Name: Bicystar KB-BL04
Brand: Bicystar
Rating: 93 (134 reviews)

93/100

BikeRide Score

Users (134 ratings)

Experts (0 reviews)

Where to buy

$79.99 Amazon See it

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Facts

Gender

Boys, Girls

Type

Non-Electric, Balance, Kids, Toddlers

Release Year

Brand

Wheel Size

Gearing Type

Weight

8.5 lb

Suspension

None

Brake Type

None

Frame Material

Steel

Summary of Reviews

We have read all expert and user reviews on the Bicystar KB-BL04. In summary, this is what cyclists think. Published Jun 05, 2026 by Rachel Rushing.

6 reasons to buy

Most owners say the KB-BL04 feels sturdy and well-built.
Reviewers and owners say assembly is easy, thanks to the clear instructions and included tools.
The saddle and handlebar heights are adjustable. The saddle's height range (13” to 21”) is wider than most similarly priced balance bikes.
The KB-BL04's pneumatic tires offer better grip and comfort on outdoor terrain than the foam tires typical at this price point.
Bicystar offers this bike in four colorways.
Buyers praise Bicystar’s responsive customer support for replacing damaged parts.

4 reasons not to buy

Multiple owners say the seat and handlebar clamps won't fit during assembly, or they loosen easily during use.
Several buyers receive bikes with missing parts.
Owners say the rear wheel axle nut loosens. For one, this results in the wheel falling off while a kid is riding the bike.
The tires are puncture-prone, and two owners complain that the tubes quickly lose air.

Bottom line

The Bicystar KB-BL04 is a balance bike aimed at kids ages 3 to 6 (inseam 13.5” to 22”). Buyers praise the sturdy build, easy assembly, and adjustable seat and handlebar heights that grow with kids. The main complaints are due to the saddle and handlebars slipping and, more worryingly, loosening axle bolts. Some buyers receive bikes with parts missing or damaged, though many are satisfied with Bicystar’s support in sending replacements. Overall, owners deem the KB-BL04 a decent budget balance bike option.