Search  for anything...
RoyalBaby

RoyalBaby Astro Magnesium EZ-Shark Ultra-Light Kids Bike Lightweight Alloy Children Sport Bicycle 14/16/18 Inch Wheel for Boys Girls Ages 3+ Years

  • Based on 203 reviews
Condition: New
Checking for the best price...
$172.34 Why this price?
Save $19.15 was $191.49

Buy Now, Pay Later

As low as $28.72 / mo
  • – 6-month term
  • – No impact on credit
  • – Instant approval decision
  • – Secure and straightforward checkout

Ready to go? Add this product to your cart and select a plan during checkout.

Payment plans are offered through our trusted finance partners Klarna, PayTomorrow, Affirm, Afterpay, Apple Pay, and PayPal. No-credit-needed leasing options through Acima may also be available at checkout.

Learn more about financing & leasing here.

Selected Option

Free shipping on this product

This item is eligible for return within 30 days of receipt

To qualify for a full refund, items must be returned in their original, unused condition. If an item is returned in a used, damaged, or materially different state, you may be granted a partial refund.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

Availability: Only 3 left in stock, order soon!
Fulfilled by Amazon
Arrives Saturday, Sep 13
Order within 19 hours and 4 minutes
Available payment plans shown during checkout

Recently Viewed

Color: Black


Style: 18 Inch With Kickstand


Pattern Name: Basic Magnesium


Features

  • Go Beyond the St?ndard. Our RoyalMg series aims to push the boundaries to the next level. The Magnesium alloy frame is a combination of the flexible shape of carbon fiber and a weight reduction of aluminum, along with our reputable original parts, that's how we define our flagship series. While having the same structural strength and durability compared to a steel bike, RoyalMg technology optimized the weight and shock absorption.
  • Stunningly Construction. Mg-Al alloy is the ultimate material for a high-end bike. The frame is built by integrated casting without solder joint any more. It ensures the long-term use of the bike as it is so easy to ride and highly adjustable. From a toddler to a teen, they can handle this bike easily. It will grow with your kids.
  • Premium Specs. Being a RoyalBaby flagship bike, the SPACE series has all the premium parts a little rider will ever want on his bike. A Lightweight Mg-Aluminium alloy frame, sealed bearing, dual dependable band brakes, wide tires, all in one incredible bike.
  • Effortless Assembly. Comes 95% professionally pre-assembled, with an elaborated instruction manual and complementary tools needed in the box.
  • Always Reliable. RoyalBaby bike complies with the CPSC standards, and is trusted by millions of families in more than 80 countries globally. Got any questions? Our customer service is 100% satisfaction guaranteed.

Bike Type: Kids Bike


Age Range (Description): 5 - 9 Years


Brand: RoyalBaby


Number of Speeds: 1


Color: Black


Wheel Size: 18 Inches


Frame Material: Magnesium


Suspension Type: Rigid


Special Feature: 95% Pre-Assembled, Dual band Brake, Freewheel, Lightweight, RoyalBaby Exclusive Premium Parts


Included Components: Bell, Bicycle, Kickstand, Reflectors, Tool Kit


Bike Type: ‎Kids Bike


Age Range (Description): ‎5 - 9 Years


Brand: ‎RoyalBaby


Number of Speeds: ‎1


Color: ‎Black


Wheel Size: ‎18 Inches


Frame Material: ‎Magnesium


Suspension Type: ‎Rigid


Special Feature: ‎95% Pre-Assembled, Dual band Brake, Freewheel, Lightweight, RoyalBaby Exclusive Premium Parts


Included Components: ‎Bell, Bicycle, Kickstand, Reflectors, Tool Kit


Size: ‎18 Inch


Brake Style: ‎Band


Item Weight: ‎23 Pounds


Style: ‎18 Inch With Kickstand


Model Name: ‎RB18-35KH


Wheel Material: ‎Alloy Steel


Year: ‎2024


Maximum Weight Recommendation: ‎150 Pounds


Assembly Required: ‎Yes


Number of Handles: ‎1


Minimum User Height: ‎46 Inches


Manufacturer: ‎RoyalBaby Cycle


Item Package Dimensions L x W x H: ‎51.7 x 26.7 x 7.4 inches


Package Weight: ‎13.11 Kilograms


Item Dimensions LxWxH: ‎49 x 20 x 34 inches


Brand Name: ‎RoyalBaby


Warranty Description: ‎Lifetime warranty for frame and fork. ‎Free replacement for easy-wearing parts within 6 months.


Material: ‎Magnesium Alloy


Part Number: ‎RB18-35KH


Date First Available: June 25, 2024


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, Sep 13

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

  • Klarna Financing
  • Affirm Pay in 4
  • Affirm Financing
  • Afterpay Financing
  • PayTomorrow Financing
  • Financing through Apple Pay
Leasing options through Acima may also be available during checkout.

Learn more about financing & leasing here.

Similar Products

Top Amazon Reviews

    • It’s a gift for me as much for my son!
Color: Deep Azure Style: 16 Inch With Kickstand Pattern Name: EZ-Shark Ultra-light
Why did you pick this product vs others?: See below: Weight: So light, my 5yo loves this bike and it rides like a dream, he is so much more self reliant, and able to pedal up hill on his own. Ease of assembly: The pedals are amazing quick disconnect, all you have to assemble is slide the seat in place, pivot the front wheel, and snap on the pedals. So easy! Ease of riding: My son is so much more confident riding this bike, and I really appreciate it having both a front and rear brake, with a freewheel cassette on the rear wheel. Looks: In a word: amazing. I wish I could get one of these I. A 700c size for me to ride! My son literally goes into the garage EVER CHANCE HE GETS, to just sit on the bike. He is obsessed, and is so much more interested in riding all over the cul-de-sac and along our walking trail. ... show more
Reviewed in the United States on July 6, 2025 by Scott A. Bontrager
    • Well built and light. No complaints
Color: Black Style: 18 Inch With Kickstand Pattern Name: Basic Magnesium
Lightweight and well built. Stark reminder that China is so much ahead . sMH
Reviewed in the United States on August 4, 2025 by Ash
    • Really cool bike
Color: Rural Green Style: 16 Inch With Kickstand Pattern Name: Basic Magnesium
Excellent good looking bike with super easy assembly. This is my kid’s second from Royal so I can vouch for durability as well. This model is lightweight as well.
Reviewed in the United States on July 25, 2025 by Vyankatesh
    • Very cost effective
Color: Red Style: 14 Inch With Kickstand Pattern Name: Basic Magnesium
This is good value for money. My 4yo went from a Strider to this for his birthday and was pedaling solo on his second day, no training wheels, but only completely flat or slight downhill and cannot start from a full stop. He's rode it a few more times and he can pedal now slightly uphill, and start from a complete stop if flat or downhill. So, pretty smooth progress. I was wary about the brakes but they work perfectly and he can use them with his small hands. Maybe the geometry of the frame could be better, because for him to be able to put his feet down, the saddle is so low that his knees need to go quite high, losing a pedaling power. And it could probably be a little lighter, or maybe not, I don't have anything to compare it to. But I do not regret the purchase because he's learned to ride pretty quickly and this is less than half the price of the specialty brands. He also likes riding it very much, and is very excited about learning to pedal, which is what matters the most. ... show more
Reviewed in the United States on June 13, 2025 by Pablo
    • Best lightweight
Color: Mako Shark Style: 16 Inch With Kickstand Pattern Name: EZ-Shark Ultra-light
The best for my toddler, very light so he can easily grab it and go uphill
Reviewed in the United States on July 18, 2025 by Ruslan Tsoy
    • Truly Lightweight
Color: Deep Azure Style: 16 Inch With Kickstand Pattern Name: EZ-Shark Ultra-light
Review Image by C C
My 4 year oldMy son outgrew his 14 inch bike and we were looking for a 16 inch bike and this is what caught our attention. Easy to assemble and the seat height is adjustable. Goood bike. We will update this after we take it on non paved roads and see how this performs.
Reviewed in the United States on July 28, 2025 by C C
    • Best bike ever
Color: Deep Azure Style: 16 Inch With Kickstand Pattern Name: EZ-Shark Ultra-light
Best bike ever, I let my 4 year old son ride bike with no pedals and now knows how to balance
Reviewed in the United States on July 25, 2025 by Jason L.
    • Feather weight light.
Color: Deep Azure Style: 16 Inch With Kickstand Pattern Name: EZ-Shark Ultra-light
Review Image by elido de leon elido de leon
Review Image by elido de leon elido de leon
Excelent choice. My kid left the other kids behind ,with this bike.
Reviewed in the United States on August 8, 2025 by elido de leon elido de leon

Can't find a product?

Find it on Amazon first, then paste the link below.
Checking for best price...