The bike every kid would love to learn on.

Build Information

This bike will be shipped un-built in it's standard bike box. Bikebug strongly recommend that this bike MUST be built by a trained mechanic, at a bike shop, or a mobile bike mechanic. Any assembly undertaken without professional assistance is at the customer's risk and any damage resulting from faulty assembly will not be covered by the warranty.

E-350 | Age: 4 - 6 years | Height: 95 - 117cms

This bike redefines children's bikes for innovation and excellence.

From the smooth handling long wheelbase to the ultra-efficient tall wheels, safe braking with a footbrake and two calibrated alloy handbrakes, every single component has been carefully selected. Just 8+kgs.


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 ride.  Small children have a narrow pelvis. ByK believe for a child to ride comfortably and in the correct position, the saddle should be padded and matching the size of their body - so they have done just that with the E-350.

Performance - With lightweight alloy wheels, we've made pedalling easier; professional bike riders insist on them so why shouldn't our kids too!  And the smooth, faster-rolling tyres don't wear little legs out so quickly - as opposed to regular BMX kids bikes that have wide tyres with big knobs that most kids struggle to get going on. At just over 8kgs, the E-350 is approximately 30% more efficient than comparative kids bikes.

Safety - Braking should be efficient and easy. On the front ByK have used an alloy side pull calliper for developing immediate hand control - the alloy makes it light without flex and a smoother, mechanical action.  And at the rear a coaster brake for simple and safe foot braking.

Little Details Count

Increased Knee to Handlebar Clearance for Growing bodies

Alloy Seat Clamp

Custom Length Cranks

Pedals with Bearings

Smooth Running Tyres to Reduce Road Friction & Noise so Your Child can Hear Safety Instructions Training Wheels

Ergonomic Riding Triangle between Pedals

Seat and Handlebar for Best Balance and Efficiency

Long Wheelbase for More Predictable Handling at Higher Speeds

Comes with Training Wheels


Weight - 7.8kg

Minimum Seat Height - 46cm

Maximum Seat Height - 59cm

Frame - Lightweight Alloy, Low Gravity Concept Design

Wheels - Dynamic Advantage Tall Alloy Wheels with Radial Front Spokes

Tyres - Low-Profile, Low-Resistance Design with Tough Tubes

Brakes - Rear Coaster Brake with Alloy Front Caliper and Rear V Brake

Brake Levers - Alloy, Adjustable Short Reach

Saddle - Comfort Mini

Handlebars - Custom Width V-bars

Safety Reflectors - Included

Bells - Included

Training Wheels - Included

Size Chart

Bike Model Wheel Size Compares To Age Group Rider Height Min Seat Height
E-200 200mm 12" Bike 2-4 years Small - MidSize 33cm
E-250 250mm 12" Bike 3-5 years 85-102cm 40cm
E-350 350mm 16" Bike 4-6 years 95-117cm 46cm
E-450 450mm 20" Bike 5-8 years 110-132cm 59cm
E-540 540mm 24" Bike 7-11 years 130-160cm 66cm
E-620 620mm 26" Bike 10-14 years 142.5-175cm 71cm

How To Determine Your Size

ByK Bikes are not categorised by the old imperial sizings of the past (like 12", 16", 20", or 24"). They use the metric system to describe their wheel sizes as 200mm, 250mm, 350mm, 450mm, 540mm and 620mm. Please use this chart to determine the bike size best suited to your young rider. 

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