Mongoose 20" Byte Mountain Bike

20” steel mountain frame with front suspension fork

By Mongoose

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Description & Features+

The 20" Mongoose Byte Grey Mountain Bike has a steel frame for comfort and performance. The 20" Mongoose Byte is equipped with a front suspension fork for a smooth, easy ride, twist shifters to easily change gears, 3 piece crank for great shifting and linear pull brakes provide great braking power. With its 7 speeds and Shimano rear derailleur this bike is ready for all types of riding.
• 7 speed twist shifter with Shimano rear derailleur
• Alloy rims
• Linear pull brakes


Available for Shipping to Canada Post
Product Identifiers
Walmart Item #
Model #

Return Policy+

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You can return this item within 90 days from the day you receive your online order.

There are two easy ways to return this item:

  • Return this item to a Walmart store
  • Return this item by mail

From the Manufacturer +

Ratings & Reviews+

Mongoose 20" Byte Mountain Bike is rated 4.2 out of 5 by 46.
Rated 5 out of 5 by from Great bike! This is a well made, well equipped bike that would be a good value at twice the price. Delivery was quick and assembly was easy. Did it with my son and took less than an hour. Centering the brakes can be a bit tricky, so a visit to the bike shop may be needed for some. He's 6 and large for his size. Bike is a bit large for him, so will fit him better in a year or so. He loves it and figured out the shifter and hand brakes right away. Comes with nice pedals and full compliment of reflectors. Suspension is really unnecessary for kids, so rear suspension is overkill that adds weight to the bike. This is the perfect feature set for us.
Date published: 2015-06-22
Rated 5 out of 5 by from Great bike at a great price My son is 48 inches and 52 pounds. The bike fit him very well even when other 20 inch bikes were just a little big. This is due to the slope on the cross bar being able to take a large range is seat positions. We have hit the mountain bike trails and he loves it. It was easy to assemble and adjust. The gear shifter is a little stiff for his hands but he is able to shift it. I specifically wanted him to have a hard tail since all the typical suspension on the rear would only add weight. I am very happy with this purchase.
Date published: 2016-07-30
Rated 4 out of 5 by from Mostly pre-installed; suitable for kid above 6Y * Very decent bike with good quality. The speed-gear system was pre-installed so the hardest part was already taken care of. Only needed to install handle, seat and two tires which didn't take more than 10-15 minutes to complete. * Bought this for my daughter who is 7Y and 5M old but shorter than average girls. With the lowest seat setting, she could use this bike with no problem. This saved me from buying 18" bike for just few months (she was using 16" bike). * Wish the bike comes with the allen ranch to make assembly smoother. Would buy the same bike if I need to make a choice again.
Date published: 2015-09-06
Rated 5 out of 5 by from Nice bike for kids I bought this bike for both my 8 yr old son and 7 yr old daughter. I wasn't sure if my daughter would be able to figure out the gears and handbrakes, but she rides it like crazy and loves it. Rides smooth and a great bike for less than $100.
Date published: 2015-06-11
Rated 5 out of 5 by from Great bike Bought it as a gift and she loves the bike.
Date published: 2015-06-20
Rated 5 out of 5 by from 20 mongoose mountain bike When the bike was delivered it came in a box. I thought it would be hard to put together. It wasn't. It was easy to understand the instructions to put the bike together. An the bike was delivered in under 5 days. My son loves his new bike. I would shop online again and would recommend this product to my friends.
Date published: 2015-10-14
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