Ride to school, the shops, anywhere... On a ByK E-620 Boys Bike.

Bike Assembly Required

Bicycles require some assembly. This may include fitting the wheels, handlebars, pedals, seatpost and seat, and front brake caliper. This should not be attempted by the customer unless familiar with modern bicycle assembly and should otherwise be carried out by a competent bicycle mechanic. This includes bicycles sent to our stores for in store pick up, however, your local Bikebug store can assemble the bicycle for a fee, please contact your local Bikebug store after placing your order.

The ByK E-620 | Age: 10 - 14 years | Height: 142.5 - 175 cms

Urban range exudes innovation and precision in every detail. They have taken this bigger size children's bike to a new level of efficiency, safety and riding dynamics. This boy's commuter version comes complete with bonded alloy plastic mudguards and custom-sized alloy rear rack.

Design - The 620x3i is uniquely designed for children and is not a scaled down adult bike. Every single component has been considered, tested, custom sized and tuned to suit our rider's profile.

Our unique ergonomic riding position and geometry along with our selection of premium components together offer a range of riding positions and adjustability unexpected at this size.

Performance - SRAM's I-Motion ultra smooth and class leading efficient internal 3 speed gears couldn't be easier to use.

Strong wheels, durable tyres, tough tubes, comfortable ergonomic saddle, custom shaped handlebars, short reach and long reach pedal position, sealed bearings, grippy pedals and so so much more really separate ByK from the regular offering.

Safety - From our responsive handling to increased safety at speed, the ByK 620 range sets new standards in safety. The innovative frame improves balance and control to help each rider operate at the safest level possible.

To make a children's bike safe, the rider needs to be able to brake efficiently and confidently. The custom-sized V-Brakes we have used are calibrated for age, ability and ergonomic fit. And they are made of non-flexing, strong and light alloy.  Our light weight alloy rims ensure pedalling is easier. But more importantly alloy rims are a more efficient braking surface than cheaper, chrome-plated steel rims, and are therefore safer.


Weight: 12kg

Frame: Butted Alloy Frame, Low Gravity Concept Design, CRM Forks

Gears: SRAM I motion 3 speed internal gearing system

Wheels: Dynamic Advantage Tall Alloy Wheels, Reinforced 36 Hole

Tyres: Low Profile, Low Resistence Design with Tough Tubes

Brakes: Alloy Tektro Front & Rear Calibrated V brakes + Rear SRAM Footbrake*

Brake Levers: Alloy Tektro Custom Sized Levers

Saddle: Adjustable, Comfort Midi+ Deluxe

Handlebars: Custom Width Low Rise V-Bars

*The Rear SRAM Footbrake can be dis-engaged by your store's qualified mechanic


True Cartridge Bottom Bracket for Straighter Chain Alignmnet

SRAM I motion Internal Gears for Least Resistance

Ease of Change and Durability

CRM Forks for Extra Comfort and Improved Handling

Super Tough Alloy Wheels for Reduced Maintenance

Calibrated V-Brakes for Progressive Braking

Full Grip Pedals for Added Safety

Machined Surface Rims for Predictable Braking

Bonded alloy plastic mudguards and custom-sized alloy rear rack

Custom Sized Grips

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