FIRSTNESS 36V Electric Dirt Bike Review: Who It Fits and Who Should Skip It

What stands out

• 250W motor with 10% climbing capacity
• Up to 90 minutes of riding time
• Three speed settings: 5.0, 7.5, and 15.5 mph
• Automatic power-off function for safety
• 12-inch inflatable rubber tires for grip

Who it fits

Key specs explained for this bike

Motor Power: 250W

This wattage indicates the motor's rotational force. A 250W unit provides enough torque for children to climb gentle slopes, listed as a 10% capacity. It balances power delivery to prevent jerky starts. You should compare this to smaller 12V or 24V models. Higher wattage generally means better performance on uneven grass or dirt paths. It ensures the bike does not stall when encountering minor resistance or slight inclines.

Voltage: 36V

Voltage represents the electrical pressure driving the motor. A 36V system is more powerful than standard 12V or 24V ride-on cars. It delivers consistent energy to the motor throughout the ride. This higher voltage supports the 250W output and helps maintain speed on hills. When shopping, you will see this as a mid-tier option. It offers a good balance between raw power and manageable speed for young riders aged five to ten.

Battery Capacity: 5.2Ah

Amp-hours measure how much energy the battery stores. A 5.2Ah pack allows for up to 90 minutes of continuous riding. It also supports a maximum range of ten miles. This capacity is larger than many entry-level models. You should compare it to smaller 2Ah or 3Ah batteries. A higher capacity means fewer charging interruptions. It ensures the bike runs at full power until the battery is nearly depleted, rather than slowing down early.

Max Speed: 15.5 mph

This is the top velocity the bike can reach. It offers three distinct modes, starting at 5.0 mph for beginners. The highest setting allows for faster off-road exploration. This speed is suitable for supervised outdoor use. You should compare it to slower 6 mph models. The 15.5 mph limit provides excitement without excessive risk. It allows children to build confidence on larger tracks or paved paths before tackling more challenging terrain.

Design and build details

The listing describes a sturdy frame built for outdoor use. It measures 43.7 by 24.4 by 26.8 inches. The unit weighs 39 pounds. This weight allows you to move it easily for storage or transport. It supports a maximum rider weight of 133 pounds. The structure is designed to handle off-road terrain while remaining portable for family trips.

You will find 12-inch inflatable rubber tires on this model. These tires provide exceptional grip and adapt to multiple road conditions. The bike includes an advanced suspension system to ensure a smooth ride on various surfaces. Drum brakes are fitted for stopping power. An automatic power-off function adds a layer of safety during operation.

The layout features three speed modes, starting at 5.0 mph. This allows beginners to build confidence before switching to higher speeds. The handlebars and controls are positioned for easy access. The listing notes a blue color option, with other variations available in green, red, or blue and green. The finish is intended to withstand outdoor elements. You should consider these dimensions and weight limits to ensure the bike fits your storage space and supports your child's size according to the listing.

Setup and everyday use

The listing does not detail a complex assembly process. You receive a unit that measures 43.7 by 24.4 by 26.8 inches. It weighs 39 pounds, making it manageable for you to move for storage or transport. The primary setup task involves charging the 36V 5.2Ah battery. You must allow five to six hours for a full charge before first use. This charging time is a fixed requirement for daily operation.

Once charged, you operate the bike using its three speed modes. The settings are 5.0 mph, 7.5 mph, and 15.5 mph. You start with the lowest speed to build confidence. You can switch to higher speeds as riding skills improve. This flexible control allows you to supervise young riders easily. The automatic power-off function adds a layer of safety during operation.

Daily use involves navigating various terrains. The 12-inch inflatable rubber tires provide grip on different surfaces. The advanced suspension system ensures a smooth ride over bumps or uneven ground. You can expect up to 90 minutes of riding time per charge. The maximum range is 10 miles. The 250W motor delivers balanced power, helping you conquer slopes with a 10% climbing capacity. The drum brakes stop the bike when needed. You can choose from Blue, Blue & Green, Green, or Red options. The machine supports riders up to 133 pounds. It is designed for ages 5 to 10.

Before You Buy This Bike

Before adding this FIRSTNESS bike to your collection, check a few practical details. You need a standard 120V outlet for charging. The battery takes five to six hours to fully charge. Keep this in mind if you plan to ride daily. You should also verify your garage or storage space. The unit measures 43.7 by 24.4 by 26.8 inches. It weighs 39 pounds, which is manageable but not tiny. Ensure your child fits within the 133-pound limit. This bike suits active kids who want off-road capability. It differs from standard ride-on cars by its dirt bike design. It also differs from larger ATVs by its smaller size and lower speed. If you already have a slow car, this offers a faster, more rugged option. If you have a large ATV, this is a smaller, easier-to-handle alternative. Check tire pressure for the 12-inch inflatable tires. Proper inflation ensures the grip needed for the 10% climbing capacity.

Check before you buy

• Ensure you have a standard 120V outlet nearby for charging.
• Verify your storage space fits the 43.7-inch length.
• Confirm the rider weighs less than 133 pounds.
• Check that your child can reach the controls safely.

The product at a glance

1

FIRSTNESS 36V Electric Dirt Bike

Best for: Beginners needing long ride times and gradual speed control

Voltage

36V

Motor Power

250W

Battery Capacity

5.2Ah

Max Speed

15.5 MPH

Age Range

5-10

Features

Spring Suspension

View on Amazon: FIRSTNESS 36V Electric Dirt Bike Affiliate link

The FIRSTNESS 36V Electric Dirt Bike targets kids aged 5 to 10 with a 250W motor and a 36V 5.2Ah battery. It offers up to 90 minutes of riding time and a top speed of 15.5 mph across three settings. The bike features 12-inch inflatable tires and an advanced suspension system for varied terrain. Its lightweight 39 lb build supports up to 133 lbs, making it suitable for younger riders exploring outdoor paths.

Pros

• 36V 5.2Ah battery provides up to 90 minutes of ride time
• Three speed modes allow gradual skill building from 5.0 to 15.5 mph
• 12-inch inflatable rubber tires offer grip on multiple road conditions
• Advanced suspension ensures a smooth ride on uneven terrain

Cons

• 5 to 6 hour charging time is slower than many competitors
• Maximum weight capacity of 133 lbs limits use for older or heavier kids
• Uses drum brakes instead of more responsive disc brakes

Good fit if

• You want a bike with long battery life for extended play sessions
• You need adjustable speeds to help a beginner build confidence
• You prefer inflatable tires for better traction on soft ground

Skip if

• You need a vehicle for riders over 133 lbs
• You require quick charging between rides
• You prefer disc brakes for sharper stopping power

Verdict: FIRSTNESS 36V Electric Dirt Bike fits beginners who need gradual speed increases and long ride times. It suits younger kids who value comfort and grip over raw power or fast charging.

Specifications side by side

Frequently asked questions

See also

• firstness 36v electric dirt bike alternatives
• firstness 36v electric dirt bike vs 2 seater ride on car
• firstness 36v electric dirt bike review
• firstness 36v electric dirt bike alternatives