Mongoose Legion L100 BMX - 2018


SKU: 558806

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 our pro athletes to develop the best line of Legion bikes yet.

More Information
Brand Mongoose
Type BMX
Pedals Included Yes
More Information
Eligible for cycle to work Not eligible
Bike Frame Size No
Primary Colour No
Brand Mongoose
Type BMX
Wheel Size No
Age Group No
Pedals Included Yes
Gender No
Frame 4130 chromoly; removable brake mounts; integrated headset & mid BB shell
Frame Material No
Forks 4130 chromoly; 1-1/8” threadless steerer; taper leg
Crank 3-piece tubular cromo,175 mm, 25T alloy chainring
Chain KMC® Z410
Pedals Plastic body with 9/16” axle
Brake Type U-Brakes
Gyro Braking System No
Front Brake Alloy U
Rear Brake Alloy U
Front Hub Alloy, 3/8” female axle with bolt; 36H
Rear Hub 36H, 9T Cassette, 14 mm axle, sealed bearing, AL shell
Driver 9T cassette driver
Rims Alloy double-wall 36H
Tyre Size 20 × 2.4 Front - 20 × 2.4 Rear
Handlebars Mongoose® chromoly 8.75”
Stem Mongoose® top load 50 mm Ext.
Headset Threadless 1 1/8” integrated
Seatpost Steel, 25.4; pivotal
Stunt Pegs No
Write Your Own Review
You're reviewing:Mongoose Legion L100 BMX - 2018
Your Rating
Standard £2.99 or FREE on orders over £10
- Order by 3pm (Sun-Thurs) to be delivered within 3 working days
- Most bikes delivered within 5 working days.
- An estimated delivery window will be shown at the checkout.
Next Day £4.99
- Order by 3pm (Sun-Thurs) for Next Day delivery
Click and Collect FREE
- Order by 3pm (Sun-Thurs) to pick up in 2 working days
- Order by 3pm (Sun-Thurs) to pick up in 5 working days

PLEASE NOTE: If you have ordered more than one item these may arrive in multiple deliveries.


To find out more about bike delivery, as well as our easy returns service, head over to our delivery and returns page.


All of the bikes we sell online are built and inspected by our qualified mechanics – just like when you buy a bike from one of our stores. All you’ll need to do when you receive the bike is straighten the handlebars and attach one of the pedals. This service is free, and included every time you buy a bike. Find out more.