The Mongoose Legion L100 BMX bike is built for riders ages 8 and up, offering a perfect mix of performance and durability for park, street, and dirt riding. Featuring a strong 4130 chromoly frame with a 21” top tube, this boys bike is designed for precision and control. The 8.75” rise handlebars, 50mm stem, and sealed integrated headset ensure smooth, responsive steering. Aluminum U-brakes and brake levers provide excellent speed control, while the wide 36H aluminum rims and 2.4” tires offer superior grip and durability for landing tricks. With a 25x9T gearing and tubular chromoly cranks, the L100 delivers a reliable, smooth ride. Ideal for both beginner and experienced BMX riders, this kids bike is ready to handle any challenge, from ramps to trails. Perfect for young BMX enthusiasts, the Mongoose Legion L100 is the ultimate bike to level up your riding experience.
The Mongoose Legion L100 BMX bike is built for riders ages 8 and up, offering a perfect mix of performance and durability for park, street, and dirt riding. Featuring a strong 4130 chromoly frame with a 21” top tube, this boys bike is designed for precision and control. The 8.75” rise handlebars, 50mm stem, and sealed integrated headset ensure smooth, responsive steering. Aluminum U-brakes and brake levers provide excellent speed control, while the wide 36H aluminum rims and 2.4” tires offer superior grip and durability for landing tricks. With a 25x9T gearing and tubular chromoly cranks, the L100 delivers a reliable, smooth ride. Ideal for both beginner and experienced BMX riders, this kids bike is ready to handle any challenge, from ramps to trails. Perfect for young BMX enthusiasts, the Mongoose Legion L100 is the ultimate bike to level up your riding experience.
in 3 offers
last seen 23 June 2026
The lowest price we last saw for Mongoose Legion L100 BMX Bike 2021 Green was $699.00 at ABC Bikes, compared across 3 retailers (last seen 23 June 2026). Prices may have changed since.
The all-time low we recorded was $545.00 on 1 Dec 2024.
Prices last updated 23 June 2026.
Mongoose Legion L100 BMX Bike 2021 Green
The Mongoose Legion L100 BMX bike is built for riders ages 8 and up, offering a perfect mix of performance and durability for park, street, and dirt riding. Featuring a strong 4130 chromoly frame with a 21” top tube, this boys bike is designed for precision and control. The 8.75” rise handlebars, 50mm stem, and sealed integrated headset ensure smooth, responsive steering. Aluminum U-brakes and brake levers provide excellent speed control, while the wide 36H aluminum rims and 2.4” tires offer superior grip and durability for landing tricks. With a 25x9T gearing and tubular chromoly cranks, the L100 delivers a reliable, smooth ride. Ideal for both beginner and experienced BMX riders, this kids bike is ready to handle any challenge, from ramps to trails. Perfect for young BMX enthusiasts, the Mongoose Legion L100 is the ultimate bike to level up your riding experience.
The Mongoose Legion L100 BMX bike is built for riders ages 8 and up, offering a perfect mix of performance and durability for park, street, and dirt riding. Featuring a strong 4130 chromoly frame with a 21” top tube, this boys bike is designed for precision and control. The 8.75” rise handlebars, 50mm stem, and sealed integrated headset ensure smooth, responsive steering. Aluminum U-brakes and brake levers provide excellent speed control, while the wide 36H aluminum rims and 2.4” tires offer superior grip and durability for landing tricks. With a 25x9T gearing and tubular chromoly cranks, the L100 delivers a reliable, smooth ride. Ideal for both beginner and experienced BMX riders, this kids bike is ready to handle any challenge, from ramps to trails. Perfect for young BMX enthusiasts, the Mongoose Legion L100 is the ultimate bike to level up your riding experience.
Last updated at 23/06/2026 23:55:10
2025 Mongoose Legion L100 - 21.00 TT / Green
Mongoose Legion L100 20" Green
Delivery between 29 June – 7 July $92.75
Mongoose Legion L100 (2025)
Free delivery between Thu – Fri
originally posted on Google
Overall good bike but the handle bars will not stay tighten so they move easily.
originally posted on catch.com.au
Great bike, great buy, great quality. Really happy with this purchase
| Variant | |
| size | 21.00 TT |
| color | Green |
2025 Mongoose Legion L100 - 21.00 TT / Green
Mongoose Legion L100 20" Green
Delivery between 29 June – 7 July $92.75
Mongoose Legion L100 (2025)
Free delivery between Thu – Fri
Overall good bike but the handle bars will not stay tighten so they move easily.
Great bike, great buy, great quality. Really happy with this purchase
| Variant | |
| size | 21.00 TT |
| color | Green |
