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2025 Mongoose Legion L20 20" BMX - Black - 20.25" Top Tube

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$469.95

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✅This bike is sold fully assembled, ready to ride and is available for in store pick up or local delivery only.

2025 MONGOOSE LEGION L20 20" BMX - BLACK - 20.25" TOP TUBE

The 2025 Mongoose Legion L20 20" BMX bike is a fantastic entry-level bike, designed to help new riders get started in the world of BMX. Built with a durable, high-tensile steel frame, the L20 offers the strength and stability needed for learning basic tricks and gaining confidence. The L20 is perfect size for young riders or beginners, providing excellent maneuverability and control. With a sleek stealth black finish the L20 features a 25/9 drivetrain, 20" x 2.3" tyre for maximum grip and three piece cranks the L20 is idealy spec'd for young riders or beginners looking to take their riding to the next level. Purchase your new 2025 Mongoose Legion L20 BMX bike with Casey Cycles, shop online or in-store with free local delivery throughout South East Melbourne within 20km of our Cranbourne bike store.

FEATURES

  • Strong hi-tensile steel frame, fork and handlebar.
  • 3 piece tubular chromoly cranks with 25T chainring.
  • 20.25" top tube length. Suggested rider height approx 150 to 165cm.

SPEC

  • Frame: Hi-Ten steel, BMX freestyle geometry with 20.25" top tube.
  • Fork: Hi-Ten steel.
  • Crankset: 3-piece, tubular chromoly, 25T steel chainring.
  • Bottom Bracket: American loose ball, 8-spline spindle.
  • Chain: KMC S1.
  • Pedals: Mongoose, nylon.
  • Brake: U-brake, aluminium
  • Grips: Mongoose Mush, 145mm.
  • Handlebar: Mongoose, Hi-Ten steel, 28" wide x 8" rise.
  • Stem: Mongoose, threadless top load, 50mm.
  • Headset: Threadless, 1-1/8" external, retainer bearing.
  • Seatpost: Steel, 250 mm x 25.4mm.
  • Saddle: Mongoose, steel rails.
  • Hubs: Steel.
  • Driver: 9T cassette driver.
  • Rims: Aluminum single wall, 24mm ID, 36H.
  • Spokes: 14G, steel, black.
  • Tyres: 20" x 2.3".
  • Colour: Black.

GEOMETRY

Buy your new Mongoose Legion L20 20" BMX bike at Casey Cycles, shop online or in-store today!

  • Please note that the specification of this bike may be impacted by running substitution changes. 
  • Sizing to be used as a reference only. Please visit us in-store to determine the correct sizing.
  • Recommended Retail Prices are subject to change without notice and may vary depending on freighting and assembly costs.
  • Due to the terms of the Mongoose Bicycles dealer agreement all Mongoose bikes are sold fully assembled and available for in-store pick up or local delivery only and cannot be shipped.
SKU MGM41463U20OS
Brand Mongoose

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