- Frame: 4130 Chromoly; Removable Brake Mounts; Integrated Headset and Mid BB Shell
- Fork: Hi-Ten Steel; 1-1/8" Threadless Steerer; Taper Leg
- Crank: 3-Piece Tubular Cromo, 175mm, 25T Steel Chainring
- Bottom Bracket: Mid Sealed Bearing; 8-Spline Axle
- Cog Set: 9T Cassette Driver
- Chain: KMC Z410
- Wheel Size: 20"
- Rims: Alloy Single-Wall 36H
- Front Hub: Steel, 3/8" Axle; 36H
- Pedals: Plastic Body with 9/16" Axle
- Handlebar: Mongoose Chromoly 8.75"
- Stem: Mongoose Top Load 50mm Ext.
- Headset: Threadless 1 1/8" Integrated
- Brake Levers: Alloy
- Spokes 14G Black
- Saddle: Mongoose Pivotal
- Seat Post: Steel, 25.4; Pivotal
- Length: 47.638"
- Width: 8.661"
- Height: 22.835"
- Weight: 11.89kg
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 toa fully park, street or dirt worth machine in the L100. Mongoose has infused over 40 years of experience along with feedback and insights from the pro athletes to develop the best like of Legion bikes yet.