Mongoose Legion L20 Freestyle BMX Green (2021)

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With the Legion Series, Mongoose offers a full line-up of freestyle BMX bikes for riders of all ages and ability levels. The Legion L20 is a great BMX-style bike for the rider looking to improve their ability on a quality ride, without breaking the bank. It boasts an extremely durable Hi-Ten steel frame, Handlebar and Fork combination. The Drivetrain features a 170mm three-piece forged steel crank with a 25T steel chainring and American loose ball bottom bracket. The fast rolling 20” x 2.3” tires are mounted on aluminium single wall 36H rims with 3/8” in axle front hub and 9T cog ball bearing cassette rear hub. Aluminium rear U-brake comes standard, a front calliper brake has also been added for the NZ market (not pictured). Suggested for riders 4’8” – 5’4”
Bottom bracket: American loose ball, 8-spline spindle
Brakes: U-brake, aluminum
Chain: KMC S1
Crankset: 3-piece, tubular chromoly, 25T steel chainring
Fork: Hi-Ten steel, 20"
Frame: Hi-Ten steel, BMX freestyle geometry
Freewheel: Single-speed, 9T cassette driver
Grip: Mongoose Mush, 145 mm
Handlebar: Mongoose, Hi-Ten steel, 28" width, 8" rise
Handlebar stem: Mongoose, threadless front load, 50 mm
Headset: Threadless, 1-1/8” external, retainer bearing
Hubs: FRONT: Steel, ball bearing, 3/8 in axle, 36H / REAR: Steel, sealed-bearing cassette, 14 mm axle, 36H
Pedals: Mongoose, nylon
Rim: Aluminum single wall, 24 mm ID, 36H
Saddle: Mongoose, steel rails
Seat post: Steel, 250 mm, 25.4 mm
Spokes: 14G, steel, black
Wheel size: 20"


Mongoose have been manufacturing performance bicycles since 1974. Founded in a So Cal garage, Mongoose Bikes has always been an innovator. From their current crop of BMX, Mountain and pavement bikes, Mongoose is still synonymous with bicycle performance.

Mongoose designers aren't wasting time watching reruns on ESPN2 - they're out testing their new designs at the park, on the track and on the hill. It's what drives them to cook things up like their Front Porch head tube, which lets you fine-tune the handling on their Black Diamond series mountain bikes, or Freedrive suspension technology, which eliminates pedal bob and gives you super-efficient full suspension. Experience that ultimately leads to better bikes for you. Mongoose bicycles don't just push the limits. They set new ones.

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