20 Inch Bikes Buying Guide

20 Inch Bikes Buying Guide

On the hunt for the perfect bike that offers versatility, size, and functionality? Look no further! In the world of bicycles, 20” bikes have carved out a unique niche. They cater to a diverse range of riders, from daring youngsters to adventurous adults. However, choosing the right bicycle in this dimension can be daunting without a proper guide.

So, in this blog, we’ll walk you through everything you need to know to make an informed decision. Ready to find the perfect 20-inch two-wheel for you?

20 Inch Bike Explained

20-inch bikes are a category of bicycles characterised by their wheel size. They feature wheels with a diameter of 20 inches. This makes them smaller than any adult bike but larger than the typical children's bike. Their popularity stems from their versatility - ideal for various ages and levels.

Age group and user suitability

Fold Folding Bike

A bike with a 20” wheel caters to a broad spectrum of riders. Typically, ranging from 6 to 12 years old, though this can vary based on a child’s height and maturity.

Additionally, there are models designed for adults who prefer a compact, agile ride. Take folding bikes, such as the Fold Folding Bike, for instance. Their adaptability is ideal for commuting or recreational cycling. This makes them a favourite for families and individuals seeking an all-purpose bike.

Available Types

When it comes to 20-inch bikes, you’ll find a diverse array of types. Here’s a brief overview of the most common ones:

BMX bikes

BMX (Bicycle Motocross) bikes are known for their sturdiness and agility. They’re designed for off-road and stunt riding. They feature a compact frame, knobby tires, and a single-speed drivetrain. These bikes are perfect for tackling jumps, tricks, and skatepark adventures.

Mountain bikes

A 20” mountain bike offers the ruggedness of its larger counterpart in a compact form. These bikes come equipped with suspension forks and durable tires. Ideal for young adventurers who want to explore off-road trails and rough terrain.

Hybrid bikes

Hummingbird Vintage Bike

Hybrid hummingbird bikes strike a balance between road and mountain bikes. They boast versatile designs with moderate tread tires suitable for various terrains. These bicycles are excellent for urban commuting, recreational rides, and light trail exploration.

Each type caters to specific riding needs. So make sure to choose the one that aligns with your intended use and preferences!

Sizing and Fit

Fold Folding Bike

Choosing the correct adult bike size is crucial for comfort and safety. To find the right fit:

  • Measure the rider’s inseam, from the crotch to the ground, in centimetres. This measurement is a key factor in bike sizing.
  • Refer to the manufacturer’s sizing chart, usually available on their website or at the bike shop. Match the inseam measurement to the recommended bike size.
  • Whenever possible, have the rider test-ride the bike to ensure a comfortable and secure fit. Ensure they can reach the handlebars and pedals comfortably while maintaining control.
  • For kids, choose a size that allows for some growth. Ensure it won’t compromise safety and comfort. Follow this kids bike size guide for reference.

By following these steps, you can select a kids bike that offers the best fit for the rider’s size and riding style.

Frame Materials

Two common frame materials for 20-inch bikes are steel and aluminium. Each comes with its own set of advantages and drawbacks:



  • Durability: Steel frames are robust and can withstand rough handling.
  • Smooth ride: They offer a comfortable, vibration-absorbing ride.
  • Affordability: Generally more budget-friendly.


  • Heaviness: Steel frames are heavier than aluminium, which can make the bike less agile.
  • Susceptible to rust: They may rust if not properly maintained.


Fold Folding Bike


  • Lightweight: Aluminium frames are lighter, enhancing manoeuvrability.
  • Rust resistance: They don’t rust easily.
  • Speed: Aluminum’s stiffness can translate to better speed.


  • Less vibration damping: They may transmit more road vibrations.
  • Cost: Typically pricier than steel frames.

Choosing based on needs

Select steel for durability and cost-efficiency, ideal for BMX and rugged use. Opt for aluminium for lightweight agility, perfect for road and hybrid bikes. The choice ultimately depends on your riding preferences and budget.

Components and Accessories

1. Brakes

Reliable brakes are a must. Rim brakes are common and affordable. Meanwhile, disc brakes offer superior stopping power, which is great for off-road use.

2. Gears

Gears provide versatility. Single-speed bikes are low-maintenance and suitable for flat terrain. Multiple gears are ideal for hilly areas or versatile riding.

3. Tires

Choose tires based on your riding style. Knobby tires provide a grip for off-road adventures. In contrast, slick tires offer less resistance for smoother rides on pavement.

Optional accessories for safety and comfort

Fold Folding Bike

Consider these components and accessories to tailor your 20-inch bike to your needs.

Where to Buy

When it comes to sourcing top-quality 20-inch bikes, you have a few excellent options:

1. Local bike shops

Your nearest bike shop is a great place to start. They often provide personalised advice and fitting services. Some even offer a chance to test-ride bikes.

2. Online retailers

Bobbin offers a wide range of bikes with the added advantage of online convenience. They may also provide test ride opportunities and excellent customer support. Bobbin brings the bike shopping experience to your fingertips.


In your quest for the perfect 20-inch bike, you’ve discovered a world of versatility and choice. With the help of this guide, you can make an informed decision. A well-chosen 20-inch kid's bike can be your faithful companion on countless journeys! Remember to prioritise safety with the right gear and factor in maintenance costs.

Discover more bike sizes, such as 26 inch bikes and 700c bikes. And don’t overlook the importance of outfitting yourself with a Bobbin bike helmet.

Next on your reading list: How Big Is a 700C Wheel?

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