MotoTec Demon 40cc 4-Stroke Kids Gas Dirt Bike
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Visit CalculatorThe MotoTec Demon 40cc 4-Stroke Kids Dirt Bike is the ultimate starter bike for young riders. With a reliable 40cc 4-stroke engine, easy pull start, and improved carburetor, this bike offers excellent power and performance while being more fuel-efficient and easier to maintain than 2-stroke models.
Built with a chromoly steel frame, responsive acceleration, front telescopic forks, rear mono shock suspension, and disc brakes, the Demon 40cc ensures a smooth, safe, and fun riding experience. Designed for both wet and dry conditions, this bike can handle a variety of terrains, making it perfect for adventurous kids.
Durable 4-Stroke Engine - Reliable 40cc motor with 1.6Nm torque and easy pull start for consistent performance.
Adjustable Speed Limiter - Top speed up to 22 mph, with parental control for safer riding.
High-Quality Suspension - Front inverted fork (70mm travel) and rear mono shock (60mm travel) for smooth rides on rough terrain.
Strong Steel Frame - Chromoly steel construction provides durability and stability.
Disc Brakes - Front and rear disc brakes for strong stopping power.


Everything you need is included with your product.
| Category | Specifications |
| Motor | 40cc 4-Stroke, Air Cooled |
| Rated Output | 1.9hp @ 6500 rpm |
| Torque | 1.6Nm @ 5000 rpm |
| Engine Start | Pull Start |
| Gas Tank | 1.2 Liter |
| Top Speed | 22 mph (adjustable speed limiter) |
| Cruising Range | 20+ miles per tank |
| Safety | Throttle Limiter |
| Transmission | Auto Centrifugal |
| Chain | T8F 68 Link |
| Carburetor | 2629 |
| Recommended Age | 13+ |
| Max Rider Weight | 165 lbs |
| Seat Height | 23 inches |
| Handlebar Height | 30 inches |
| Frame | Steel |
| Front & Rear Wheels | Aluminum Alloy |
| Front & Rear Tires | 2.50-10 (15 inch diameter, 2.5 inch wide) |
| Brakes | Front Disc, Rear Disc |
| Suspension | Front Inverted Fork Travel 70mm & Rear Mono Shock Travel 60mm |
| Throttle | Variable twist-grip |
| Seat | Padded (single rider) |
| Handlebars | Angle Adjustable, Not Height |
| Seat Height from Ground | 23 inches |
| Wheelbase | 35 inches (89cm) |
| Ground Clearance | 5.3 inches |
| Assembly Required | Yes |
| Box Size | 44x13x24 inches |
| Box Weight | 63 lbs |
| Dirt Bike Dimensions | 51x30x23 inches |
| Dirt Bike Dry Weight | 51 lbs |
| Warranty | 30 days parts replacement |
What is the maximum speed?
The bike can reach up to 22 mph, but a speed limiter allows parents to control the max speed.
What type of engine does it use?
It features a 40cc 4-stroke air-cooled engine, known for reliability and easy maintenance.
How long does it run per tank?
The bike runs for 20+ miles per tank (depending on rider weight and terrain).
Is assembly required?
Yes, some assembly is required, but most major components come pre-installed.
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