Mongoose – Legion L18

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!

  • Mongoose® Hi-Ten steel frame and fork; 7” handlebar
  • 1-piece forged steel crank; 140 mm crank arms; 25/9t gearing
  • Aluminum single wall 28H rims; 18 x 2.3” tires

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FRAMEHi-Ten steel, BMX freestyle geometry

FORKHi-Ten steel

CRANK1-piece, forged steel, 25T steel chainring


BOTTOM BRACKETAmerican loose ball

REAR COGSingle-speed, 9T cassette driver

RIMSAluminum single wall, 24 mm ID, 28H

FRONT HUBSteel, ball bearing, 3/8 in axle, 28H

REAR HUBSteel, ball bearing, 3/8 in axle, 28H

SPOKES14G, steel, black

TIRES18 in x 2.3 in, wire bead

PEDALSMongoose, nylon

BRAKESU-brake, aluminum

HANDLEBARMongoose, Hi-Ten steel, 26 in width, 7 in rise

STEMMongoose, threadless front load, 48 mm

HEADSETThreadless, 1-1/8” external, retainer bearing

SEAT POSTSteel, 250 mm, 25.4 mm

SADDLEMongoose, steel rails

GRIPSMongoose Zig, 130 mm

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