Mongoose Legion 18w Kids Bike 2019

Article number: M51559M10OS
Availability: Contact Store for Availability

Ranging from the LXS to the L100, the Legion series of bikes offers everything a BMX rider could need from your first true BMX bike in the L18 to a fully park, street and dirt worthy machine in the L100. Mongoose® has infused over 40 years of experience along with feedback and insights from our pro riders to develop the best line of Legion bikes yet.


  • Frame: Hi-Ten steel, BMX geometry
  • Fork: Hi-Ten steel, 1" threaded steerer
  • Crank: 1-piece
  • Chain: KMC® Z410
  • Bottom Bracket: American loose ball
  • Cog Set: 16T freewheel
  • Rims: aluminum single wall 36H
  • Front Hub: Steel, 3/8" axle; 36H
  • Rear Hub: Steel, 3/8" axle; 36H
  • Spokes: 14G chrome
  • Tires:20" x 2.0"
  • Pedals: BMX, nylon
  • Brakes: steel linear pull
  • Brake Levers: aluminum/Resin
  • Handlebar: Mongoose®, Hi-Ten, 7"
  • Grips: Mongoose® Zig, 130 mm
  • Stem:Mongoose® front load 36 mm ext., quill
  • Headset: threaded, 1"
  • Seat Post: steel, 25.4 mm
  • Saddle: Mongoose® slim-railed
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