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Mongoose

Mongoose Legion Kids Freestyle BMX Bike, Intermediate Rider, Boys and Girls Bikes, 20-Inch Wheels, Hi-Ten Steel Frame, Micro Drive 25x9T BMX Gearing

    • Based on 3,123 reviews
Condition: New
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Availability: Only 2 left in stock, order soon!
Fulfilled by Amazon
Arrives Saturday, Apr 5
Order within 2 hours and 46 minutes
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Color: White


Size: 20-Inch Wheels L20


Features

  • L20 is a stylish freestyle BMX bike that offers everything a beginning rider needs to hit the streets and pop off curbs, Suggested rider height is 48-54
  • Built to last with its Hi-Ten steel frame, removable brake mounts, and a top tube length of 20.25 inches
  • Boasts a high-performance drivetrain equipped with 170mm one-piece forged steel cranks, a 25T alloy chainring, and an American loose ball bottom bracket
  • Wheelset is equipped with 20 x 2.3 tires mounted on aluminum single wall 36H rims with 3/8 female axle front hub and 9T cog sealed bearing cassette rear hub
  • Aluminum U-brake and brake levers provide precision speed control, while the Hi-Ten steel handlebar and fork are joined by a 50mm stem and threadless sealed integrated headset for maximum steering performance

Description

For 45 years, Mongoose has been in the dirt, down the trails, and on the ramps. With the Legion Series, Mongoose offers a full line of freestyle BMX bikes for riders of all ages and ability levels. The Legion L20 was designed to be a fully park, street and dirt worthy BMX bike. The Legion L20 features a Hi-Ten steel frame (20.25” top tube), tapered headtube, and removable brake mounts. The L20 Hi-Ten steel 8” rise handlebar and 48mm stem are designed for precision riding, while the wide aluminum single wall 36H rims and 2.3” BMX tires offer grip and durability. The 25x9T gearing with one-piece tubular chromoly 170mm hollow spindle cranks and American loose ball bottom bracket offer a clean, reliable drivetrains. An alloy U-brake with alloy brake levers provide speed control, while the Hi-Ten Steel BMX fork with 1-1/8" threadless steerer and taper leg helps maximize performance. This bike ships ready to be assembled and comes with a 5-year limited warranty on the frame and a 1-year limited warranty on parts.

Bike Type: BMX Bike


Age Range (Description): Big Kid


Brand: Mongoose


Number of Speeds: 1


Color: White


Wheel Size: 20 Inches


Frame Material: Alloy Steel


Suspension Type: Rigid


Special Feature: freestyle, Aluminum Frame, BMX


Included Components: [Bike, BMX Pedals, Chain, Bicycle Seat, U-Brake, Brake Levers, Handlebar, Fork, Stem, 1-1/8 inch Headset, Three-piece Forged Steel Cranks, Chainring, Bottom Bracket, Front Hub, Rear Spokes, Double Wall Aluminum Rims, Tires] See more


Bike Type: ‎BMX Bike


Age Range (Description): ‎Big Kid


Brand: ‎Mongoose


Number of Speeds: ‎1


Color: ‎White


Wheel Size: ‎20 Inches


Frame Material: ‎Alloy Steel


Suspension Type: ‎Rigid


Special Feature: ‎freestyle, Aluminum Frame, BMX


Included Components: ‎[Bike, BMX Pedals, Chain, Bicycle Seat, U-Brake, Brake Levers, Handlebar, Fork, Stem, 1-1/8 inch Headset, Three-piece Forged Steel Cranks, Chainring, Bottom Bracket, Front Hub, Rear Spokes, Double Wall Aluminum Rims, Tires]


Size: ‎20-Inch Wheels L20


Brake Style: ‎U Brake


Specific Uses For Product: ‎Trail


Item Weight: ‎12 Kilograms


Style: ‎L20


Model Name: ‎Legion Intermediate


Power Source: ‎human-powered


Wheel Material: ‎Aluminum


Year: ‎2022


Seat Material Type: ‎Plastic


Warranty Type: ‎Limited


Maximum Weight Recommendation: ‎250 Pounds


Skill Level: ‎Intermediate


Minimum User Height: ‎48 Inches


UPC: ‎038675218703


Manufacturer: ‎Pacific Cycle, Inc.


Item Package Dimensions L x W x H: ‎48.4 x 22.8 x 8.9 inches


Package Weight: ‎15.85 Kilograms


Item Dimensions LxWxH: ‎24.41 x 9.06 x 53.15 inches


Brand Name: ‎Mongoose


Warranty Description: ‎Limited Lifetime


Material: ‎Steel


Suggested Users: ‎boys


Part Number: ‎M41801U10OS


Date First Available: November 10, 2020


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Saturday, Apr 5

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.

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Similar Products

Top Amazon Reviews

    • Good quality!
Color: Black Size: 20-Inch Wheels L20
My nephew loves his bike. Very easy to assemble at all pieces came undamaged and in good order. Pretty solid bike so far!!
Reviewed in the United States on March 15, 2025 by Ken Olsen
    • Great Quality for the price!
Color: Grey Size: 20-Inch Wheels L60
Review Image by A & R A & R
Review Image by A & R A & R
Let me be up front, I paid $179 for this bike. It is the gray L60. I just looked again and the bike is now listed for almost $350. I’m not sure I would pay that for this bike. Not because it’s not worth that, but because I would probably buy a higher end brand for the same price. But, that’s just me. I bought this for my son on his 9th birthday. He is very tall for his age at a little over 5 feet. According to the specs, he would be on the bottom end of the height range for this bike and it fits him perfectly. I am 6’ 2”, 250 pounds and I wouldn’t hesitate to buy this bike for myself based on the dimensions. The handlebars are a really nice height for me to ride. I could not find out what the exact material the frame is, but it is very light. I was hoping to get him a Chromoly frame, and I would say that this would fit in that weight range. Everything is very stout and tight. I would not personally hesitate to take this bike to the park and jump it… Which I did. The crank did not flex at all, and I really love how fat the tires are. All around, I am impressed with the bike. The paint job had a nice detail in it near the welds to mimic a heat blemish, which is a throwback to the old days, when chrome bikes were welded and the heat would blemish the chrome and turn it a rainbow color. The only Cons that I really found with the bike was under the fork where the neck stem passes through the fork and is welded in place, there was a really bad cut and weld. There are also a hint of rust on a few parts of the bike. I’m assuming from being shipped overseas from China. The metal Mongoose decal for the front of the head stem was a stick on thing. It may be that kids these days want a clean look and they did that as an option. Other than those things, I can’t find anything else mechanically or geometrically wrong with the bike. To be clear, this is not a Walmart licensed product. This is a mongoose bike produced by mongoose or the company that owns mongoose. p.s. it wouldn’t be a bad idea to make sure that the neck, crank and wheel hubs are all at the correct tightness. They feel a little tight out of the box. This is super easy to do yourself, but if you’re unsure, just take it to a bike shop. ... show more
Reviewed in the United States on May 25, 2023 by A & R A & R
    • L60 Grey! Best Value BMX while it lasts!
Color: Grey Size: 20-Inch Wheels L60
Was looking to get back into BMX. I mean I'm buying a BMX for my 5yo son (wink). Just wanted something like I had in the 90s. Everything was $200 and above. Walmart has a Mongoose Rebel X1 for $182 that I almost bought. Then suddenly, as if reading some kind of chip implanted in my brain, or device, Amazon shines light on the Mongoose Legion Intermediate L60 in Grey for $153. The listing photo does not match and shows a L20 grey but the listing "Part Number" comes back as the proper L60 in grey and is what you get. I wait and the price goes to $155 but with a 20% off coupon. No brainer from there. The Legion 60 is an upgrade from the Rebel X1 which I match most to the Legion 20 from what I can verify and see in photos. The L60 has a sealed rear hub and sealed head design that makes it superior to the L20 and the L40 which had a sealed rear hub. The L60 does not come with pegs but the front axle will accept 3/8 pegs or the Mongoose Freestyle Steel Pegs. The rear axle is 14mm so you need larger diameter pegs for the rear. The rear-axle has plenty of thread left for pegs. The seat tilt is fixed. The head part of the frame already has slots ready for a gyro brake system but the L60 does not have the system installed. The frame is Hi-Ten steel which I don't mind and is what I had back then anyway and you cant really find chromoly frame builds for less that $300. $130.37 out the door on this bike for what it has is a super duper deal. It is made in China but for an OEM bike, I could never build something like this for that price. A frame and maybe wheels without tires is most I'd get under $150. Congrats to all who got the L60 in grey at a great price. Thanks Amazon for the super ai deals and Mongoose for still making and baking. ... show more
Reviewed in the United States on January 28, 2024 by Jack
    • Mongoose, still a good bicycle.
Color: Black Size: 20-Inch Wheels L20
Item arrived early! My 11 year son, roughly 75lbs loves the bike. It fits him well. We built it up in less than 1 hour. The brake ( rear cable break) is not very good so most people may end up completely swapping it out for a upfgraded version. I ended up having to take the bike to the local bike shop to see if their mechanic could get the break adjusted correctly and he improved it slightly but its still will not grab the tire and fully stop it. If he is going down a hill the bike brake will NOT stop the tire. the brake pads continually slid along the rim when depressed only slowing the bike. I am considering sanding the rim with 220 grit to see if a rough or milled type edge might create more friction for the pads to grab. I have not done that yet, because I wanted to see if the brakes work better after a break in period. The mechanic speculated that since the rim was not milled and the black paint on the rim was slick, it caused slippage. Over all the rest of the components are decent for bike that was under $250. ... show more
Reviewed in the United States on February 5, 2025 by Timothy M.
    • Good bike for the money
Color: Red Size: 20-Inch Wheels L20
Review Image by Devyn Tomplait Devyn Tomplait
The media could not be loaded. My son likes it. Welds look good. All components except brakes are good quality. The brakes are the only issue. No matter what adjustments I made (and believe me, I made them all), they were basically useless. But, I purchased a new inexpensive set of brake pads that had good reviews on Amazon. And I also switched the brakes to the standard cable option, instead of the bmx brake mechanism that allows the handlebars to rotate 360 degrees. I used a brake system I had lying around to accomplish this. With these two cheap DIY upgrades, the bike now stops on a dime, leaving 9 cents of change. I would recommend this bike to anyone needing a bike for their kids. Changing the brake system with your child is a great intro into bike ownership and maintenance! ... show more
Reviewed in the United States on August 26, 2023 by Devyn Tomplait Devyn Tomplait

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