The Bergamonster 20 is a lightweight mountain bike for kids, it features a suspension fork and child-friendly geometry, for easy, ergonomic pedaling.
| Fork: | Suntour XCT JR | 
| Hubs: | BGM Comp | 
| Rims: | Shining V-6NS | 
| Stem: | BGM Comp | Syncros Stem Protector | 
| Chain: | KMC Z7 | 
| Color: | Purple | 
| Frame: | Lite AL-6061 | 
| Grips: | BGM Kids | 
| Tires: | Kenda Booster | 20x2.20″ | 
| Brakes: | Tektro V-Brake | 
| Gender: | kids | 
| Pedals: | Marwi SP-700 | 
| Saddle: | Syncros Future Pro | 
| Spokes: | steel | 
| Weight: | 11200g | 
| Headset: | BGM FP-H807 | 1 1/8″ | 
| Shifter: | Shimano SL-RS36 | 
| Activity: | Cycling | 
| Cassette: | Sunrace MF-M300 | 
| Crankset: | Prowheel | 
| Groupset: | Shimano | 
| Material: | Aluminium | 
| Item code: | BGM630407 | 
| Seat post: | BGM Comp | 
| Brake type: | Rim Brake | 
| Frame type: | Hardtail | 
| Gear ratio: | 13-34 | 
| Handle bar: | BGM Comp Riser | 540mm | 
| Model year: | 2023 | 
| Wheel size: | 20" (406mm) | 
| Travel fork: | 40mm | 
| Dropper post: | no | 
| Manufacturer: | Bergamont Bikes | 
| Product name: | Bergamont Bergamonster 20 - 20" Kids Mountain Bike - 2023 - shiny metallic purple | 
| Cable routing: | external | 
| Weight source: | Manufacturer | 
| Bottom bracket: | BSA | 
| Brake actuation: | Mechanical | 
| Chainring ratio: | 36 | 
| Rear derailleur: | Shimano RD-TY300 | 
| Shifting system: | 7-speed | 
| Usage bikesport: | MTB | 
| Fork construction: | Classic Suspension Fork | 
| Manufacturer page: | https://www.bergamont.com | 
| Shifting actuation: | Mechanical | 
| Number of chainrings: | 1 | 
| Manufacturer item code: | 291122 | 
| Bike special accessories: | BGM Aluminium Kickstand |