Quick Facts
Costway kids 20 inch mountain bike, 7-speed with adjustable seat and handlebar, suitable for riders 48 to 60 inches tall, 220 pound capacity.
Best for
Kids 48 to 60 inches tall
Key detail
High carbon steel frame
Size and fit
Wheel 20 inch, saddle 27 to 33 inches
Consider if
Consider other bikes if rider height outside 48 to 60 inches.
Shipping
Free US shipping over $100, 30-day returns
Kids Mountain Bike That Grows With Them
7-speed derailleur, adjustable seat and handlebar, and front suspension for steady rides, sized to fit children approximately 48 to 60 inches tall.
Kids Mountain Bike That Grows With Them
Easy, Reliable Shifting
Easy, Reliable Shifting

A 7-speed derailleur with twist shifter helps kids pick the right gear for hills and flats, so rides feel smoother and more fun. Durable components make shifting predictable as they learn.

Adjustable Fit For Growing Kids
Adjustable Fit For Growing Kids

Seat and handlebar heights adjust to match changing leg and torso length, keeping riding position comfortable and safe. Quick adjustments mean one bike can fit multiple kids or last several seasons.

Sturdy Frame and Tires
Sturdy Frame and Tires

High carbon steel frame and anti-slip tires plus a shock-absorbing front fork give steady handling on uneven trails and sidewalks. Built-in reflectors and a bell add visibility and practical safety.

Built to Last
High carbon steel frame designed for long-term use and everyday play.
Trusted Stopping Power
Front and rear V-brakes plus dual handbrakes for reliable stopping performance.
Quick Setup
Arrives about 85 percent pre-assembled to get kids riding sooner.
Room to Grow
Adjustable saddle and handlebar heights fit the 48 to 60 inch range.
How to Choose a Kids' Mountain Bike

Focus on fit, braking, and durability to pick a bike your child will actually use and enjoy.

  1. Measure Inseam: Have your child stand and measure from crotch to floor; use that to check saddle height and ensure a comfortable leg extension while pedaling.
  2. Check Wheel Size: 20 inch wheels suit many school-age kids in the 48 to 60 inch range; wheel size affects stability and handling.
  3. Test the Brakes: Look for easy-to-reach handbrakes and responsive stopping. V-brakes are common and offer good, serviceable stopping power.
  4. Adjustability Matters: Seats and handlebars that raise and lower let one bike fit a growing child, extending usable years and comfort.
  5. Think About Terrain: A front suspension fork and knobby tires help on trails, while smoother tires roll better on pavement.
Frequently Asked Questions
What heights and wheel size does this bike fit?

This model lists a suitable height of 48 to 60 inches with a 20 inch wheel option; saddle height adjusts from 27 to 33 inches.

How much assembly is required?

The bike ships about 85 percent pre-assembled, you will need to attach the front wheel, handlebars, and make final adjustments; basic tools are included in the box or recommended in the manual.

Is the bike safe for trail riding and brakes reliable?

Yes, it has front suspension, anti-slip tires, and front and rear V-brakes with dual handbrakes for dependable stopping on varied surfaces.

What is the weight capacity?

The listed weight capacity is 220 pounds, which accommodates most older kids and teens who need a sturdy ride.

How do shipping and returns work with your store?

We ship from a US warehouse, offer free US shipping on orders over $100, and provide 30-day returns. If you need help, our human customer support team can walk you through returns or questions.

From the Moogco Baby Journal
Best Toys to Spoil Your Grandson or Granddaughter: Ride-Ons, Climbers and Outdoor Picks (2026)
By Eda Ulger , Moogco Baby Editor and mom of two · Updated May 2026 You want to spoil your grandkids with something they'll actually use, not another plastic toy that ends up in the donation pile by next...
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"I was lucky to find this pad for my grandson’s bassinet. I like how it is all natural snd organic. Just make sure to buy it a little bigger because it shrinks after washing. Also give ample time…"

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"These helped at first but it seemed like the edges dug into my skin making it irritated (might have needed the larger ones). Once my milk came in more, milk would spill everywhere. I found that milk…"

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★★★★★

"Initially, I was skeptical of using it, but when my doc referred it to me for my cracked nipple, it worked like a charm. I did not want to put any balm or lotion over my nipple as I did not wanted…"

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"These were great in the beginning helped me so much."

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"Did the job, kept me more comfortable the first couple weeks postpartum as breastfeeding was established. Next time I would go for the design that has perforated holes for airflow."

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GI
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"As a breastfeeding mom I truly couldn’t recommend these more. They literally SAVED MY LIFE in the newborn stage and then saved me again when teething started. They’re easy to use, easy to clean and…"

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"This is a great item to have for breastfeeding mommas. It feels very cooling and refreshing after breastfeeding and makes wearing nursing bras very comfortable since the fabric is not rubbing on your…"

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Micho
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"These cups protect and help heal sore nipples so quickly. Comfortable under a bra, easy to clean, and worth the investment for breastfeeding. Stats: 5’3”, 140 lbs, 8 weeks postpartum & nursing"

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"Great value for the price compared to name brand silverettes. I only really used them for maybe 2-3 weeks, so I’m glad I didn’t spend the extra money when these got the job done just as well"

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Hailey
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★★★★★

"These are perfect for breastfeeding. They help keep any ointment or lanolin from getting on your clothes and smooth for immediate relief of cracks or nipple soreness in the first few weeks."

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Verified buyer · March 25, 2026
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"Had a cracked nipple, added some organic ointment and put this over it, healed in 2 days! Recommend it 100%"

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"These are great for nursing in the first few weeks when there’s soreness and breakdown. Would recommend!"

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Julie
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"These were wonderful for me postpartum while learning to breastfeed. Highly recommend. They are easy to clean & very functional."

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Bridget
Verified buyer · December 10, 2025
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"It saved my nipples multiple times. They’re super light. Quality is good, they do bend for no reason lol overall a good product."

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Verified buyer · September 8, 2025
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"These were great in the beginning helped me so much."

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Kyle
Verified buyer · December 11, 2025
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