Mongoose Legion L40 Street Freestyle BMX Bike - White
SKU: M41500U10OS
BRAND: Mongoose
Specifications
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Frame
Hi-Ten steel, BMX freestyle geometry, integrated headset, mid BB shell
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Fork
Hi-Ten steel
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Crank
3-piece, tubular chromoly, 25T steel chainring
- Chain
KMC S1 -
Bottom Bracket
Mid sealed bearing, 8-spline spindle
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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, 14 mm axle, 36H - Spokes
14G, steel, black
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Tires
20 in x 2.3 in, wire bead
- Pedals
Mongoose, nylon -
Brakes
U-brake, aluminum
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Headset
Threadless, integrated 1-1/8", cartridge bearing
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Handlebar
Mongoose, Hi-Ten steel, 28 in width, 8 in rise
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Stem
Mongoose, threadless top load, 50 mm
- Seat Post
Steel, 250 mm, 25.4 mm -
Grip
Mongoose MushXL, 160 mm
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Saddle
Mongoose Unifier, 1 piece rails
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Size
One size

Mongoose Legion Freestyle BMX Bike SeriesThe Legion L40 features a Hi-Ten steel frame (20.5” top tube), tapered headtube, mid BB shell, and removable brake mounts. The L40 Hi-Ten steel 8.75” rise handlebar and 50mm stem are designed for precision riding, while the aluminum single wall 36H rims and 2.3” BMX tires offer grip and durability when landing a trick. The 25x9T gearing with 3-piece tubular chromoly 175mm hollow spindle cranks and mid sealed bottom bracket offer a clean, reliable drivetrains.
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Mongoose Legion L40 Freestyle BMX BikeFor 45 years, Mongoose has been in the dirt, down the trails, and on the ramps. With the Legion Series, Mongoose offers a full line of freestyle BMX bikes for riders of all ages and ability levels. The Legion L40 is designed to be a great introduction into the world of BMX. |
![]() Hi-Ten Steel FrameThe durable L40 features a Hi-Ten steel frame, removable brake mounts, mid BB shell, and a 20.5-inch top tube length. Suggested rider height is 5’0” – 5’6”. |
![]() Drivetrain and ChainringThe L40’s drivetrain features 175mm 3-piece tubular chromoly hollow spindle cranks with a 25T steel chainring and mid sealed bearing bottom bracket. |
![]() Wheelset and HubsThe wheelset features 20 inch x 2.3 inch tires mounted on aluminum single wall 36H rims with 3/8” female axle front hub and 9T cog sealed bearing cassette rear hub. |
![]() Handlebars and StemAluminum U-brake and brake levers provide precision speed control, while the Hi-Ten steel handlebar and fork are joined by a 50mm stem and threadless sealed integrated headset for maximum steering performance. |
Bike Assembly:
Free bike assembly on all orders in the UAE upon request.
Delivery:
2 to 4 working days
Refund or Exchange:
Our policy lasts 14 days. If 14 days have gone by since your purchase, unfortunately we can’t offer you a refund or exchange.
To be eligible for a return, your item must be unused and in the same condition that you received it. It must also be in the original packaging.
Note: No returns on Fuji, Jamis, Dahon if the bike is assembled.