Mongoose Legion L18 (2025)

With the Legion Series, Mongoose offers a full line of freestyle BMX bikes for riders of all ages and ability levels. The Legion L18 is the perfect in-between option for a kid who wants what comes on a standard 20” BMX but needs a slightly smaller frame!

Specifications

Frame - Hi-Ten steel, BMX freestyle geometry
Fork - Hi-Ten steel, 18"
Crank - 1-piece, forged steel, 25T steel chainring
Chain - KMC S1
Bottom Bracket - American loose ball
Rear Cog - Single-speed, 9T cassette driver
Rims - Aluminum single wall, 24 mm ID, 36H
Front - Hub Steel, ball bearing, 3/8 in axle, 36H
Rear - Hub Steel, sealed-bearing cassette, 3/8 in axle, 36H
Spokes - 14G, steel, black
Tires - 18 in x 2.3 in, wire bead
Pedals - Mongoose, nylon
Brakes - U-brake, aluminum
Brake Levers - Aluminum
Handlebars - Mongoose, Hi-Ten steel, 25.25 in width, 7 in rise
Stem - Mongoose, threadless top load, 40 mm
Headset - Threadless, 1-1/8" external, retainer bearing
Seat Post - Steel, 150 mm, 25.4 mm
Saddle - Mongoose, steel rails
Grips - Mongoose Zig, 130 mm