MotoTec Big Supermoto 50cc 2-Stroke Kids Dirt Bike
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Visit CalculatorThe MotoTec Big Supermoto DB-02 is a gas-powered, entry-level dirt bike built for young riders who are ready to step up to real off-road fun. Its 50cc 2-stroke engine delivers snappy acceleration and strong torque, while the fully automatic transmission keeps riding simple—just twist the throttle and go. A tough steel frame, real rubber knobby tires, and rear disc brake make it a confident starter bike for backyard tracks and beginner trails in both wet and dry conditions.
Fast, torquey power for beginners – The latest-gen 50cc 2-stroke motor feels lively and responsive, giving kids a real dirt-bike experience without needing a full-size machine.
Simple starts with minimal fuss – Pull-start ignition with an improved carburetor helps the bike fire up quickly and reliably for new riders.
Twist-and-go riding – The auto centrifugal transmission removes shifting, letting kids focus on balance, throttle control, and braking.
Built to take beginner terrain – A sturdy steel frame and larger knobby rubber tires improve traction and durability on dirt, grass, and light trails.
Stronger stopping power – Rear disc braking delivers more consistent control than basic band brakes, helping young riders stop safely.
Big-bike look, kid-friendly size – Motocross-style plastics and a compact stance give it a full-size supermoto attitude in a youth-friendly package.


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| Category | Specifications |
| Motor | 50cc 2-Stroke, Air Cooled (EPA Approved) |
| Gas/Oil Mixture | Unleaded 25:1 ratio |
| Engine Start | Pull Start |
| Gas Tank | 1 Liter |
| Top Speed | 25 mph |
| Cruising Range | 10+ miles per tank |
| Max Rider Weight | 120 lbs |
| Transmission | Auto Centrifugal |
| Recommended Age | 13+ |
| Max Rider Weight | 150 lbs |
| Front Tires | 13x4.10-6 |
| Rear Tires | 13x4.10-6 |
| Brakes | Rear Disc |
| Suspension | Ridged Frame |
| Chain | 25H 79 link (158 pins) |
| Wheelbase | 60 inches |
| Throttle | Variable twist-grip |
| Seat | Padded (single rider) |
| Handlebars | Angle Adjustable, Not Height |
| Seat Height from Ground | 21 inches |
| Box Size | 35x13x22 inches |
| Box Weight | 44 lbs |
| Dirt Bike Dimensions | 38x22x27 inches |
| Dirt Bike Dry Weight | 37 lbs |
| Warranty | 30 days parts replacement |
Is this bike street legal?
No. The DB-02 is made for off-road/competition use only and is not intended for public roads.
Do kids need to shift gears?
No shifting required. The automatic centrifugal transmission engages as the rider twists the throttle.
What fuel does it take?
Use unleaded gasoline mixed with 2-stroke oil at a 25:1 ratio. Always pre-mix before filling the tank.
How fast does it go?
Top speed is listed at about 25 mph, depending on rider weight and terrain.
What age is this best for?
MotoTec recommends this model for riders 13 and older, with adult supervision for all minors.
Can it be used in California?
This bike is sold as “Competition Use Only” in California. It cannot be registered for OHV or DMV green/red stickers, must be ridden on closed courses, and does not meet California emissions standards.
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