Used Kids Bikes: Buyer's Guide UK

Why Used Kids Bikes Make Sense

Children outgrow bikes every 18 months or so. A new kids bike from a good brand costs £280 to £600. That is a lot of money for something your child will have outgrown by the time they have learned to ride it properly. Buying used is the obvious answer, and the market is full of bikes that have barely been ridden.

The maths is simple. Buy a decent used bike for £80 to £200. Ride it for a year or two. Sell it on for roughly what you paid. The actual cost of ownership lands somewhere between free and very cheap. Meanwhile your child learns on a bike that fits properly and works, rather than a £120 supermarket special that is heavier than they are.

One rule matters more than anything else. Do not buy a bike that is too big on the assumption that your child will grow into it. Bikes that are too big are harder to balance, harder to stop and genuinely dangerous. Buy the right size now, sell it when they grow out, buy the next size. Cyclesite sold bike prices make this cheap over time because good kids bikes hold their value.

Sizing by Age and Inseam

Kids bikes are sold by wheel size, not frame size. Forget the age labels printed on packaging. They are marketing. Use inseam measurements instead. Sit your child on a chair barefoot, measure from the floor to their crotch with a book pressed up like a saddle. That number is the inseam, and it tells you the minimum saddle height the bike must be able to drop to.

Balance bikes (no pedals). Inseam around 30cm to 40cm. Typical ages 18 months to 3.5 years. The best first bike ever invented. Skips stabilisers entirely and teaches real balance in weeks.

12 inch wheels. Inseam 35cm to 42cm. Typical ages 3 to 4.5. First pedal bikes. Usually single speed with a coaster brake, sometimes with a hand brake too.

14 inch wheels. Inseam 40cm to 50cm. Typical ages 4 to 5.5. A useful sizing gap between 12 and 16 inch, not every brand makes them.

16 inch wheels. Inseam 45cm to 55cm. Typical ages 4.5 to 6.5. The most important size to get right, this is when most children graduate from balance bikes to proper pedal bikes.

20 inch wheels. Inseam 55cm to 65cm. Typical ages 6 to 9. First geared bikes appear here, usually 6 or 7 speed.

24 inch wheels. Inseam 65cm to 75cm. Typical ages 8 to 12. Proper geared bikes, real components, real brakes. The bike your child will learn to love cycling on.

26 inch wheels or small adult frames. Inseam over 72cm. Typically age 11 plus. At this point most children can fit a small adult hybrid, mountain or hardtail.

Measure, do not guess. A bike that is one size too big is not a bargain. It is a reason your child will avoid riding.

The Brands Worth Knowing

Lightweight Kids Specialists

Frog Bikes are British, lightweight and expensive new (£300 to £500) but hold value brilliantly on the used market. A two year old Frog in good condition typically sells for 60 to 75 percent of new price. The geometry and ergonomics are designed around children rather than scaled down from adult bikes.

Islabikes pioneered the lightweight kids bike category in Britain. The founder, Isla Rowntree, obsessed over weight and child specific geometry for years. The company has now closed for new sales but the used market is huge because parents keep passing them down. Genuinely excellent bikes.

Early Rider specialise in balance bikes and first pedal bikes. Aluminium frames, oversized bearings, premium components. Expensive new, fantastic used.

Woom is Austrian and aims at the same lightweight enthusiast segment. Widely available used in the UK now that the brand has been selling here for several years.

Mainstream Brands That Also Make Good Kids Bikes

Specialized Riprock and Hotrock are the default sensible choice at most bike shops. Widely available used, reliable, properly supported.

Trek Precaliber, Wahoo and Roscoe offer a similar experience. Good geometry, decent components, easy to find used.

Giant XTC Jr and Liv Enchant are sensible value options. Not as lightweight as Frog or Islabikes but solid and affordable used.

Cube Acid and Kid 240 are good value and increasingly common in the UK used market.

Brands to Approach Cautiously

Supermarket own brands, generic Argos bikes and no name cheap bikes from Amazon are almost always too heavy, poorly assembled and unreliable. Children struggle to ride heavy bikes. The sizes are often wrong. Brakes do not work properly. The false economy is brutal. A used £120 Specialized Riprock rides immeasurably better than a new £150 supermarket bike.

What to Check Before Buying

Children crash. Used kids bikes often show it. None of the following should be dealbreakers on their own, but all should factor into the price:

1. Brakes. Squeeze both levers. Do they stop the bike firmly? Are they within reach of a child hand (brake levers on good kids bikes have adjustable reach)? Coaster brakes on 12 and 16 inch wheels should engage smoothly when you pedal backwards.
2. Tyres. Cracked, perished or flat tyres are cheap to replace (£10 to £25 per tyre) but factor them into your offer. Bikes that have sat in a shed for two years nearly always need new rubber.
3. Chain and drivetrain. Rusty chains clean up or get replaced for £10 to £25. Worn sprockets on cheap single speeds can be replaced. Geared bikes with worn drivetrains cost more to fix so check carefully.
4. Frame condition. Look for dents around the top tube, cracks around welds, and play at the head tube (front suspension bikes especially). A slightly scuffed frame is fine. A bent or cracked frame is not.
5. Bearings. Spin both wheels, pedal the cranks with the bike held up, and rock the bike holding the front brake. Grinding or roughness anywhere means bearings need attention. Not necessarily a dealbreaker but factor in £20 to £60 depending on what needs doing.
6. Saddle height range. Can you drop the saddle low enough for your child to put both feet flat on the ground? This is non negotiable for first pedal bikes. If the saddle will not drop far enough, the bike is too big.
7. Grips and bar tape. Cosmetic but cheap. Grubby or torn grips are £4 to £10 to replace.
8. Frame number check. Yes, even on kids bikes. Stolen kids bikes are resold regularly. A two minute stolen-bike check is worth it.

What You Should Pay

Kids bike prices depend heavily on brand and condition. Use these as rough guides for bikes in good working order:

• Balance bikes: £20 to £70 for branded models (Strider, Early Rider, Frog Tadpole). Supermarket balance bikes free to £20.
• 12 to 14 inch wheels: £50 to £150. Frog and Islabikes at the top, Specialized and Trek in the middle, value brands below.
• 16 inch wheels: £80 to £200 for a good used Frog or Isla. £60 to £120 for Specialized, Trek or Cube. £30 to £60 for older value brands.
• 20 inch wheels: £100 to £250 for premium. £70 to £150 for mainstream. £40 to £90 for older value brands.
• 24 inch wheels: £120 to £350 for premium lightweight models with good components. £80 to £180 for mainstream brands.
• 26 inch wheels and small adult frames: £150 to £500 for a proper small hardtail or hybrid. Good used mountain bike prices start applying here.

Children's bikes hold their value well compared to adult bikes because demand is constant and good bikes are scarce. Buy well, maintain properly, and selling on recovers most of your outlay.

Selling On When They Grow Out

Good used kids bikes sell in days on Cyclesite. The pattern most parents follow works:

1. Wash the bike properly.
2. Replace worn grips (£5) and any dead inner tubes.
3. Give the drivetrain a clean and a fresh drip of oil.
4. Photograph in daylight with the whole bike visible.
5. List honestly with any cosmetic marks clearly shown.
6. Price sensibly against current listings.

Most parents recover 60 to 80 percent of what they paid if they bought a decent brand in the first place. Some see practically zero depreciation on Frog and Islabikes if they sell within a year or two. That turns the cost of kids cycling into something almost free, which is the closest thing to a free lunch in parenting.