Mongoose Legion L40 BMX BLACK / Kids Bike 2021

451,00 Contact Store for Availability
With the Legion Series, Mongoose offers a full line of freestyle BMX bikes for riders of all ages and ability levels. The Legion L40 is a fully park, street or dirt worthy freestyle BMX bike that offers everything a new rider could need to bust their firs Read more
  • Customer service driven team
  • 4.9 out of 5 stars customer feedback
  • Competitive pricing
  • Items dispatched within 24 hours.
  • Customer support 7 days a week
  • Bikes delivered fully assembled in 7 days. Free delivery


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Key Features:

  • Hi-Ten steel frame, removable brake mounts, and mid BB shell.
  • 175mm 3-piece tubular chromoly hollow spindle cranks with a 25T steel chainring and mid sealed bearing bottom bracket.
  • 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.
  • Hi-Ten steel handlebar and fork, 50mm stem, threadless sealed integrated headset, and Aluminum U-brake.
  • 20.5-inch top tube length. Suggested rider height is 5’0” – 5’6”.


  • Frame: Hi-Ten steel, BMX freestyle geometry, mid BB shell
  • Fork: Hi-Ten steel
  • Crank: 3-piece, tubular chromoly, 25T steel chainring
  • Chain: KMC S1
  • Bottom Bracket: Mid sealed bearing, 8-spline spindle
  • Drivetrain: Single-speed, 9T cassette driver
  • Rims: Aluminum single wall, 24 mm ID, 36H
  • Front Hub: Steel, ball bearing, 3/8 in axle, 36H
  • Rear Hub: Steel, sealed-bearing cassette, 14 mm axle, 36H
  • Spokes: 14G, steel, black
  • Tyres: 20 in x 2.3 in, wire bead
  • Pedals: Mongoose, nylon
  • Brakes: U-brake, aluminum
  • Handlebar: Mongoose, Hi-Ten steel, 28 in width, 8 in rise
  • Stem: Mongoose, threadless top load, 50 mm
  • Headset: Threadless, integrated 1-1/8", retainer bearing
  • Seat Post: Steel, 250 mm, 25.4 mm
  • Saddle: Mongoose Unifier, 1 piece rails
  • Grips: Mongoose MushXL, 160 mm
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