With the Legion Series, Mongoose offers a full line of freestyle BMX bikes for riders of all ages and ability levels. The Legion L100 was designed to be a fully park, street and dirt worthy BMX bike that offers everything a rider could need from beginner level curb jumps all the way up to advanced aerial tricks on a quarterpipe!

As a cycling enthusiast, finding the perfect bike that fits all your needs can be challenging. If you’re looking for a bike that can take on any terrain, look no further than the MongooseLegion L100.

The Mongoose L100 frame is made of high-quality Chromoly, which is a type of steel that is strong and durable. This makes it ideal for riding on any terrain, as it can withstand the bumps and bruises that come withshredding.

Removable Brake Mounts: The Mongoose full 4130 Chromoly frame comes with removable brake mounts, which means you can easily switch between brakes and no brakes.

In addition to the Chromoly frame, the Mongoose bike also features 175mm 2-piece tubular chromoly hollow spindle cranks. This type of crank is designed to be lightweight yet durable, making it perfect for BMX riding. It also comes with a 25T alloy chainring and a mid-sealed bearing bottom bracket, which provide smooth and reliable performance.

The Mongoose L100 also comes with wide aluminum double wall 36H rims. These rims are designed to be strong and durable, which makes them ideal for off-road riding. They also come with 20 x 2.4 tires, which provide excellent traction and stability on any terrain.

The bike also features a 3/8 female axle front hub and 9T cog sealed bearing cassette rear hub.

FRAME
4130 chromoly, BMX freestyle geometry, removable brake mounts, integrated headset, mid BB shell
FORK
4130 chromoly
CRANK
2-piece, tubular chromoly hollow spindle, 25T aluminum chainring
CHAIN
KMC S1
BOTTOM BRACKET
Mid sealed bearing, 8-spline spindle
REAR COG
Single-speed, 9T cassette driver
RIMS
Xposure Infinity-XD, aluminum double wall, 30 mm ID, 36H
FRONT HUB
Aluminum, ball bearing, 3/8 in axle, 36H
REAR HUB
Aluminum, sealed-bearing cassette, 14 mm axle, 36H
SPOKES
14G, steel, black
TIRES
20 in x 2.4 in, wire bead
PEDALS
Mongoose, nylon
BRAKES
U-brake, aluminum
HANDLEBAR
Mongoose, 4130 chromoly, 29 in width, 8.75 in rise
STEM
Mongoose, threadless top load, 50 mm
HEADSET
Threadless, integrated 1-1/8, cartridge bearing
SEAT POST
Pivotal, steel, 250 mm, 25.4 mm
SADDLE
Mongoose Pivotal
GRIPS
Mongoose MushXL, 160 mm

GEOMETRY & SIZING