---
product_id: 507961287
title: "RB12-30K Freestyle-EZ-S Kids Bike, Black"
brand: "royalbaby"
price: "$784.88"
currency: USD
in_stock: true
category: "Royal Baby"
url: https://www.desertcart.us/products/507961287-rb12-30k-freestyle-ez-s-kids-bike-black
store_origin: US
region: United States of America
---

# Adjustable seat & handlebar Tool-less quick-release pedals 20% lighter frame RB12-30K Freestyle-EZ-S Kids Bike, Black

**Brand:** royalbaby
**Price:** $784.88
**Availability:** ✅ In Stock

## Summary

> 🚴‍♂️ From first balance to fearless pedal—ride the future today!

## Quick Answers

- **What is this?** RB12-30K Freestyle-EZ-S Kids Bike, Black by royalbaby
- **How much does it cost?** $784.88 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/507961287-rb12-30k-freestyle-ez-s-kids-bike-black)

## Best For

- royalbaby enthusiasts

## Why This Product

- Trusted royalbaby brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Standout Style:** Jet engine water bottle, electric bell & cool mods to match every kid’s personality.
- • **Custom Fit Comfort:** Adjustable seat and handlebars grow with your child’s skills and height.
- • **Effortless Assembly:** 98% pre-assembled with tool-less quick-release parts for instant fun.
- • **Lightweight Mastery:** 20% lighter frame for effortless control and confident riding.
- • **Seamless 2-in-1 Ride:** Balance bike to pedal bike in one click—no training wheels needed.

## Overview

The RoyalBaby RB12-30K Freestyle-EZ-S is a revolutionary kids bike designed for ages 3-4, combining a balance bike and pedal bike in one lightweight, 8.12 kg carbon steel frame. Featuring tool-less quick-release pedals and footrest, adjustable seat and handlebars, and 98% pre-assembled convenience, it empowers toddlers to master biking confidently without training wheels. Compliant with CPSC and EN-71 safety standards, it includes fun accessories like a jet engine water bottle and electric bell, backed by a 12-month warranty and global customer support.

## Description

Game-changing Aspects Master biking without a training wheel. Balance bike is an excellent start for amateurs, and we take it a step further. Our EZ bike allows kids to ride as a balance bike first to gain confidence and transform into a pedal bike in a blink of an eye, all in one incredible EZ bike. Amateurs can master biking as soon as half an hour.* (Data collected from surveys of pre-launch customers.) Hassle-free assembly. The only tool requires to complete the assembly is a Phillips screwdriver to tighten the stem bolt. The footrest, crank and pedals feature a toolless quick-release design. With one button click, the EZ bike can switch between a balance bike and a pedal bike. Kids Bike Evolution Compared to ordinary kids bike, it is up to 20% lighter(approximately 4lbs), making it ideal for balance and pedal bike use. The EZ bike has a customizable module, like the jet engine water bottle and stem cover, to match the riders' personality. Tons of fun is coming your way! Balance bike or training wheel? We have our new answer. The fundamental idea behind balance bikes and training wheels is to let toddlers get a hint of balancing. We lower the bottom bracket position closer to the ground so that even toddlers can have their feet touching the ground. The lightweight frame design makes it as accessible as a balance bike. When these prerequisites meet the core innovation of the EZ bike, the quick-release crank pedals and footrest, the answer is clear. A pedal bike can be used seamlessly as a balance bike without holding back by training wheels.

## Features

- TWO TYPES OF BIKE. Balance bike is an excellent start for beginners, and we take it a step further. The new-launched RoyalBaby EZ bike allows kids to learn balancing first to gain confidence, and seamlessly transform into a real pedal bike.
- OPTIMIZED WEIGHT AND GEOMETRY. The EZ bike reduced 20% by frame weight compared to average. The exclusive child-friendly geometry gives kids an optimal riding posture. With the lower frame position, height adjustable saddle and handlebar, even young toddlers can easily have their feet touching the ground and start confidently.
- HASSLE-FREE ASSEMBLY. Comes 98% Pre-Assembled. The patent cranks and footrest feature a tool-less quick release design. With one button click, the EZ bike can switch between a balance bike and a pedal bike.
- DISCOVER MORE FUN. The distinctive “jet engine” water bottle, the cute electric bell, the stem cover, more cool mods on the bike making it stand out to match every EZ biker's personality. Tons of fun is coming your way!
- ALWAYS RELIABLE. RoyalBaby bike complies with the CPSC and EN-71 standards, and is trusted by millions of families from over 80 countries. Customers will be provided with high level warranty and local 24 hours service when contacting RoyalBaby for any queries.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0BCPZHKTY |
| Age Range Description | 3 - 4 years |
| Bicycle Drivetrain Type | chain-driven |
| Bike Type | Balance Bike, Kids Bike |
| Brake Style | Caliper, Coaster |
| Brand Name | RoyalBaby |
| Colour | Black |
| Customer Reviews | 5.0 5.0 out of 5 stars (3) |
| Frame Material Type | Carbon steel |
| Included Components | Bell, Bike, Kickstand, Quick-Release Footrest, Tool Kit |
| Is Assembly Required | Yes |
| Is Autographed | No |
| Item Type Name | Kids Bike |
| Item Weight | 8.12 kg |
| Manufacturer | Royalbaby Cycle |
| Model Name | Freestyle-ez |
| Model Number | RB12-30K |
| Model Year | 2022 |
| Number Of Speeds | 1 |
| Number of Handles | 2 |
| Power Source | Pedal power |
| Size | Kids Bike |
| Skill Level | Beginner |
| Special Features | 98% Pre-Assembled, Adjustable Handlebars, Adjustable Seat, Quick Release Crank And Footrest, Quick Release Seat |
| Specific Uses For Product | Learning to bike |
| Style Name | 12 Inch (Coaster Brake) |
| Suspension Type | Rigid |
| Theme | Sport |
| Warranty Type | Limited (12 months) |
| Wheel Material | Aluminium |
| Wheel Size | 12 Inches |
| Wheel Width | 2.4 Inches |

## Product Details

- **Age range (description):** 3 - 4 years
- **Bike type:** Balance Bike, Kids Bike
- **Brand:** RoyalBaby
- **Colour:** Black
- **Frame material:** Carbon steel
- **Included components:** Bell, Bike, Kickstand, Quick-Release Footrest, Tool Kit
- **Number of speeds:** 1
- **Suspension type:** Rigid
- **Wheel size:** 12 Inches

## Images

![RB12-30K Freestyle-EZ-S Kids Bike, Black - Image 1](https://m.media-amazon.com/images/I/71S9dK1pFlL.jpg)

## Available Options

This product comes in different **Color, Style** options.

## Questions & Answers

**Q: What is the maximum speed?**
A: Fixed gear.  1 speed

**Q: Does the coaster model come with the hand brake? Thank you**
A: Yes, we got the coaster model because it had both back pedal breaks and hand break.

**Q: Does the 18-inch come with training wheels?**
A: No, in fact you do NOT need training wheel on the EZ bike any more. This EZ bike allows kids to ride as a balance bike first to gain confidence, and transform into a pedal bike in a blink of an eye. If the kid have ever experienced on a balance bike, it will take less than 30 minutes to master biking with a EZ bike, no training wheels needed.

**Q: What is the difference between freewheel vs coaster brake?**
A: The main difference is the brake type of the rear wheel. 
A freewheel bike allows the pedals to be pushed in either direction, although only forward pedaling propels the bike. This type of bike makes it easier to learn to ride, because as the rider loses balance she can backpedal to regain it. Handbrakes are easier to use than coaster brake and can speed up the learning process for beginners. 
A bike with coaster brake can only be pedaled forward, while pedal backward will brake the rear wheel. The coaster brake also limits the backwards movement of your pedals.

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-07-11*