Mongoose Legion L100 Freestyle BMX Bike for Advanced-Level Riders, Adult Men Women, 4130 Chromoly Frame, Double Walled Rims, and 20-Inch Wheels, Green

Mongoose Legion L100 Freestyle BMX Bike for Advanced-Level Riders, Adult Men Women, 4130 Chromoly Frame, Double Walled Rims, and 20-Inch Wheels, Green
Mongoose Legion L100 Freestyle BMX Bike for Advanced-Level Riders, Adult Men Women, 4130 Chromoly Frame, Double Walled Rims, and 20-Inch Wheels, Green
Mongoose Legion L100 Freestyle BMX Bike for Advanced-Level Riders, Adult Men Women, 4130 Chromoly Frame, Double Walled Rims, and 20-Inch Wheels, Green
Mongoose Legion L100 Freestyle BMX Bike for Advanced-Level Riders, Adult Men Women, 4130 Chromoly Frame, Double Walled Rims, and 20-Inch Wheels, Green
Mongoose Legion L100 Freestyle BMX Bike for Advanced-Level Riders, Adult Men Women, 4130 Chromoly Frame, Double Walled Rims, and 20-Inch Wheels, Green
Mongoose Legion L100 Freestyle BMX Bike for Advanced-Level Riders, Adult Men Women, 4130 Chromoly Frame, Double Walled Rims, and 20-Inch Wheels, Green
Mongoose Legion L100 Freestyle BMX Bike for Advanced-Level Riders, Adult Men Women, 4130 Chromoly Frame, Double Walled Rims, and 20-Inch Wheels, Green

Key features

  • L100 is a fully park, street or dirt-worthy freestyle BMX bike, beginner-level curb jumps all the way up to advanced aerial tricks on a quarterpipe, Suggested rider height is 5'8" and Up
  • Extreme durability, Mongoose full 4130 Chromoly frame, removable brake mounts, mid BB shell, featuring a 21" top tube length
  • Drivetrain features 175 mm two-piece tubular chromoly hollow spindle cranks with a 25T aluminum chainring and mid sealed bearing bottom bracket
  • Wheelset features 20" x 2.4" tires mounted on wide aluminum double 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.
CategoryBMX Bikes
Size20-Inch Wheels
ColorGreen
WarrantyLimited Lifetime

Mongoose Legion L100 Freestyle BMX Bike for Advanced-Level Riders, Adult Men Women, 4130 Chromoly Frame, Double Walled Rims, and 20-Inch Wheels, Green

List Price: $619.82$557.84DEALYou Save: $61.98 (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 purchasers
4.3
out of 5
Based on 10 reviews
5
80%
4
20%
3
0%
2
0%
1
0%
Brings me back to my early teenage years
Mark✓ Verified PurchaseSeptember 21, 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!
pound for pound - best beginner BMX ???
rube✓ Verified PurchaseAugust 25, 2023
first of all - i got this bike for an "steal" open box - $320.00 prime - so my review is kinda skewed -

but indeed if you can get this bike for yes i hear you - they sell mongoose at walmart (no doubt) - but look at the specs -
chromolly frame, forks, and handlbars, double walled rims, integrated head bearings, pivot seat
try to find this on any other "branded" bike - PK Ripper,GT, WTP, Cult, Subrosa, and Kink (on a side note the Kink Whip) is about as close as one can come - but the 2022 models are gone and now the 2023 models are $529.00

again - my review is a bit skewed - as frankly i got an open box steal - indeed box was damaged - but bike was 100% new -

look i aint no serious rider - just enjoying my inner 12 year old

on side note (being 5-8) - for me the seat post is a wee low at 270 mm - so i ordered a 320mm to replace it
but again no major tricks here - just street cruising - so each to their own... cheers

UPDATE !! - price today 8-23-22 ($382.00) - not prime - but indeed pick this steal up !!!!
again pound for pound - compare the specs to any other BMX on Amazon or and other BMX bikes -
GT, Redline, WTP, Subrosa, Cult - you simply cannot do any better !!!
Great bike
justin✓ Verified PurchaseJuly 22, 2023
Son loves it. It was easy to put together. The color is unique.
Solid deal if catching it when the price is right.
Kei✓ Verified PurchaseJuly 17, 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.
It's my bike, and it's very fast!
OhOkDave✓ Verified PurchaseJune 30, 2023
I bought this L100 last fall/winter with a "used, like new condition" and couldn't be happier with it. I ride it to and from work every single day. I have put it through some rough riding, jumping everything i can everywhere I go. This is my first all chromally steel bike, and I can't imagine ever getting anything but that now. I can forsee it lasting a very long time with proper maintenance and care. Just wish it had a front brake and a slightly smaller back tire, as these tires do make it harder to accelerate do to the amount of grip and friction they have. 2.4" wide tires are much much different than anything else I've ever had. I think 2.3" would be perfect on the back. Have some good lithium grease ready for the bearings on the front fork when you install. This bike has been my best friend for the past 8 months or so, and besides just regular maintenance and tightening the crank and chain once a month, and a couple flat tires repaired, it had been very reliable and indestructible as far as what I personally put it through. If you've never had an all chromally (frame, forks, handlebars, crank arms) you are in for a real treat. I would hands down buy this bike again. Either that or piece together and build my own.
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