Choosing a gas dirt bike for off-road riding usually comes down to two questions: how much do you want to spend, and which engine size matches the rider. The four listings here cover a range of price points, and they do not all lean the same way. All four are listed as new, and the descriptions point to young riders or lighter adults.
Quick take
The MotoTec is the small two-stroke listing. The X-PRO Falcon is the model with the largest engine here. The Motocross Moto Dirt Bike is the MPR Bikes entry, and the 50cc 4-Stroke Kids Gas Dirt Bike is the red kids option.
Listed price comparison
| Product | Listed price | Price bar |
|---|---|---|
| MotoTec Gas Dirt Bike for Kids & Teens | USD 263.00 | |
| X-PRO Falcon 105cc 4-Stroke Mini Dirt Bike for Kids | USD 299.00 | |
| 50cc 4-Stroke Kids Gas Dirt Bike Red Colors | USD 358.97 | |
| Motocross Moto Dirt Bike | USD 399.00 |
The listed prices span $136 from the lowest to the highest. The two cheapest listings are the only ones below $300, while the top two sit between $358 and $399.
Decision matrix
| If you want... | This model... |
|---|---|
| The lowest listed price | MotoTec Gas Dirt Bike |
| A 105cc four-stroke engine with 6-inch wheels | X-PRO Falcon 105cc |
| Front and rear suspension, adjustable shock, no oil mixing | Motocross Moto Dirt Bike |
| A four-stroke with off-road tires and a soft seat cushion | 50cc 4-Stroke Kids Gas Dirt Bike |
Product notes
MotoTec Gas Dirt Bike for Kids & Teens

The MotoTec is the lowest-priced listing at $263. It uses a 44cc two-stroke air-cooled engine with a pull starter, automatic centrifugal clutch, and a top speed listed around 25 mph. The description includes a 14+ age recommendation, a 220-pound maximum rider weight, front telescopic forks, a rear mono shock, and front and rear disc brakes. Because it is a two-stroke, it needs a 25:1 fuel-and-oil mix, which adds a step at the gas can. The listed 22-inch seat height also makes it a candidate for a smaller rider who is ready for a gas-powered mini bike.
X-PRO Falcon 105cc 4-Stroke Mini Dirt Bike for Kids

At $299, the X-PRO Falcon gives you the largest displacement in this group: a 105cc four-stroke engine. The title calls out 6-inch wheels, and the listing states an 185-pound weight support. The model is not legal for sale in California, so California shoppers would need one of the other options. Outside that restriction, this is the only bike in the comparison with a three-digit engine size, which can make it a stronger pick when a 44cc or 40cc bike feels too small for the rider. It is also the only one here that pairs a 105cc engine with a price below $300.
Motocross Moto Dirt Bike

The most expensive listing at $399 is this MPR Bikes motocross model. It uses a 40cc four-stroke engine with an automatic centrifugal transmission, easy pull starter, and a quoted top speed up to 25 mph. The feature set includes front and rear suspension, an adjustable shock absorber, cross-drilled disc brakes, and pneumatic knobby all-terrain tires. The description says it runs on 87+ gasoline without oil mixing. Its listed dimensions are 50.0 x 22.5 x 30.0 inches and its dry weight is 47 lbs. The trade-off is engine size: 40cc is the smallest displacement here, so lighter or younger riders are the more natural fit.
50cc 4-Stroke Kids Gas Dirt Bike

At $358.97, this red four-stroke kids bike is the second most expensive listing. Its listed features are off-road tires, shock absorption springs, and a soft seat cushion, with a hand-pull ignition and a 1.8L fuel tank. If you compare it directly with the X-PRO Falcon, the X-PRO is listed at $299 and has a 105cc engine, while this bike has a smaller four-stroke engine. That makes the red model the higher-priced option for less displacement in this set. The red color and cushioned seat may be the deciding points, but the price-to-engine-size relationship is worth weighing before choosing this one.
Final recommendation by use case
If your first filter is price, the MotoTec is the place to start. If the engine size is your first filter, choose the X-PRO Falcon. If you want the MPR Bikes model, choose the Motocross Moto Dirt Bike. If you want the remaining kids bike, choose the 50cc 4-Stroke Kids Gas Dirt Bike.