base 20 | 20 inch bike
Age 5.5 - 8 years | Child Height 113 - 133cm
With 7 gears and weighing only 8.5kg, this ultralight, easy-to-ride 20 inch bike combines a low, stable geometry with top-notch components for long-lasting performance.
Seriously lightweight at only 8.5kg
Five year frame and fork warranty
$39 flat rate shipping*
No risk, free, easy 100-day returns
Why Kids (and Parents) Love it
Easy to Ride
Low centre of gravity (easier to balance), ultra-light (easier to push off and control), and 7-speed smooth Shimano gears, are just a few reasons the base 20 is the easiest bike to ride.
Lightweight, only 8.5kg
The base 20 is a trailblazer in lightweight design for kids, weighing only 8.5kg. This builds confidence through improved manoeuvrability, easier handling, and reduced fatigue for young riders.
Geared up
Smooth shifting 7-speed Shimano gears help them conquer hills and longer rides with confidence.
Safe stopping
Powerful and safe stopping is ensured with high-quality front and rear Tektro V-brakes.
Grows with them
Designed with growing boys and girls in mind, the seat is fully adjustable and can be easily raised or lowered using the quick-release mechanism. Like an adult bike, it also allows forward and backward adjustments and can be tilted.
The handlebars can be rotated to optimise and adjust the reach and height as your child grows.
Long lasting and durable
Built to withstand the Australian outdoors with durable materials like stainless steel spokes with brass spoke-nipples, a fully sealed bottom bracket with steel cups and a semi-integrated threadless headset.
Combined with premium components like Shimano gears, Tektro brakes, Kenda tires, ProWheel cranks, and a KMC chain, the base 20 is made to last—perfect for passing down to younger siblings or reselling later on
*Please note that we currently do not offer standard shipping to remote or some regional locations. If your shipping address falls within these areas, you will be notified at checkout and we will be happy to provide a personalised shipping quote.
“Base Bikes comes out swinging with all features: Light weight alloy frame, freewheel, low BB, short\small q-factor cranks, small diameter grips, threadless headset and easy pull Kids Tektro V brakes.
”
The bike dads review
More Information
Detailed Description
Frameset
Crafted from premium, ultra- lightweight 6061 grade Aluminium, our bike is designed with a low centre of gravity for enhanced balance and a long wheelbase to boost stability. This thoughtful design not only makes it easier for kids to handle but also provides ample room for growth.
The total bike weight, including the pedals, is 8.5kg!
Wheels and Tyres
Super lightweight alloy rims with durable stainless steel spokes to prevent rust and Australian Standard compliant Cateye reflectors on each wheel.
Kenda Small Block 20*1.5 inch tyres with low rolling resistance and great for paved and light trail use.
7-speed rear cassette
Equipped with a Shimano 7-speed rear cassette for smooth transition between gears, making it easier for children to tackle various terrains and longer rides.
Shimano grip-shift 7-speed drivetrain with wide-span 14-28T gearing. We've equipped the bike with a grip shifter for gear changes, as its intuitive design makes it easier for kids who are just learning to navigate through gears.
Drivetrain
A sealed bottom bracket with steel cups for longevity, a Prowheel 34T chainwheel with a double-sided chain guard to prevent little fingers from getting stuck in the chain. The narrow Q-factor (the horizontal distance between the pedals) is ergonomically adapted for children’s bodies, ensuring natural movement and optimal pedalling efficiency.
Saddle
Child-proportioned with a lightweight alloy stem. The saddle can be adjusted forwards and backwards and the seat angle tilted, meaning maximum flexibility for growing children and the longest possible lifespan for growing kids on the bike.
The seat post also has a clear, minimum insertion line, and a rear Cateye reflector, to keep safety a priority.
Handlebars
54 cm wide for stable riding, black anodised for maximum durability, lightweight and adjustable, with a thinner grip to suit little hands and the inclusion of a locking clamp to keep the grips safely in place.
A bell and front (and rear) Cateye reflectors are included and arrive already attached.
Headset and Stem
A NECO 28.6 mm threadless headset with sealed bearings for durability, designed to withstand the rugged Australian outdoors.
A lightweight stem with 40 mm extension and 3-degree rise, ensuring a secure connection between the handlebars and the headset with a sleek, rounded design.
Brakes
Tektro J310 V-brakes front and rear with child friendly Tektro micro-reach JL-350 brake levers for maximum quality and longevity.
Components / Specifications
Frame: Lightweight 6061 Aluminium.
Fork: Aluminium with alloy steerer.
Brakes: Tektro J310 V-brakes front and rear with Tektro micro-reach JL-350 brake levers.
Freewheel / cassette: 14-28T, steel, free-wheel.
Chainwheel: Prowheel, 32T with 115 mm alloy cranks, narrow q-factor.
Bottom bracket: sealed bearings with steel cups and aluminium sheath.
Headset: NECO, sealed bearings, 28.6 mm diameter.
Rims: Lightweight Aluminum
Tyres: Kenda K1047 Small Block Eight 20 x 1.5
Grips: 22.2 mm diameter with lock-on clamp.
Seat: Selle Royal, kids comfort saddle.
Handlebar: 540 mm wide with 40 mm rise.
Stem: 40 mm extension, 28.6 mm bar bore (for steerer).
Pedals: ball bearing with Australian Standard Cateye reflectors.
Included accessories: front, rear and wheel Cateye reflectors. Child friendly bell.
Optional accessories: Includes standard frame mount for a kick-stand (kick-stand not included). Check with accessory supplier to confirm compatibility.
Total weight: 8.5kg (with pedals).
Weight limit: 60kg (bike, rider and cargo).
Note that some components may differ from those listed. Reach out if you would like to double check anything. Don't forget you're covered by ourNo Risk Easy 100 Day Returns.
Bike size guide
The base 20 is generally ideal for kids aged 5.5 to 8 years, or between 113cm and 133cm tall.
We recommend a minimum inseam of 52cm, but for new or cautious riders, or if you are intending to use the pedal bike in balance bike mode initially (without the pedals), an inseam of at least 55cm will offer more comfort and confidence.
More information is available in our full size guide.
Remember, you’re covered by our 100 day easy returns if it’s not quite the right fit.
Shipping
$39 flat rate shipping on all bikes*.
Free shipping on accessories ordered with a bike.
Once your order is dispatched, you will receive an email with your tracking details. Please note that the tracking number may take several hours to activate.
The estimated delivery time is 2 to 8 business days after dispatch. We aim to dispatch all orders within 3 business days.
We only post within Australia at this time.
*Please note that we currently do not offer standard shipping to remote or some regional locations. If your shipping address falls within these areas, you will be notified at checkout and we will be happy to provide a personalised shipping quote. We do not post to PO Boxes due to carrier restrictions.
Assembly - 10mins box to ride
The bike comes almost ready-to-roll. For base 16 and base 20, you will just need to attach the pedals and rotate and secure the handlebar.
We include the tools you will need and a bike manual describing these assembly instructions.
Refer to our assembly video guide for all the help you need.
Note that some components may differ from those listed. Reach out if you would like to double check anything. Don't forget you're covered by our No Risk Easy 100 Day Returns.