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![Mongoose 20" Legion L100 BMX Bike [Black] (2017)](https://99cycing.com/wp-content/uploads/2025/11/1764231345/mongoose-20-legion-l100-bmx-bike-black-2017-1764231350.webp)
Unconditional Satisfaction GuaranteeNo Shipping Fees Above 302 Months to Decide. Returns Simplified.| Frame | Full Chromoly Steel |
| Fork | Cromo Legs & Steerer |
| Drivetrain – crank | 3pc Tubular Cromo,175 mm, 25T Alloy chainring |
| Drivetrain chain | KMC HL710 half link type |
| Bottom Bracket | Mid Sealed Bearing; 48 spline axle |
| Shifters | n/a |
| Cog Set | 9T cassette driver |
| Front Derailleur | n/a |
| Rear Derailleur | n/a |
| Wheel Size | 20″ |
| Rims | Alloy wide double wall 36H |
| Front Hub | 36H Alloy, 3/8″ axle |
| Rear Hub | 36H, 9T Cassette, 14 mm axle, 5 Sealed bearing, AL Shell |
| Spokes | 14G Black |
| Tyres | 20 x 2.4 |
| Pedals | Plastic body with 9/16″ axle |
| Brakes | Alloy U-Brake |
| Front Brake | N/A |
| Rear Brake | Alloy U-Brake |
| Brake Levers | Alloy |
| Handle Bars | Mongoose Full Chromoly 8.75″ |
| Stem | Mongoose Top Loader 45mm Ext. |
| Head Set | Threadless 1 1/8″ |
| Seat Post | Steel, 25.4 Pivotal |
| Saddle | Mongoose Pivotal |
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