (L) x 35 (W) x 65 (H) cm.

Can adults ride the Solar 140S?

Solar does not publish a recommended rider height or maximum load for the 140S, so we can't confirm it suits adults. Jollymap lists the 140S as a kids' folding bike; if you plan to use it for an adult or a tall teenager, contact us before ordering with the rider's height and weight.

Can I fit training wheels to the Solar 140S?

Yes, sold separately. Jollymap's "Solar 12-inch and 14-inch kids' folding bikes" video on this page notes that these bikes can take training wheels. Jollymap sells Bicycle Training Wheels; contact us before ordering to confirm they fit the 140S.

Can I take the folded Solar 140S on the MTR or a bus?

The MTR limits luggage to a combined length, width and height of 170 cm; the 140S's official folded size is 61 x 35 x 65 cm, a total of 161 cm (Solar doesn't state whether this includes the pedals). Franchised buses generally restrict bicycles: section 14 of the Public Bus Services Regulations (Cap. 230A) only allows items within 5 kg and 0.1 cubic metres, and the 140S weighs about 10.3 kg. Minibuses are not guaranteed either. Check the Transport Department Cycling Information Centre ("Carrying bicycles on public transport") and the operator's latest rules.

What's the difference between the Solar 140S and the Sooibe 009 16"?

The Solar 140S has 14-inch wheels and a 7-speed twist shifter at about 10.3 kg; the Sooibe 009 16" has larger 16-inch wheels, a 6-speed Shimano drivetrain and weighs 9.2 kg, with an official rider height of 110-175 cm. Choose the Sooibe for a taller child, bigger wheels or a lighter bike; choose the 140S for 7 gears on smaller wheels.

Where is Solar from?

Solar Bicycles is a locally designed Hong Kong bike brand. Its official website (solar-bicycles.com) says the brand has 30 years in the bicycle trade, with kids' bikes, folding bikes, small-wheel bikes, mountain bikes and road bikes.

What is the Solar 140S best used for?

Family outings, short rides on cycle tracks or in parks, and any situation where the bike needs to be folded often or carried in a car. For long climbs or longer distances, a bike with bigger wheels is a better fit.

Where can I buy the Solar 140S in Hong Kong?

Jollymap sells the Solar 140S online and in store. To check colours and sizing before ordering, chat with us or message our Facebook page.

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