The best entry-geared bike on the market for kids.

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.

E-450x8 | Age: 6 - 9 years | Height: 115 - 145 cms

We have combined our low gravity concept ergonomic frame with the very best cassette gears and tough wheels for the greatest safety and rideability.

It delivers a dramatic advantage in handling and comfort - with each tube of the frame customized to reduce weight and improve handling, and superior control and bump dampening ability with our CRM forks. Just 10kgs.


 Design -  With the E-450x8 frame we customised each tube to reduce weight and improve handling. Another crucial ingredient to the clever design is the improved control and bump dampening ability of our CRM forks - giving a dramatic advantage in handling and comfort.

Little details such as increased knee to handlebar clearance for growing bodies, a longer wheelbase for stable handling, and adjustable pedal position for growing legs, all make the E-450x8 the best entry-geared bike on the market for kids. Durabilty is also a key factor in the E-450x8 such as the added extra strength in the wheels and the tyres.

Performance -  Kids love the idea of gears but they give them a tough time! ByK have gone for the top of the range in all departments. Their unique design offers a longer chain length, helping with chain flex. Then they use the direct pulling 1:1 SRAM gears - fantastic because every movement in the lever reflects the same movement in the derailler. Also, by using a cassette hub, ByK have eliminated cluster wobble and the demons of throwing chains off gears.

Safety - The custom-sized V-Brakes are calibrated for power and ergonomic fit. The innovative frame improves balance and control to help each rider operate at the safest level possible.

Little Details Count

True cartridge bottom bracket for straighter chain alignment.

Cassette rear hub for superior gear shifting.

CRM Forks for extra comfort and improved handling.

Long rear stay length for best possible gear shifting.

Super tough wheels for reduced maintenance.

Calibrated V Brakes for progressive braking.

SRAM cassetted gears for perfect precision.


Weight - 9kg

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

Gears - Shimano Rapidfire 8 Speed Trigger Shifter Gears

Wheels - Dynamic Advantage Tall Alloy Wheels, Reinforced 36 Hole

Tyres - Low Profile, Low Resistance Design with Tough Tubes

Brakes - Alloy Front and Rear Calibrated V Brakes

Brake levers - Alloy, Adjustable Short Reach

Saddle - Comfort Midi Deluxe

Handlebars - Custom Width Low Rise V-Bars 

 Safety Reflectors - Included

 Bells - Included

Kickstand - 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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