How fast does a 50cc dirt bike go?

This 50cc dirt bike reaches approximately ~20-22 mph at full throttle. It includes an adjustable throttle governor so parents can limit the top speed for beginners.

What age is a 50cc dirt bike for?

This bike is designed for kids ages 6-12, with a maximum rider weight of 100-130 lbs depending on the model. The rider should be able to touch the ground with both feet.

What fuel does this dirt bike use?

This 2-stroke engine runs on premix gasoline and 2-stroke oil at a 50:1 ratio. Use regular unleaded gas mixed with quality 2-stroke oil.

How do you start this dirt bike?

It uses a pull-start mechanism. Pull the starter cord firmly to start the engine. A kill switch on the handlebars shuts it off instantly.

Does this dirt bike have a speed governor?

Yes. The throttle governor is adjustable so parents can limit the maximum speed. Start restricted and gradually open it up as your child gains confidence.

How long can my kid ride on one tank of gas?

A full tank provides 1-2 hours of riding depending on throttle use and terrain. Refuel with premix and keep riding — no charging wait time.

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MotoTec Big Alien 50cc 2-Stroke Kids Gas Dirt Bike

$359.00 ~~$466.97~~

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MotoTec Big Alien 50cc 2-Stroke Kids Gas Dirt Bike

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30-Day Warranty

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Arrives 85%–90% Pre-Assembled — Ready to Ride in 20–30 Mins

Factory-tested, professionally crated, and simple to finish at home with basic tools.

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1. Arrives 85%–90% Pre-Assembled Factory-tested and securely crated. Powertrain, frame, rear wheel, brakes, and wiring are already installed.

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2. Simple 20–30 Min Final Setup Just attach the handlebars, front wheel, and number plate/pedals, check tire pressure, and top off the battery charge.

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3. Everything Included in the Box Includes factory charger (electric models), basic assembly tool kit, owner's manual, and free U.S. tech support via text/call at (978) 219-9647.

Up to 25 mph • Max Rider: 130 lbs • Seat Height: 22 in • Tank: 1 L • Fuel/Oil: 25:1 • Brakes: Front/Rear Disc • Tires: 14 in • Age: 13+

Ignite the spark of adventure in your young rider with the MotoTec Big Alien 50cc 2-Stroke Kids Gas Dirt Bike! Picture the pure joy as they twist the throttle for the first time, feeling the raw, exhilarating energy of a true gas-powered machine under them. This isn't just another toy; it's their gateway to mastering trails, kicking up dirt, and experiencing the untamed thrill of off-road exploration. Crafted for that crucial next step in their riding journey, the Big Alien offers an authentic taste of motocross excitement, designed to build confidence and create unforgettable memories on every ride.

At Dirt Moto Bikes, we understand the thrill-seeker's spirit, and we've hand-picked the Big Alien for its robust design and spirited performance, giving your child a powerful yet controllable introduction to the dirt world. Engineered with real suspension and reliable disc brakes, it’s built to withstand youthful enthusiasm while offering the peace of mind parents crave. When you choose Dirt Moto Bikes, you’re not just getting a premium machine; you're gaining a partner passionate about powersports, ensuring your future champion gets the best gear to kickstart their lifelong love affair with the dirt.

The MotoTec Big Alien 50cc 2-stroke kids gas dirt bike is a fast, fully automatic starter dirt bike with real suspension and disc brakes. With a 25 mph top speed and durable steel frame, it’s built for older kids who want a true off-road riding experience. Just pull start and twist the throttle to ride.

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Frequently Asked Questions about MotoTec Big Alien 50cc 2-Stroke Kids Gas Dirt Bike

Who is this vehicle recommended for, and what is the top speed?

This model is engineered for 10-16 years and reaches a top speed of approximately 30 mph, depending on rider weight and terrain. Built-in speed selector switches allow supervised control for newer riders.

How does shipping work, and does it arrive fully assembled?

Dirt Moto Bikes provides free insured U.S. freight shipping. Vehicles ship factory-direct in a protective steel/cardboard crate and arrive approximately 85% to 90% pre-assembled. Final assembly typically involves attaching the handlebars, front wheel, and performing a routine bolt check. Professional assembly service is also available at checkout.

What kind of maintenance is required for this model?

This gas-powered model requires standard 2-stroke or 4-stroke engine maintenance, including regular oil checks/changes, air filter cleaning, chain tension adjustments, and checking brake disc alignment before heavy trail use.

Is a factory warranty included with your vehicles?

Yes! As an authorized dealer, Dirt Moto Bikes includes full manufacturer warranty coverage supporting replacement parts and technical troubleshooting.

Why Buy From DirtMotoBikes?

✓ Authorized MotoTec Dealer
✓ Free U.S. Shipping (Lower 48)
✓ Fast U.S. Fulfillment (CA & WI)
✓ 30–60 Day Parts Warranty
✓ Secure Checkout
✓ Replacement Parts Available
✓ Expert Support

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
Transmission	Auto Centrifugal
Recommended Age	13+
Max Rider Weight	130 lbs
Front & Rear Tires	14 inch
Brakes	Front & Rear Disc
Suspension	Front Fork and Rear Mono Shock
Throttle	Variable twist-grip
Seat	Padded (single rider)
Handlebars	Angle Adjustable, Not Height
Seat Height (from ground)	22 inches
Dirt Bike Dimensions	42 x 27 x 28 inches
Dirt Bike Dry Weight	48 lbs
Box Size	46 x 14 x 26 inches
Box Weight	53 lbs
Warranty	30 days parts replacement

Shipping & Delivery

• Ships from U.S. warehouses
• Most orders deliver in 3–7 business days
• Larger items may ship by freight with appointment scheduling
• Tracking provided for all orders