








🚀 Own the streets with the Mongoose Legion L20 – where style meets unstoppable performance!
The Mongoose Legion L20 is a 20-inch freestyle BMX bike designed for kids and youth riders between 4'8" and 5'4". Featuring a durable Hi-Ten steel frame, precision aluminum U-brakes, and a high-performance 170mm forged steel crank drivetrain, this bike is built for street, park, and dirt riding. With wide 2.3" tires on sturdy aluminum rims and a removable brake mount, it offers both grip and customization. Ready to ride out of the box and backed by a 5-year limited frame warranty, the Legion L20 is the perfect BMX for beginner to intermediate riders craving style and control.

















| Additional Features | Aluminum frame, BMX, freestyle |
| Age Range Description | Big Kid |
| Asin | B07W5L32P9 |
| Bicycle Drivetrain Type | Chain Drive |
| Bike Type | BMX Bike |
| Brake Style | U Brake |
| Brand Name | Mongoose |
| Color | blue |
| Customer Reviews | 4.5 4.5 out of 5 stars (347) 4.5 out of 5 stars |
| Frame Material Type | High Tensile Steel |
| Global Trade Identification Number | 00038675187177 |
| Included Components | Mongoose Legion L20 Freestyle BMX Bike |
| Is Assembly Required | No |
| Is Autographed | No |
| Item Type Name | BMX Freestyle Bike |
| Item Weight | 12 Kilograms |
| Manufacturer | Pacific Cycle, Inc. |
| Maximum Weight Recommendation | 113.4 kg |
| Minimum User Height | 56 Inches |
| Model Name | Legion Intermediate |
| Model Number | M41800U10OS-PC |
| Model Year | 2020 |
| Number Of Handles | 1 |
| Number Of Speeds | 1 |
| Power Source | Pedal power (human energy transmitted through drivetrain) |
| Seat Material | PU, Vinyl, Plastic |
| Size | 20-Inch Wheels/L20 |
| Skill Level | Intermediate |
| Specific Uses For Product | Trail |
| Style Name | L20 |
| Suspension Type | Rigid |
| Upc | 038675187177 |
| Warranty Type | Limited |
| Wheel Material | Aluminum |
| Wheel Size | 20 Inches |
User
Good quality and nice look
My son likes it very much, every day he rides it to school. Thanks
User
rapport qualité/prix incroyable
Je suis agréablement surpris du rapport qualité/prix. Je recommande
User
Muy ligera
Excelente para hacer trucos
User
Great quality bike and light weight
This Legion L20 is the third Mongoose BMX bike I've purchased over the last year, and I've been very happy with all three (Legion LSX, Title Pro, and L20).Assembly was very easy on all three bikes; just need to attach the front wheel, handle bars, and pedals. Took only about 15 mins. You just need to pay attention to the direction of the forks and remember the left pedal will be left-hand threaded. The forks and pedals have stickers denoting front/rear, left/right.Besides adjusting for height and putting air in the tires, there really wasn't any need for fine adjustments (chain tension, brakes, misc. nuts, etc.), as these things are being adjusted correctly from the factory (nice surprise).After reading the negative reviews on this bike and the others mentioned, it seems many of them are related to incorrect user assembly. If you put the forks on backwards or don't put air in the tire, you're going to have problems.The Legion L20 is reasonably light at roughly 25 lbs., easy to ride, and looks great. Note, however, that this is a freestyle bike, and probably not the best choice if you're just looking for a neighborhood cruiser. The crank bracket sits about 1" higher than on a race type BMX bike, making the apex pedal feel too high when in a sitting position. This may not bother some people. If it does, you could buy shorter cranks, but with the money you'd spend, it would be more logical to just go with a race style bike with the lower bracket (and larger front sprocket). The Title series with a lengthened seat post makes for a great lightweight cruiser.Not much to complain about on this bike. Excellent quality for the money. If you're looking for a reasonably priced freestyle bike with good quality, at $156, this is a great choice.
User
Great for my short son
I just purchased this bike for my 9 year old for skatepark use. He is only 4’4” and I was a little concerned as the height recommendation was for 4’8” but it adjusted to his height well. The seat slams down extremely low and handle bars adjust forward to meet his height without issue. The crank is a little long for him but to be expected on a freestyle bmx. Riders just need to understand this is a bike you stand up while riding for the most part. Who does tricks sitting? I jumped on it and easily did some tricks around the driveway and I weight 175 lbs. nothing major but it felt solid and smooth.
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