How fast does a 150cc dirt bike go?

This 150cc dirt bike reaches approximately ~25 mph at full throttle. It includes an adjustable throttle governor so parents can limit the top speed for beginners.

What age is a 150cc 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.

1 6

MotoTec X4 150cc 4-Stroke Gas Dirt Bike

$1,599.00

~~$1,918.97~~ $1,599.00

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30-Day Warranty

Engine: 150cc 4-Stroke • Top Speed: 56 MPH • Transmission: 5-Speed Manual • Seat Height: 35 Inches • Max Rider: 220 lbs

The MotoTec X4 150cc is built for experienced riders who want serious trail performance. With a 150cc engine, 5-speed manual transmission, and full-size motorcycle geometry, the X4 handles everything from technical single-track to wide-open desert runs.

Who is it for? Experienced riders ages 15+ up to 200 lbs. This is not a beginner bike — it requires clutch skills and throttle discipline.

150cc 4-stroke engine — strong mid-range torque
5-speed manual transmission (1-N-2-3-4-5)
Wet multi-plate clutch
Inverted front forks with adjustable preload
Rear linkage suspension with adjustable shock
Front and rear hydraulic disc brakes
17" front / 14" rear wheels with aggressive knobby tires
Electric start + kick-start

Ships via freight.

💳 Pay in 4 interest-free installments with Shop Pay. No credit check required. Select Shop Pay at checkout.

📖 Buying Guides:
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🔗 Browse: All Gas Dirt Bikes

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

Engine	150cc 4-Stroke Single Cylinder Air Cooled
Transmission	Manual Wet Multi-Plate (1-N-2-3-4-5)
Engine Start	Electric Start & Kick Start
Top Speed	56 mph (with adjustable speed limiter)
Max Rider Weight	220 lbs
Seat Height	35 inches
Suspension	Inverted Hydraulic Adjustable Forks / Rear Shock
Brakes	Front Dual Piston / Rear Single Piston Disc
Tires	19 inch Front / 16 inch Rear
Dry Weight	231 lbs
Warranty	60 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

Warranty & Support

Includes a 30–60 day limited parts warranty covering manufacturer defects.
Replacement parts and support are available through DirtMotoBikes.

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