Mongoose Legion L80 Freestyle Mens and Womens BMX Bike, Advanced Riders, Adult Steel Frame, 20-Inch Wheels, Dark Blue








Key features
- •L80 is a fully park, street or dirt worthy freestyle BMX bike, Hi-Ten steel 9 inch rise handlebar that will make you stand out at the bike park, Suggested rider height is 5'6" - 6'0".
- •Ultra-durable Mongoose 4130 Chromoly front triangle, along with removable brake mounts and a mid BB shell, with a top tube length of 20.75 inches
- •Drivetrain features 175 mm 3-piece tubular chromoly hollow spindle cranks with a 25T steel chainring and mid sealed bearing bottom bracket.
- •Wheelset features 20" x 2.3" tires mounted on wide 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 4130 chromoly handlebar and fork are joined by a 50 mm stem and threadless sealed integrated headset for maximum steering performance.
Mongoose Legion L80 Freestyle Mens and Womens BMX Bike, Advanced Riders, Adult Steel Frame, 20-Inch Wheels, Dark Blue
List Price: $643.72$579.35DEALYou Save: $64.37 (10%)
Free shippingFree Returns – 30 daysFree Order CancellationSecure Payment2–3 Days DeliveryGet It June 25, 2026In Stock (1)No marketing spamNo account requiredFulfilment by FedEx / Amazon / UPS / ShipwirePayPal / Card Buyer Protection
Customer Reviews
Reviews sourced from verified Amazon purchasers4.3
out of 5
Based on 10 reviews
5★
80%
4★
20%
3★
0%
2★
0%
1★
0%
Loving this bike!
Martian Manor Music✓ Verified Purchase•August 23, 2023
I've only had it for a few days, but I am very happy with it so far. I'll be riding daily so I'll update if anything changes. Decals came off easy and the remaining residue came off easily with a small amount of effort. Even pulled the Infinity stickers off of the tires. Now it's just this rad matte black ninja ride. Rides so well and got my adjustments done (seat, bars) very easily.
Vail CO Born in 74’
heath schaiberger✓ Verified Purchase•August 13, 2023
If you do your research the bike delivers . First few handle bar adjustments left me reminiscing what I recall living in the early & mid 80's. Ramps and street riding. Dreams do come true. Light weight pedals were my only tweak. I'm 5'10" 175 lbs. Geometry fits me perfectly. Thanks Mongoose for sticking to tradition and helping an old rider attack the park & pools"¦ which have always been my dream. Can't wait to hit the pump tracks & skate parks. Enjoy the pics of my garage. Let the practice begin✌ï¸
Solid deal if catching it when the price is right.
Kei✓ Verified Purchase•August 4, 2023
This review is coming from someone who has riden bmx for over 20 years, and has worked in or been a part of the bmx industry for over a 15 years now. So I know a a few things when it comes to high end, low end and everything in between.
With that out of that way, let me say this, the L100 has a lot of good going for it. If managing to catch it for under $400 you can't go wrong. The full 4130 chromoly frame fork and bars is a huge step in the right direction and an excellent starting foundation if wanting to upgrade the bike in the future. The sealed rear wheel, mid bottom bracket, and internal headset are also nice, but I'll touch on those in a bit. The frame accommodates wide tires, I've pictured a 2.4" eclat fireball in the rear. The forks also have ample space for large tires as well. Stock pivotal seat is pretty comfy. Brakes feel pretty solid for stock brakes.
Now, where the bike does fall short. The front wheel, it's unsealed. At the original asking price, there are other bike companies out there in this price range offering better specs. So I would have liked to see a sealed hub here. Now, the rims on these bikes are pinned instead of welded. While not a huge deal when you take in to account who this bike is marketed to, it's still something to make note of. The sprocket suffers from the "mass produced quickly" so it was rather bent causing some tight spots. Usually this is something you can't avoid on complete bikes like this. Stock chain is dainty, so I upgraded to a shadow v2 half link. There was grease on the clamp area of the stem where the bars go. I've never in my life greased that area, and I definitely recommend anyone gets one to check it before slapping the bars on.
All in all, I purchased this for my wife to pedal around with me at skateparks so I wasn't expecting to be wowed. However I wasn't let down by the quality. Mongoose may be known as a department store brand, but they do have quite the bmx heritage. I think if you can score this bike on a deep discount, or sale and swap out the wheels, chain, perhaps stem and cranks at some point. You'll have a solid bike. Straight out of the bike, it's great for beginnera and intermediate or that old guy getting back in to it after years off the bike.
Also, one thing to note, some of reviews are of people who bought a bmx bike and don't really understand what they bought. So for those reviews noting the chain guard or a kick stand. This isn't meant for a kickstand. And the chain guard is there because it has to be, you really aren't expected to keep it on the bike.
With that out of that way, let me say this, the L100 has a lot of good going for it. If managing to catch it for under $400 you can't go wrong. The full 4130 chromoly frame fork and bars is a huge step in the right direction and an excellent starting foundation if wanting to upgrade the bike in the future. The sealed rear wheel, mid bottom bracket, and internal headset are also nice, but I'll touch on those in a bit. The frame accommodates wide tires, I've pictured a 2.4" eclat fireball in the rear. The forks also have ample space for large tires as well. Stock pivotal seat is pretty comfy. Brakes feel pretty solid for stock brakes.
Now, where the bike does fall short. The front wheel, it's unsealed. At the original asking price, there are other bike companies out there in this price range offering better specs. So I would have liked to see a sealed hub here. Now, the rims on these bikes are pinned instead of welded. While not a huge deal when you take in to account who this bike is marketed to, it's still something to make note of. The sprocket suffers from the "mass produced quickly" so it was rather bent causing some tight spots. Usually this is something you can't avoid on complete bikes like this. Stock chain is dainty, so I upgraded to a shadow v2 half link. There was grease on the clamp area of the stem where the bars go. I've never in my life greased that area, and I definitely recommend anyone gets one to check it before slapping the bars on.
All in all, I purchased this for my wife to pedal around with me at skateparks so I wasn't expecting to be wowed. However I wasn't let down by the quality. Mongoose may be known as a department store brand, but they do have quite the bmx heritage. I think if you can score this bike on a deep discount, or sale and swap out the wheels, chain, perhaps stem and cranks at some point. You'll have a solid bike. Straight out of the bike, it's great for beginnera and intermediate or that old guy getting back in to it after years off the bike.
Also, one thing to note, some of reviews are of people who bought a bmx bike and don't really understand what they bought. So for those reviews noting the chain guard or a kick stand. This isn't meant for a kickstand. And the chain guard is there because it has to be, you really aren't expected to keep it on the bike.
Brings me back to my early teenage years
Mark✓ Verified Purchase•August 2, 2023
I absolutely love this bike. It's very light compared to others that I used to ride. Being 32 now I feel as if the 15 year old self has come out to play (warriors). It is ultra smooth ride at the given proce you can't beat it. I'm 5'8 and the l80 for 250 is a screaming deal and it's perfect at my height. I know this bike isn't meant to be fully seated rides but you definitely will need a better seat if your looking for longer rides. I mostly stand though but honestly I take this baby out for a good 10miles daily and am very pleased with the quality of the bike!
Nice bike for the price
Preston✓ Verified Purchase•July 16, 2023
I used to have a fitbikeco bike and am now getting back into the sport. This bike is really the best value. Full chromoly and double walled rims are hard to find at this price. The green also looks really nice.
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