ByK kids bikes

Melbourne-based ByK founder Warren Key has designed the best range of kids bikes available in Australia. They're light, easy to ride, and kids love them.

Omafiets Lifetime Service Guarantee and Trade-Ins

Our ByKs are backed by the Omafiets Lifetime Service Guarantee - as long as you own a ByK bike, we'll service it for free (including parts!). In case you're worried about your child growing out of their bike too quickly, we offer guaranteed trade-in prices for ByKs purchased from us, towards the next size up - 50% within 1 year and 30% within 3 years.

What size bike?

What size ByK is appropriate for your child? This table shows the ages and recommended heights for the bikes in the ByK range. If your child is in an overlapping age range, choose a bike based on their bike-riding ability and experience (or come into the shop and try them out!).

 Bicycle Age range Height range
E-200L Balance Bike 2 - 4 years
E-250L Balance Bike, E-250, E-250 MTB 2.5 - 5 years
E-350, E-350 x 2i, E-350 MTB 4 - 6 years 95 - 117cm
E-450, E-450 x 2i, E-450 x 3i,  5 - 8 years 110 - 132cm
E-450 x 8, E-450 MTB 6 - 9 years 115 - 145cm
E-540 x 3i, E-540 x 16, E-510 MTB, E-540R 7 - 11 years 130 - 160cm
E-620 x 3i, E-620 x 16, E-560 MTB, E-620R 10 - 14 years 142.5 - 175cm

Here's the ByK range:

ByK E-200L Balance Bike ByK E-200L Balance Bike Quick View

ByK E-200L Balance Bike

$189.00

Color
Lime green
Blue
Pink
Quantity
Design: The E-200L frame offers an earlier starting age for learning bikes with a low-slung design. The longer wheelbase allows for more knee clear...
ByK E-250 ByK E-250 Quick View

ByK E-250

$299.00

Color
Cyan blue
Sky blue
Pink
Bright orange
Quantity
Push, Run or Pedal. With a detachable push handle, our low frame and ultralight weight, learning to ride has never been easier. Age: 3 - 5 yearsHei...

ByK E-250

$299.00
ByK E-250 MTB Quick View

ByK E-250 MTB

$299.00

Quantity
This is a tiny mountain bike - probably the smallest available! Suitable for 2.5-5 years.
ByK E-250 Retro Quick View

ByK E-250 Retro

$319.00

Quantity
The bike every kid would love to learn on. Your child will enjoy the best handling kids bike on the market while you relax knowing they have the sa...
ByK E-250L balance bike ByK E-250L balance bike Quick View

ByK E-250L balance bike

$209.00

Color
Royal Pink
Red
Chrome Green
Quantity
Perfect Balance bike for growing riders. Design: The E-250L frame offers children who are still young and require a learning bike, but are slightly...
ByK E-350 ByK E-350 Quick View

ByK E-350

$339.00

Color
Electric blue
Electric red
Pink
Purple
Ninja Green
Celeste Green
Sky Blue
Midnight Black
Quantity
The bike every kid would love to learn on. Your child will enjoy the best handling kids bike on the market while you relax knowing they have the sa...

ByK E-350

$339.00
ByK E-350 Retro Quick View

ByK E-350 Retro

$379.00

Colour
Sky Blue
Celeste Green
Quantity
Design: At the heart of every ByK Bike is a well designed frame and weighing in at less than 1kg, your child will have a light and easy bike to rid...
ByK E-350MTB ByK E-350MTB Quick View

ByK E-350MTB

$409.00

Quantity
On the MTB kids mountain bike range, your kids will enjoy our cutting edge geometry and attention to exacting detail with a full compliment of dura...
ByK E-350x2i Quick View

ByK E-350x2i

$399.00

Quantity
Design: With no external moving parts and designed by SRAM for electric bikes and folding bikes, the internal 2-speed i-motion gear system has been...
ByK E-450 ByK E-450 Quick View

ByK E-450

$379.00

Color
Lilac
Green
Blue
Ninja Green
Orange
Quantity
The best kids bike on the market. With weight savings and efficiency levels never seen before on a child's bike, the E-450 was reviewed by Bicyclin...

ByK E-450

$379.00
ByK E-450 MTB Quick View

ByK E-450 MTB

$499.00

Quantity
On the MTB kids mountain bike range, your kids will enjoy our cutting edge geometry and attention to exacting detail with a full compliment of dura...
Call for availability
ByK E-450 MTR ByK E-450 MTR Quick View

ByK E-450 MTR

Call for availability

This new model introduces a range of bikes that has the advantages of both Mountain and Road style. Optimising both ease of riding and added st...
ByK E-450 Retro Quick View

ByK E-450 Retro

$409.00

Quantity
The best kids bike on the market. With weight savings and efficiency levels never seen before on a child's bike, the E-450 was reviewed by Bicyclin...
ByK E-450 x 2i Quick View

ByK E-450 x 2i

$429.00

Quantity
Design:  With no external moving parts and designed by SRAM for electric bikes and folding bikes, the internal 2-speed i-motion gear system has bee...
ByK E-450 x 3i ByK E-450 x 3i Quick View

ByK E-450 x 3i

$439.00

Color
Purple
Cyan blue
Sky Blue
Quantity
With internal 3 speed gears, this has no external gear parts you can damage - treat it rough! Whilst you are still learning to handle your bike and...
ByK E-450 x 3i Commuter Quick View

ByK E-450 x 3i Commuter

$479.00

Quantity
This is the perfect bike for a kid in the city. It has a kickstand, mudguards, and a rear rack. There are hand and pedal brakes, plus a low-mainten...
ByK E-450 x 8 ByK E-450 x 8 Quick View

ByK E-450 x 8

$469.00

Color
Electric red
Candy Pink
Quantity
Design: With the E-450x7 frame we customised each tube to reduce weight and improve handling. Another crucial ingredient to the clever design is th...
ByK E-510 MTB Quick View

ByK E-510 MTB

$549.00

Quantity
Age: 7 - 11 years | Height: 130 - 160 cms The E-510 MTB is ideal for kids who want to tackle rougher roads. It features a front suspension fork, po...
ByK E-540 R Quick View

ByK E-540 R

$669.00

Quantity
Age: 7 - 11 years | Height: 130 - 160 cms Design: At ByK we know kids love to be like their heroes, on the 620R they can be ready to climb the high...
ByK E-540 x 16 ByK E-540 x 16 Quick View

ByK E-540 x 16

$549.00

Color
Electric blue
Lime green
Quantity
ByK designer Warren Key has considered every component to increase strength and lower the overall weight. Design: The lightweight Alloy frame is cu...
ByK E-540 x 3i ByK E-540 x 3i Quick View

ByK E-540 x 3i

$479.00

Colour
Watermelon
Red
Quantity
ByK designer Warren Key has considered every component to increase strength and lower the overall weight. Design: The lightweight Alloy frame is cu...
ByK E-540 x 3i Retro Quick View

ByK E-540 x 3i Retro

$539.00

Quantity
ByK designer Warren Key has considered every component to increase strength and lower the overall weight. Design: The lightweight Alloy frame is cu...
ByK E-540CX Quick View

ByK E-540CX

$669.00

Quantity
The ultimate kids cyclocross bike! For fun on the road, dirt, trails, triathlon or touring. The CX has predictive handling, shock absorbing geometr...
ByK E-540x3i Commuter Quick View

ByK E-540x3i Commuter

$539.00

Quantity
The Commuter range of ByKs feature mudguards and a rear rack, in addition to the kickstand and low-maintenance 3-speed gear hub. It's the perfect b...
ByK E-560 MTB Quick View

ByK E-560 MTB

$619.00

Quantity
On the MTB kids mountain bike range, your kids will enjoy our cutting edge geometry and attention to exacting detail with a full compliment of dura...
Call for availability
ByK E-620 R Quick View

ByK E-620 R

Call for availability

Design: At ByK we know kids love to be like their heroes, on the 620R they can be ready to climb the highest mountain pass and ride to school the n...
ByK E-620 x 16 ByK E-620 x 16 Quick View

ByK E-620 x 16

$589.00

Colour
Black / Ninja Green
White / Candy Pink
Quantity
Our E620 Urban range exudes innovation and precision in every detail. We have taken this bigger size children's bike to a new level of efficiency, ...
ByK E-620 x 3i ByK E-620 x 3i Quick View

ByK E-620 x 3i

$539.00

Colour
Black / Mid Blue
White / Celeste Green
Quantity
10 - 14 Years, 142.5 - 175cms Our E620 Urban range exudes innovation and precision in every detail. We have taken this bigger size children's bike ...
ByK E-620 x 3i Commuter Quick View

ByK E-620 x 3i Commuter

$579.00

Quantity
This is a bicycle that's made for the kids riding in the city. It has mudguards, a rear rack and a kickstand, plus strong V-brakes, and a simple 3-...
ByK E-620 x 3i Retro Quick View

ByK E-620 x 3i Retro

$579.00

Quantity
10 - 14 Years, 142.5 - 175cms Our E620 Urban range exudes innovation and precision in every detail. We have taken this bigger size children's bike ...
Call for availability
ByK E-620CX Quick View

ByK E-620CX

Call for availability

The ultimate kids cyclocross bike! For fun on the road, dirt, trail, triathlon or touring. The CX has predictive handling, shock absorbing geometry...