Mongoose Legion L20 BMX Bike Green (2021)

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Features

Perfect Ride Guarantee

Perfect Ride Guarantee
If you don't love it, you can swap it, up to 30 days from purchase!* Learn more »

Free Bike Build

Free Bike Build
We'll build your bike for free when you click and collect at any 99 Bikes store.

First Free Service

First Free Tune-up
Every bike come with a complimentary free tune-up and safety check.

The Mongoose Legion L20 BMX is a 20 inch BMX to help you enter the world of freestyle in style. The Legion is a great first bike, with a range of reliable, safe and durable spec. The L20 is built with a tough Hi-Ten steel frame, forks and 8 inch handlebars which are light enough so that you can ride in control. The saddle and grips are comfortable to ensure that you can enjoy every ride without issue and the aluminium U-brake adds safe control this speed machine so that you can ride with confidence. The Mongoose Legion L20 BMX bike offers everything a beginner could ask for in a BMX, ready to hit the streets and dominate from day dot.

Features

  • Mongoose® Hi-Ten steel frame and fork; 8” handlebar
  • 3-piece chromoly tubular crank; 8-spline spindle
  • Aluminium single wall 36H rims; 2.3” tyres

More Information
SKU MGM41801U20OS
Season 2021
Size 20inch
Click & Collect Yes
Wheel Size 20"
Frame Material Steel
Fork Material Steel
Brake Type U-Brake
Bottom Bracket American loose ball
Cassette Single-speed, 9T cassette driver
Chain KMC S1
Fork Hi-Ten steel
Grips Mongoose, Hi-Ten steel, 26 in width, 7 in rise
Handlebar Mongoose, threadless front load, 48 mm
Headset Steel, 250 mm, 25.4 mm
Hubs Aluminum single wall, 24 mm ID, 28H
Pedals Mongoose, nylon
Rims 14G, steel, black
Saddle F: Steel, ball bearing, 3/8 in axle, 28H R: Steel, ball bearing, 3/8 in axle 28H
Seatpost Mongoose, steel rails
Stem Threadless, 1-1/8" external, retainer bearing
Spokes 20 in x 2.3 in, wire bead
Tyres 1-piece, forged steel, 25T steel chainring
Kids Bike Sizing 20 Inch

BMX Bike Geometry Diagram

Legend

ST Seat Tube

TT Top Tube

CS Chain Stay Length

HTA Head Tube Angle

STA Seat Tube Angle

BD Bottom bracket Drop

HT Head Tube

FL Fork Length

R Reach

S Stack

WB Wheel Base

Size

20inch
Wheel Size 20"
Frame Size 20inch
ST Seat Tube (mm) 223.0
TT Top Tube (mm) 515.0
CS Chain Stay Length (mm) 348.0
HTA Head Tube Angle (°) 74.0
STA Seat Tube Angle (°) 71.0
HT Head Tube (mm) 100.0
S Stack (mm) -
WB Wheel Base (mm) 916.0

 

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