The Mongoose Legion L40 is the ultimate BMX bike for kids ages 8 and up, designed for riders who want to take on the park, street, and dirt trails. Part of the Mongoose Legion Series, this boy's bike is built to handle freestyle BMX riding with ease and precision, whether your young rider is just starting out or perfecting their tricks. With a strong Hi-Ten steel frame and 8.75” rise handlebars, the Legion L40 offers excellent control and stability for a smooth, responsive ride. The 2.3” BMX tires and durable aluminum rims provide great grip, giving riders the confidence to land tricks and handle rough terrain. The bike is equipped with a 25x9T gearing system, 3-piece tubular chromoly cranks, and a mid-sealed bottom bracket for a clean, reliable drivetrain that’s perfect for any BMX adventure. The aluminum U-brake and alloy brake levers provide precise speed control, while the Hi-Ten steel BMX fork ensures extra strength and stability. Ready to ride straight out of the box, the Mongoose Legion L40 is the perfect kids bike for young BMX enthusiasts looking to take their skills to the next level and enjoy hours of fun on their bike.
| Frame | Hi-Ten Steel, BMX freestyle geometry, mid BB shell |
|---|---|
| Fork | Hi-Ten Steel |
| Crank | 3-piece, tubular chomoly, 25T steel chainring |
| Chain | KMC S1 |
| Bottom Bracket | Mid-sealed bearing, 8-spline spindle |
| Rear Cog | Single-speed, 9T casette driver |
| Rims | Aluminum single wall, 24mm 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 |
| Tires | 20 in x 2.3 in, wire bead |
| Pedals | Mongoose, nylon |
| Brakes | U-brake, aluminum |
| Handlebars | Mongoose, Hi-Ten steel, 28 in width, 8 in rise |
| Stem | , retainer bearing |
| Headset | Threadless, integrated 1-1/8 |
| Seat Post | Steel, 250mm, 25.4 mm |
| Saddle | Mongoose MushXL, 160mm |
| Grips |
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