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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

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Availability: Only 1 left in stock, order soon!
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Arrives Wednesday, Feb 4
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Color: Copper


Size: 20-Inch Wheels L40


Features

  • L40 is a fully park, street or dirt-worthy freestyle BMX bike that offers everything a new rider could need to bust their first tricks on their local ramp! Suggested rider height is 50-56
  • Durable bike, built with a Hi-Ten steel frame, removable brake mounts, and a mid BB shell, and has a top tube length of 20.5"
  • Equipped with a high-performance drivetrain that includes 175 mm 3-piece tubular chromoly hollow spindle cranks, a 25T steel chainring, and a mid-sealed bearing bottom bracket
  • Wheelset featuring 20" x 2.3" tires mounted on 36H aluminum single-wall rims, along with a 3/8" female axle front hub and a 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 50 mm 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: Copper


Wheel Size: 20 Inches


Frame Material: High Tensile Steel


Suspension Type: Rigid


Special Feature: Aluminum Frame, BMX, freestyle


Included Components: Mongoose Legion L40 Freestyle BMX Bike


Bike Type: ‎BMX Bike


Age Range (Description): ‎Big Kid


Brand: ‎Mongoose


Number of Speeds: ‎1


Color: ‎Copper


Wheel Size: ‎20 Inches


Frame Material: ‎High Tensile Steel


Suspension Type: ‎Rigid


Special Feature: ‎Aluminum Frame, BMX, freestyle


Included Components: ‎Mongoose Legion L40 Freestyle BMX Bike


Size: ‎20-Inch Wheels L40


Brake Style: ‎U Brake


Specific Uses For Product: ‎Trail


Item Weight: ‎12 Kilograms


Theme: ‎BMX


Style: ‎Bmx


Model Name: ‎Legion Intermediate


Power Source: ‎Pedal power


Wheel Material: ‎Aluminum


Year: ‎2020


Seat Material Type: ‎Nylon


Warranty Type: ‎Limited


Assembly Required: ‎Yes


Skill Level: ‎Intermediate


Global Trade Identification Number: ‎46


Minimum User Height: ‎60 Inches


UPC: ‎038675187146


Bicycle Drivetrain Type: ‎Single-speed


Manufacturer: ‎Pacific Cycle, Inc.


Item Package Dimensions L x W x H: ‎52 x 28 x 10 inches


Package Weight: ‎15.13 Kilograms


Brand Name: ‎Mongoose


Warranty Description: ‎5-year limited warranty on the frame and a 1-year limited warranty on parts.


Material: ‎Other, Steel


Suggested Users: ‎unisex-child


Number of Items: ‎1


Part Number: ‎M41500U20OS-PC


Date First Available: August 6, 2019


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, Feb 4

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

    • Best bike around. My 10 Yr Old loves it.. I used to BMX and better than my bikes.
Color: Grey Size: 20-Inch Wheels L60
This bike is Amazing. And even though I got it Used it came in Mint Condition still in the Box. Great Seller. My 10 Year old Daughter wanted a good Boys Bike and this one is outstanding. Much better than the Mongoose I had in 1984. I had to pull the handlebars back a little bit for her. Brakes are real good to compared to most that come on the bike. I think if you can get this for under $250. It's a steal. ... show more
Reviewed in the United States on September 23, 2025 by Joel
    • Yes! Mongoose is back to the good stuff!!!
Color: Green Size: 20-Inch Wheels L60
Just get one. This is Mongoose like in the 80's and early 90's. Not the junk crap that Walmart and other department stores still sell. Avoid those like the plague! But then, that's apparent to any real BMX rider. Those are all flash for what little you pay and no real quality. If you already have one of those, strip it down to the bare frame and only the frame and build everything else up from scratch. That's those bikes only hope. This on the other hand is fine the way it comes. Ok, may have to make a few tweaks and whatnot along the way, but that's to be expected of even the best BMX bikes. It's part of riding and making it your own. I do wish they'd have given it at least a somewhat taller seat post, and I'm also not crazy about how the seat is permanently attached to the seat post as well. Normal seat and seat post setup is, if the seat wears out or isn't to your liking, you can just stick a new seat on the seat post. Here, you have to replace both. Was expecting something like a pivoting seat post or perhaps the old bolt down kind. On the other hand, the seat that's here, by BMX standards, is plenty acceptable until I upgrade. I got the L60 and I'm not sure it mentions it in the details, but it appears as though it's sporting a rear wheel that's sealed while the front wheel is not sealed. But the L60 is totally the midrange offering of the whole Legion lineup. So it's expected that a few things are somewhat average, besides, the rear wheel is where you want and need a better quality one at, uh, if you're going to cut corners that is. Also, contrary to what I'm seeing in other reviews here, the brakes do work surprisingly well. More than adequate. The bike arrived perfectly and overall inspection found one very minor blemish. Top tube on left side has like a weird smudge in the paint job that then glossed over for it's final painting. I tried Goo Gone thinking it might have just been grease, it's kind of a blackish color against green giving that effect sorta, but after a good rubbing it remains unchanged, so I can tell it's permanently on there. Both very minor and totally cosmetic, a classic error no doubt the result of being mass produced. Everything else is brilliant here plus I caught a sweet sale on mine and got it for only $146.87 + tax. Arrived quickly, packaged well, everything is in perfect condition, so yeah, I'll excuse one little minor smudge. Thank you Mongoose!!!! ... show more
Reviewed in the United States on May 2, 2023 by Matt Jacoby
    • 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
    • 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.

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