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RoyalBaby

RoyalBaby RB18-15FG Kids Bike, 12-20 Inch Wheel, Single-Speed, with Kickstand

  • Kids' Bike
  • 18 in
  • 5-9 years
  • Caliper, Coaster
4.4 / 5 1,100 reviews
  • More reviewed than 79%
Best for Buy this if you want a durable, good-looking bike for a young child who is at least 40 inches tall and can handle a heavier frame — the sturdiness and easy assembly make it a solid choice for growing riders.
$189.99
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Amazon Associate · we may earn from qualifying purchases. Prices & availability last checked Jul 8, 2026.

More from this brand All RoyalBaby kids' bikes

Colors Available

Formula/Teal White-Blue

Styles Available

14 Inch With Training Wheels

Need a different one? Pick on Amazon →

The RoyalBaby RB18-15FG is a single-speed city bike designed for children ages 2-8, available in wheel sizes from 12 to 20 inches. It features a rigid frame, coaster and caliper brakes, and is 95% pre-assembled for convenience. Ideal for beginner riders on roads or BMX-style paths.

  • Multiple wheel sizes (12-20 inch) to accommodate growing children
  • 95% pre-assembled for quick and easy setup
  • Adjustable handlebars and seat for customized comfort
  • Coaster and caliper brakes provide reliable stopping power
Brand RoyalBaby
Model RB18-15FG
Wheel Size 18 in
Age Range 5-9 years
Brake Style Caliper, Coaster
Frame Material Carbon Steel
Number of Speeds 1
Color Teal
Weight 26 lbs
What buyers love

This bike is sturdy, well-made, and easy to assemble, with a sharp look that kids love. It handles rough play and provides a smooth ride.

  • First bike for young kids
  • Outdoor riding on pavement
  • Kids who are tall enough
What buyers complain about

The bike is notably heavy, which can make hills difficult for small children. Some users report issues with the chain coming off easily and stiff training wheels.

  • Bike is too heavy
  • Chain falls off frequently
  • Training wheels are stiff
  • Brake adjustment needed
ProductDome scorecard

How it ranks among the 150 kids' bikes we track

3.9 / 5 Overall score
Owner satisfaction 4.4

4.4★ across 1,100 Amazon reviews, weighted by review volume.

Value for money 2.7

Cheaper than 31% of the kids' bikes we track.

Buyer demand 4.0

More reviewed than 79% of the category.

Scores are computed from the 150 kids' bikes we track: Amazon rating weighted by review volume, with price and demand ranked against the category. Data-driven, not a hands-on test. Scored by Jake Torres, sports & outdoors editor.

Frequently asked

Questions about the RoyalBaby RB18-15FG

Common buyer questions answered straight from the product spec data — no fluff, no "it depends".

Does the RoyalBaby RB18-15FG come in different wheel sizes?

Yes, the RB18-15FG is available in 12, 14, 16, 18, and 20-inch wheel sizes to fit children from about 2 to 8 years old.

Is the bike pre-assembled?

The bike is 95% pre-assembled, with only a few steps needed to attach the handlebars, seat, and pedals.

What type of brakes does it have?

It features both a coaster brake (pedal backward) and a caliper brake on the front wheel for safe and easy stopping.

Can the handlebars and seat be adjusted?

Yes, both the handlebars and seat are adjustable to accommodate your child's growth and ensure a comfortable riding position.