- Frame: Hi-Ten Steel
- Fork: Hi-Ten Steel, 1" Theadless Steerer
- Rims: Alloy Single-Wall 36H
- Front Hub: Steel, 3/8" Axle, 36H
- Rear Hub: Steel, 3/8" Axle, 36H
- Spokes: 14G Chrome
- Tires: 20 x 2"
- Pedals: Plastic Body with 1/2" Axle
- Crank: 1-Piece Forged Steel 152mm, 36T Steel Chainring
- Bottom Bracket: American Loose Ball
- Chain: KMC Z410
- Rear Cogs: 16T Freewheel
- Handlebar: Mongoose Hi-Ten 7"
- Grips: Mongoose Front Load 36mm Ext., Quilled
- Headset: Threaded 1"
- Brakes: Steel Linear-Pull
- Brake Levers: Alloy/Resin
- Saddle: Mongoose Slim Railed
- Seatpost: Steel, 25.4
- Length: 43.31"
- Width: 7.48"
- Height: 21.26"
- Weight: 11.53kg
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 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 line of Legion bikes yet.