Mongoose Legion L500 Freestyle BMX Bike, 20" Wheels, Ages 8 and up, Silver View more from us on our brand page. The Legion L500 is a fully park, street or dirt worthy freestyle BMX bike that offers everything a rider could need; from beginner level curb jumps all the way up to advanced aerial tricks on a quarter pipe. Suggested rider age 8 and older along with a height of 5'8" and up. This ultra-durable L500 features a Mongoose full 4130 chromo frame, removable brake mounts, and mid BB shell. 21” top tube length. The l500's drivetrain features 175 mm two-piece tubular chromo hollow spindle cranks with a 25T aluminum chain ring and mid sealed bearing bottom bracket. The 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 free coaster 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 thread less sealed integrated headset for maximum steering performance.
Model Number:
M41100U10OS-PC
Product SKU:
248493748
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Model: Mongoose Legion L500 Freestyle BMX Bike, 20" Wheels, Ages 8 and up, Silver
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Sort: Lowest to Highest | Last Updated 9/14/2025, 01:52 AM
Until 4/20 you can get the Mongoose Legion L100 for $240. Specs are pretty close to this, with the main differences being no freehub (cassette) and the front hub isn't sealed. Some riders don't like the slack in the freehub or don't need to be able to roll back.
I bought one. Repped. I don't know why. I'm 43 and made me think of my childhood where I always wanted one of these but could never have one. Now I can. lol. My sons 8 maybe he will like it
Until 4/20 you can get the Mongoose Legion L100 for $240. Specs are pretty close to this, with the main differences being no freehub (cassette) and the front hub isn't sealed. Some riders don't like the slack in the freehub or don't need to be able to roll back.
Another notable difference is L500 has 48 spline cranks, L100 has 8 spline.
In the context of BMX bikes, 48-spline cranksets are generally preferred over 8-spline cranksets due to their higher durability and strength. 48-spline cranksets, also referred to as spline drive, have a more precise fit between the crank spindle and sprocket, leading to reduced wear and tear, especially under continuous pressure. 8-spline cranksets, while a more affordable option, tend to wear out quicker, especially with heavier use.
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In the context of BMX bikes, 48-spline cranksets are generally preferred over 8-spline cranksets due to their higher durability and strength. 48-spline cranksets, also referred to as spline drive, have a more precise fit between the crank spindle and sprocket, leading to reduced wear and tear, especially under continuous pressure. 8-spline cranksets, while a more affordable option, tend to wear out quicker, especially with heavier use.
Thanks. That helps lol. I just got mine in the mail. Purely nostalgia. I'm too old to pull off tricks.
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Price on this is SLICK!
This ultra-durable L500 features a Mongoose full 4130 chromo frame, removable brake mounts, and mid BB shell. 21" top tube length.
The bones are good you can replace parts as needed with better ones
Legion L500 [mongoose.com]
Legion L100 [mongoose.com]
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