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Mongoose Legion L100 20" Freestyle BMX Bike, Green - onlinesportsmall
Mongoose Legion L100 20" Freestyle BMX Bike, Green
Mongoose Legion L100 20" Freestyle BMX Bike, Green
Mongoose Legion L100 20" Freestyle BMX Bike, Green
Mongoose Legion L100 20" Freestyle BMX Bike, Green
Mongoose Legion L100 20" Freestyle BMX Bike, Green

Mongoose Legion L100 20" Freestyle BMX Bike, Green

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Regular price $113.87 $0.00
UPC : 38675157996

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Estimated delivery time 7-14 days
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Ride just like the pros on the Mongoose Legion L100, the flagship bike in our premium BMX Legion series. It all starts with the Mongoose 21" top tube full 4130 chromoly BMX frame, which features an integrated headset and removable brake mounts to provide a reliable and smooth ride. The 25x9t gearing, cassette driver, and durable 3-piece tubular cromo 175 mm cranks attach to an 8-spline spindle with a sealed mid bottom bracket bearing, so you can worry less about pedaling and focus more on your ride. All of those components mean stronger connection points and added durability, which means less bike maintenance for you or your child. Light and strong 36-spoke double-wall alloy rims support you and the 2.4" high volume tires. 8.75" Mongoose chromoly handlebars are held in place by a Mongoose top loader 50 mm stem, and the integrated Mongoose Pivotal saddle offers added comfort. All the components are there, now it just needs a serious rider. Elevate your ride on a Mongoose.


Mongoose Legion Freestyle BMX Bike Series

Legion L10 | Legion L20 | Legion L40 | Legion L60 | Legion L80 | Legion L100 | Legion L500

The Legion L100 features a professional-grade full 4130 chromoly frame (21” top tube), tapered headtube, mid BB shell, and removable brake mounts. The 4130 chromoly 8.75” rise handlebar and 50mm stem are designed for precision riding, while the aluminum double wall 36H rims and 2.4” BMX tires offer grip and durability when landing a trick. The 25x9T gearing with two-piece tubular chromoly 175mm hollow spindle cranks and mid sealed bottom bracket offer a clean, reliable drivetrains.


  • Horizontal Top Tube Length: 534mm
  • Stand Over Height: 565mm
  • Chain Stay Length: 348mm
  • The Mongoose Legion L100 is designed for beginner to advanced-level riders and has a suggested rider height of 5'8" and up



  • The Legion L100 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 quarterpipe. Suggested rider height is 5 ft 8 inches and Up
  • This ultra-durable L100 features a Mongoose full 4130 Chromoly frame, removable brake mounts, mid BB shell, and a 21-inch top tube length
  • The L100’s drivetrain features 175 millimeter 2-piece tubular chromoly hollow spindle cranks with a 25T alloy chainring and mid sealed bearing bottom bracket
  • The wheelset features 20 inches x 2.4 inches tires mounted on wide aluminum double wall 36H rims with 3/8 inches female axle front hub and 9T cog sealed bearing cassette rear hub
  • Alloy U-brake and brake levers provide precision speed control, while the 4130 chromoly handlebar and fork are joined by a 50 millimeter stem and threadless sealed integrated headset for maximum steering performance