6 Best Low Cost Dirt Bike Options for Beginners and Riders on a Budget

By Lauren Holland

Updated November 2026

Shopping for a low cost dirt bike usually comes down to a trade-off between engine size, build quality, safety features and how well the bike fits the rider. A bike that is too powerful for a new rider is a problem, and so is a frame that is too small or a brake system that feels weak on a steep descent. This list compares six budget-minded models from ASIN listings that cover a range of engine sizes and rider ages. We looked at published specifications such as engine displacement, top speed, rider weight and age range, the presence of disc brakes and suspension, and the general reputation of each brand based on owner feedback patterns. We did not ride or test these machines ourselves, so treat the specs as manufacturer claims and confirm them on the listing before you buy.

Our Top Picks

Quick Comparison

50cc Dirt Bike with Front Rear Disc Brakes, 10In Off-Road Tires, Kids Dirt Bike for 8-14

50cc Dirt Bike with Front Rear Disc Brakes,10In Off-Road Tires,Shock Absorption,Seat Height 23.6in,Max Speed 40Mph Kids Dirt Bike for 8-14,2-Stroke Gas dirt Bike,Black,CPC Listed

View on Amazon

Best for: Kids aged 8 to 14 who need strong braking and a bike that feels stable on trails.

This 50cc model is aimed at children who have moved past a small pedal or electric bike and are ready for a true gas-powered machine. The disc brakes on both wheels are the main selling point, since they give a young rider more consistent stopping power than drum brakes.

Key specs

• Engine: 50cc 2-stroke gas
• Front and rear disc brakes
• 10-inch off-road tires
• Seat height listed at 23.6 inches
• Max speed listed at 40 mph
• CPC listed

Pros

• Disc brakes on both wheels
• Shock absorption for rough ground
• Seat height suits many 8 to 14 year olds

Cons

• A 40 mph top speed is fast for a first-time rider, so supervision matters
• 2-stroke engines require careful pre-ride checks and fuel mixing

Bottom line: A strong choice for a kid who already has some riding experience and needs a bike that will grow with them through the early teen years.

View on Amazon

EPA approved 40cc 4-Stroke Dirt Bike (Blue), Knobby Tires, Max 25 MPH

EPA approved, 40cc 4 Stroke Engine,No Oil Mixed Needed, Disc Brakes, Knobby Tires, Max 25 MPH Gas Dirt Dikes for Kids 8-14, 4-Stroke Dirt Bike (Blue)

View on Amazon

Best for: Young beginners who want a 4-stroke engine without mixing oil and gas.

Riders who are just learning often do best with a bike that is simple to start and maintain. The 4-stroke design avoids premixing, which removes one common mistake from pre-ride routines. The 25 mph top speed is a sensible ceiling for a child who is still building throttle control.

Key specs

• Engine: 40cc 4-stroke
• No oil mixing needed
• Disc brakes
• Knobby tires
• Max speed listed at 25 mph
• EPA approved

Pros

• No premix required
• Lower top speed suits beginners
• Knobby tires give better traction on loose dirt

Cons

• A 4-stroke engine in this class is typically heavier than a comparable 2-stroke
• Fewer teens will find it powerful enough for aggressive trail riding

Bottom line: Good for a younger child stepping up from a smaller bike, especially for a parent who wants low-maintenance ownership.

View on Amazon

FX40 Gas Dirt Bike For Teens 40cc 4-Stroke, EPA-Approved, Up To 20 Mph

EPA-Approved Engine, Up To 20 Mph, Ages 13+, Up To 132 Lbs, Front & Rear Suspension, Key Ignition,Red FX40 Gas Dirt Bike For Teens 40cc 4-Stroke Dual Disc Brake Off Road

View on Amazon

Best for: Teens aged 13 and up who want front and rear suspension and a key ignition.

Teen riders often outgrow kid-sized bikes quickly but are not ready for a full adult machine. This model sits in that middle ground, with a 20 mph top speed and a rider weight rating up to 132 pounds, according to the listing.

Key specs

• Engine: 40cc 4-stroke
• Front and rear suspension
• Dual disc brakes
• Key ignition
• Max speed listed at 20 mph
• Rider weight rating up to 132 pounds

Pros

• Suspension at both ends
• Key ignition adds a layer of security
• Conservative top speed for a first teen bike

Cons

• The 132-pound limit rules out heavier or taller teens
• The 20 mph ceiling may feel slow to a rider who has already ridden larger bikes

Bottom line: A sensible choice for a younger teen who is ready for suspension and a bit more structure, as long as their weight falls within the stated limit.

View on Amazon

X-PRO Lynx 125cc Dirt Bike, Gas Powered 4-Stroke Off-Road Pit Bike

X-PRO Lynx 125cc Dirt Bike, Gas Powered 4-Stroke Off-Road Pit Bike with Zongshen Engine, 4-Speed Manual Clutch, Kick Start, 14"/12" Tires, Hydraulic Disc Brakes, Cradle Steel Frame (Black)

View on Amazon

Best for: Experienced riders who want more power and a manual clutch.

A 125cc pit bike is a step up in both performance and responsibility. This model uses a manual clutch and kick start, which many riders prefer for learning proper gear control. It is not a beginner machine, and a rider should be comfortable with clutch and throttle coordination before taking it on open trails.

Key specs

• Engine: 125cc 4-stroke, Zongshen-built
• 4-speed manual clutch
• Kick start
• 14-inch front and 12-inch rear tires
• Hydraulic disc brakes
• Steel cradle frame

Pros

• Manual clutch builds real riding skill
• Hydraulic disc brakes offer good stopping feel
• Steel cradle frame is a sturdy design

Cons

• Not suitable for young or inexperienced riders
• Kick start can be tiring on a cold engine

Bottom line: The right pick for an adult or strong teen who has already learned clutch control and wants a capable trail or pit bike.

View on Amazon

50cc Dirt Bike with Upgrade Carburetor, 25mph, Dual Disc Brakes, 2-Stroke Gas Kids Dirt Bike

dirt bike 25mph speed, 2.5-10" off road tires, dual disc brakes and front/rear suspension.Upgrade carburetor & filter 50cc Dirt Bike for Kids 5-13, 2-Stroke Gas Kids Dirt Bike

View on Amazon

Best for: Budget-minded parents buying a first gas bike for kids aged 5 to 13.

This model is listed with a 25 mph top speed, which is lower than many 50cc bikes, making it a reasonable choice for younger riders. The listing also mentions a carburetor and air filter upgrade, which some owners consider a worthwhile tune-up when starting out.

Key specs

• Engine: 50cc 2-stroke gas
• Max speed listed at 25 mph
• Dual disc brakes
• Front and rear suspension
• Off-road tires from 2.5 to 10 inches

Pros

• Lower top speed than many 50cc bikes
• Dual disc brakes and suspension
• Wide age range listed, 5 to 13

Cons

• 2-stroke engines need fuel mixing and regular maintenance
• The tire size range in the listing is unusual, so confirm the wheel size for your child

Bottom line: A practical starter gas bike for a child moving up from electric or a smaller engine, provided you are ready to do basic 2-stroke upkeep.

View on Amazon

MOSTA Kids Dirt Bike Gas, 40cc 4-Stroke Dirt Bike, Max 20 MPH

Mini Dirt Bike with Shock Absorption & Disc Brake, Max 20 MPH, Off-Road Tires, No Mix Oil Require, EPA Approved, For 6-14, MOSTA Kids Dirt Bike Gas, 40cc 4-Stroke Dirt Bike

View on Amazon

Best for: The youngest riders, roughly ages 6 to 14, who need the gentlest throttle response.

A 20 mph limit and a 4-stroke engine make this bike suitable for children who are only beginning to learn throttle control. The no-mix requirement keeps routine maintenance simple for a parent who wants to avoid fuel-mixing errors.

Key specs

• Engine: 40cc 4-stroke
• No oil mixing required
• Max speed listed at 20 mph
• Shock absorption and disc brake
• Off-road tires
• EPA approved

Pros

• Low top speed suits first-time riders
• No premix needed
• Shock absorption helps on uneven ground

Cons

• Single disc brake, compared with dual on some competing models
• Likely too small and slow for a teen or adult

Bottom line: A good first gas bike for a young child who needs a slow, forgiving machine to build confidence.

View on Amazon

Buying Guide

Engine size and rider age

Engine displacement is the most important number to match to your rider. Many manufacturers group bikes into rough age bands: 40cc and 50cc models for younger children, 70cc to 110cc for older kids, and 125cc and up for teens and adults. Check the manufacturer’s rider age and weight limits rather than relying on engine size alone, since a 40cc bike with a 20 mph limit can be a better match for a 6-year-old than a 50cc bike with a 40 mph top speed.

Good picks for this: MOSTA Kids Dirt Bike Gas, 40cc 4-Stroke; 50cc Dirt Bike with Front Rear Disc Brakes

Two-stroke versus four-stroke engines

Two-stroke engines are lighter and often quicker to rev, but they need oil mixed into the fuel and generally require more frequent maintenance. Four-stroke engines use a separate oil reservoir, which removes premixing but usually adds weight. For a first-time owner, many people prefer a 4-stroke because routine care is simpler.

Good picks for this: EPA approved 40cc 4-Stroke Dirt Bike (Blue); FX40 Gas Dirt Bike For Teens 40cc 4-Stroke

Brakes and stopping power

Disc brakes generally give more consistent stopping performance than drum brakes, especially on wet or steep terrain. Look for front and rear disc brakes if the bike will be used on hills or in mixed conditions. Hydraulic systems offer a firmer lever feel than cable-actuated ones, which can matter for a rider who is still developing hand strength.

Good picks for this: 50cc Dirt Bike with Front Rear Disc Brakes; X-PRO Lynx 125cc Dirt Bike

Suspension and ride comfort

Front and rear suspension absorbs bumps and helps the rider keep control over roots, ruts and jumps. Shock absorption on a small bike does not need to be elaborate, but a bike with no suspension at all will feel harsh on trails. Check whether the listing specifies front, rear or both.

Good picks for this: FX40 Gas Dirt Bike For Teens 40cc 4-Stroke; 50cc 2-Stroke Gas Kids Dirt Bike

Seat height and fit

A rider should be able to sit on the seat with both feet reaching the ground or nearly so. Manufacturers often list seat height in inches; a common reference for kids is roughly 23 to 25 inches for smaller models. Check the rider’s inseam against the listed seat height before buying, and remember that a bike that is slightly too tall is harder to control at a stop.

Good picks for this: 50cc Dirt Bike with Front Rear Disc Brakes; MOSTA Kids Dirt Bike Gas, 40cc 4-Stroke

Tires and terrain

Knobby tires provide more grip on loose dirt, sand and mud, while smoother tread may roll more easily on hard-packed surfaces. Tire size also affects ground clearance and handling. Smaller wheels, such as 10-inch fronts, suit small riders and low speeds, while larger wheels improve stability at higher speeds.

Good picks for this: EPA approved 40cc 4-Stroke Dirt Bike (Blue); X-PRO Lynx 125cc Dirt Bike

Maintenance and long-term care

Even a budget bike needs regular attention. Check air filters, chain tension, brake pads, tire pressure and fluid levels before each ride. Two-stroke engines need correct fuel-oil ratios; four-stroke engines need oil changes at the interval in the owner’s manual. Keeping a simple log of maintenance tasks helps prevent small issues from becoming expensive repairs.

Good picks for this: EPA approved 40cc 4-Stroke Dirt Bike (Blue); 50cc 2-Stroke Gas Kids Dirt Bike

FAQ

Is a low cost dirt bike safe for a beginner?

A lower-powered bike with disc brakes and a conservative top speed is generally a better starting point than a high-displacement machine. Safety depends heavily on protective gear, supervision and training. Helmets, goggles, boots, gloves and chest protection should be worn on every ride.

What age is a 50cc dirt bike suitable for?

Most 50cc bikes are listed for children roughly 8 to 14, though exact ranges vary by model. Always check the manufacturer’s rider age and weight limits before buying.

Do 4-stroke dirt bikes need oil mixed into the gas?

No. A 4-stroke engine has a separate oil system and does not require premixing. Check the oil level regularly and change it at the interval in the owner’s manual.

How fast do kids’ dirt bikes go?

Listed top speeds in this class range from about 20 mph to 40 mph. Manufacturers often list maximum speeds, but actual speed depends on terrain, rider weight and maintenance.

Are disc brakes better than drum brakes on a small dirt bike?

Disc brakes usually offer more consistent stopping power, particularly when wet or on steep ground. They are a useful feature for any bike used on varied terrain.

Should I buy a used low cost dirt bike?

A used bike can save money, but inspect the frame, forks, engine compression and brakes carefully. Ask for maintenance records if available. A mechanic’s inspection is worth the cost before a purchase.

When should a rider move up to a larger engine?

Move up when the rider has mastered throttle control, braking and cornering at the current bike’s speed and no longer feels in full command. Rider size and weight limits in the manual also matter.

Conclusion

For most buyers, the right low cost dirt bike comes down to matching engine size, brake type and top speed to the rider’s age, size and experience. The 50cc Dirt Bike with Front Rear Disc Brakes offers a good balance for kids with some riding background. The EPA approved 40cc 4-Stroke Dirt Bike suits beginners who want simple maintenance. The FX40 Gas Dirt Bike For Teens fits younger teens who need suspension. The X-PRO Lynx 125cc is for experienced riders ready for a manual clutch, and the 50cc 2-Stroke Gas Kids Dirt Bike and MOSTA 40cc 4-Stroke are sensible options for the youngest riders. Always verify the listing specifications and rider limits before purchase, and consult a professional mechanic or dealer for a pre-ride inspection.

Sources

• Consumer safety guidance on youth off-highway vehicles and recommended rider protection (cpsc.gov)
• Emissions standards and EPA certification information for small off-road engines (epa.gov)
• Rider training and safety resources for motorcycles and off-road riding

Related reading

• Top 7 Moto Dirt Bike 50cc for Kids Compared (2026)
• Rzr Electric Dirt Bike (2026): Which Should You Choose?
• Is the Honda CRF125F Dirt Bike Good for Beginners? Specs and Buying Tips
• Is a Road Legal Dirt Bike Possible? What It Takes to Register One

About Lauren Holland

Lauren Holland is part of our editorial team and reviews and edits our ATV, UTV/side-by-side & dirt bikes guides, checking product details against manufacturer specifications and owner feedback.