Mongoose Legion Freestyle BMX Bike Line for Kids, Youth and Beginner-Level to Advanced Adult Riders, 20-Inch Wheels, Steel

Bike type BMX Bike
Age Range 7 – 9 years
Brand Mongoose
Number of speeds 1
Colour Black
  • The Legion L20 is a stylish freestyle BMX bike that offers everything a beginning rider needs to hit the streets and pop off curbs! Suggested rider height is 4’8” – 5’4”.
  • The durable L20 features a Hi-Ten steel frame, removable brake mounts, and a 20.25-inch top tube length.
  • The L20’s drivetrain features 170mm one-piece forged steel cranks with a 25T alloy chainring and American loose ball bottom bracket.
  • The wheelset features 20” x 2.3” tires mounted on 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 Hi-Ten steel handlebar and fork are joined by a 50mm stem and threadless sealed integrated headset for maximum steering performance.
Category:

Description

For 45 years, Mongoose has been in the dirt, down the trails, and on the ramps. With the Legion Series, Mongoose offers a full line of freestyle BMX bikes for riders of all ages and ability levels. The Legion L20 was designed to be a fully park, street and dirt worthy BMX bike. The Legion L20 features a Hi-Ten steel frame (20.25” top tube), tapered headtube, and removable brake mounts. The L20 Hi-Ten steel 8” rise handlebar and 48mm stem are designed for precision riding, while the wide aluminum single wall 36H rims and 2.3” BMX tires offer grip and durability. The 25x9T gearing with one-piece tubular chromoly 170mm hollow spindle cranks and American loose ball bottom bracket offer a clean, reliable drivetrains. An alloy U-brake with alloy brake levers provide speed control, while the Hi-Ten Steel BMX fork with 1-1/8″ threadless steerer and taper leg helps maximize performance. This bike ships ready to be assembled and comes with a 5-year limited warranty on the frame and a 1-year limited warranty on parts.


From the manufacturer

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Mongoose Legion L20 Freestyle BMX Bike

For 45 years, Mongoose has been in the dirt, down the trails, and on the ramps. With the Legion Series, Mongoose offers a full line of freestyle BMX bikes for riders of all ages and ability levels. The Legion L20 is designed to be a great introduction into the world of BMX.

Mongoose Legion Freestyle BMX Bike Series

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

The Legion L20 features a Hi-Ten steel frame (20.25” top tube), tapered headtube, and removable brake mounts. The L20 Hi-Ten steel 8” rise handlebar and 48mm stem are designed for precision riding, while the wide aluminum single wall 36H rims and 2.3” BMX tires offer grip and durability. The 25x9T gearing with one-piece tubular chromoly 170mm hollow spindle cranks and American loose ball bottom bracket offer a clean, reliable drivetrains.

  • Horizontal Top Tube Length: 515mm
  • Stand Over Height: 565mm
  • Chain Stay Length: 348mm
  • The Mongoose Legion L20 is designed for beginner-level riders and has a suggested rider height of 4’8″-5’4″

Mongoose Legion L20 Freestyle BMX Bike

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Hi-Ten Steel Frame

The durable L20 features a Hi-Ten steel frame, removable brake mounts, and a 20.25-inch top tube length. Suggested rider height is 4’8” – 5’4”.

Drivetrain and Chainring

The L20’s drivetrain features 170mm one-piece forged steel cranks with a 25T alloy chainring and American loose ball bottom bracket.

Wheelset and Hubs

The wheelset features 20 inch x 2.3 inch tires mounted on aluminum single wall 36H rims with 3/8” female axle front hub and 9T cog sealed bearing cassette rear hub.

Handlebars and Stem

Aluminum U-brake and brake levers provide precision speed control, while the Hi-Ten steel handlebar and fork are joined by a 50mm stem and threadless sealed integrated headset for maximum steering performance.

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For almost 40 years, Mongoose has been in the dirt, on the trails and off the ramps. Founded in 1974 in a Southern California garage, Mongoose has always been an aggressive brand with products that push the limits of what a rider can do. From the biggest hits on the mountain or in the park to the urban jungle, Mongoose is an authentic brand that produces durable products built for real riders.

From the first products – to our current crop of BMX, Mountain and pavement bikes, Mongoose is synonymous with bikes that perform on the smoothest single track to the biggest drops and riders looking for trails that never end and keep the party going.

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