BOOM 250cc 6 Speed EFI Fuel Injection Dirt Bike Motorcycle (BLACK) – In-Depth Review

Motorcycles have always been a symbol of adventure, freedom, and adrenaline. For riders who enjoy both street performance and off-road adventures, choosing the right bike is more than just picking a machine with two wheels—it’s about finding the perfect balance between power, reliability, comfort, and affordability.

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One motorcycle that has been gaining attention recently is the BOOM 250cc 6 Speed EFI Fuel Injection Dirt Bike Motorcycle (BLACK), available on Amazon through the brand KUNHAO. With a rating of 3.8 out of 5 stars from customers, this bike sits somewhere between budget-friendly entry-level machines and more advanced dirt or street motorcycles.

In this blog, we’ll take a deep dive into every detail of this motorcycle—its specifications, design, features, performance, pros, cons, customer feedback, and who this bike is truly made for. By the end, you’ll have a full picture of whether the BOOM 250cc should be your next two-wheeled companion.

First Impressions

At first glance, the BOOM 250cc Dirt Bike has a rugged, aggressive look that appeals to riders who want both style and substance. The black color variant—priced at around $2,961.82 (or as low as $117.22/month with financing)—adds a stealthy, muscular aesthetic that blends well for both city rides and outdoor trails.

Unlike some dirt bikes that look minimalistic, this bike has a more “street bike” vibe with its larger frame, disc brakes on both wheels, and 17-inch front and rear tires. This dual-purpose design makes it suitable for people who want one bike that can handle both paved roads and rougher, off-road paths.

The bike ships 95% assembled, which means buyers don’t need to worry about complicated setups. Only the battery and rearview mirrors need to be connected before riding. However, as noted in the listing, the Manufacturer Statement of Origin (MSO) and Bill of Sale paperwork arrive separately, so you’ll want to keep that in mind for registration purposes. View current offers

Engine and Performance

One of the standout aspects of the BOOM 250cc is its engine setup. Officially, it is marketed as a 250cc class bike, but the engine displacement is 223cc, which places it slightly below full 250cc capacity. Despite that, it still offers a balanced mix of power, efficiency, and control.

Key Engine Specs:

Displacement: 223cc
Configuration: Single Cylinder
Cooling System: Air-cooled
Compression Ratio: 9.25:1
Max Power: 10.8 kW at 7,500 rpm (~14.5 HP)
Max Torque: 15 Nm at 6,000 rpm
Max Speed: ~110 km/h (around 68 mph)

This engine, paired with a 6-speed manual transmission, ensures smooth gear shifts and gives riders the flexibility to cruise at highway speeds while maintaining fuel efficiency. Unlike many budget bikes stuck with 5 gears, the 6-speed gearbox helps the engine run at lower RPMs during high-speed cruising, which saves fuel and reduces wear.

The Electronic Fuel Injection (EFI) system is another highlight. Many cheaper dirt bikes still rely on carburetors, but EFI provides better throttle response, improved cold starts, and more consistent performance across different weather conditions and altitudes. For new riders or those upgrading from older carbureted bikes, this is a noticeable improvement. View current offers

Handling and Ride Quality

The BOOM 250cc comes with 17-inch tires on both the front and rear, which is larger than many standard dirt bikes that use a 21-inch front wheel. While this may reduce some of the extreme off-road capability, it makes the bike more stable and comfortable for street use. The tires—120/80 at the front and 150/70 at the rear—offer solid traction and stability.

Suspension Setup:

Front Suspension: Hydraulic Suspension
Rear Suspension: Hydraulic Suspension

Hydraulic suspension systems, while not top-of-the-line, do a decent job of absorbing bumps and shocks on uneven terrains. Riders won’t get the ultra-smooth feel of high-end dirt bikes, but considering the price range, the suspension strikes a good balance for mixed-use riding.

With a ground clearance of 150mm (about 6 inches), the bike is capable of handling moderate trails, potholes, and rocky paths without much trouble. It’s not built for extreme motocross stunts, but for weekend off-road fun and everyday commuting, it performs well.

The wheelbase of 1430mm provides stability at higher speeds, while the overall weight of 180 kg (net) ensures the bike feels planted without being overly heavy to maneuver.

Braking and Safety

The bike comes equipped with double disc brakes in the front and a single disc brake in the rear. This dual-disc front setup is a welcome addition, as many entry-level dirt bikes stick to a single disc.

Disc brakes provide stronger and more consistent stopping power compared to drum brakes, especially in wet conditions. While the bike doesn’t feature ABS (Anti-lock Braking System), the disc brakes still give riders confidence during emergency braking situations.

Fuel Economy and Tank Capacity

Fuel efficiency is always a concern for riders, and the BOOM 250cc delivers solid mileage thanks to its EFI system and lightweight design.

Fuel Consumption: ~2.9L per 100km (~80 mpg)
Fuel Tank Capacity: 15 liters (~4 gallons)

With this setup, riders can expect a range of 350–400 km (220–250 miles) on a full tank, making it suitable for longer trips without constant refueling. This efficiency makes it appealing not just for adventure seekers, but also for commuters who want a stylish bike without spending a fortune on gas.

Design and Build Quality

The BOOM 250cc is marketed as both a dirt bike and a street bike, which explains its hybrid design language. It has a taller stance than a typical commuter bike, with wide tires, higher ground clearance, and a sturdy steel frame.

Dimensions:

L × W × H: 86 × 30 × 42 inches (packaged)
Weight Capacity: 150 kg (~330 lbs) payload

This makes it a good choice for average-sized riders, though taller riders above 6 feet may feel slightly cramped.

The black paint finish gives it a premium, aggressive look. There’s also a white version, priced slightly higher at $2,998.11, for those who prefer a lighter color scheme.

Practical Features

Dual Starting System – Riders get both electric start and kick start, which is handy if the battery runs out.
MSO & Bill of Sale by Mail – While slightly inconvenient, this ensures proper documentation for registration.
Easy Assembly – With the bike arriving 95% assembled, even beginners can set it up quickly.
Sturdy Frame + Steel & Carton Packaging – The bike is securely shipped, minimizing transport damage. View current offers

Price and Financing Options View current offers

At $2,961.82, the BOOM 250cc is priced competitively for its class. Many Japanese and European dirt bikes with similar specs can cost $5,000–$7,000 or more. For budget-conscious riders, this makes the BOOM an attractive option.

Financing options also make it accessible:

$117.22/month over 48 months
Or $80 off instantly with an Amazon Store Card.

This means riders can get started with this bike without a huge upfront investment.

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Customer Reviews

The BOOM 250cc currently holds a 3.8 out of 5-star rating on Amazon, based on 14 reviews.

Positive Feedback:

Many customers praise its value for money compared to more expensive brands.
Riders appreciate the smooth EFI system and easy assembly.
The fuel economy and stylish design also receive compliments.

Negative Feedback:

Some riders mention minor quality issues such as loose bolts or adjustments needed after delivery.
Lack of dealer support and local service centers means maintenance may require DIY skills.
A few customers reported delays in receiving paperwork for registration.

Overall, the bike is seen as a great budget alternative, but not without some compromises in after-sales support.

Pros and Cons

Pros:

✅ Affordable price compared to competitors
✅ EFI system for better performance and fuel economy
✅ 6-speed manual transmission for smoother riding
✅ Double front disc brakes for improved safety
✅ Good mix of dirt and street usability
✅ Large 15L fuel tank with long range
✅ Stylish, aggressive design

Cons:

❌ Slightly underpowered compared to true 250cc bikes
❌ Limited dealer and service support
❌ Some assembly required and paperwork delays
❌ No ABS system
❌ Build quality not at the same level as premium brands

Who Should Buy the BOOM 250cc?

This bike is best suited for:

Beginner and intermediate riders who want an affordable entry into dirt/street biking.
Commuters looking for a fuel-efficient motorcycle that stands out from basic scooters and small bikes.
Adventure seekers who enjoy weekend trail rides but don’t need extreme off-road performance.
Budget-conscious buyers who want the style and feel of a dirt bike without paying premium prices.

It may not be ideal for professional motocross riders or those looking for top-tier performance, but for its price, the BOOM 250cc delivers a balanced, versatile, and stylish motorcycle experience.

Final Verdict

The BOOM 250cc 6 Speed EFI Dirt Bike (BLACK) is not just a budget motorcycle—it’s a versatile ride that balances on-road comfort with off-road capability. With its EFI system, 6-speed gearbox, large fuel tank, and disc brakes, it offers features often found in more expensive models.

While it has its drawbacks—such as limited dealer support and slightly lower engine displacement than a true 250cc—it remains an attractive option for new riders, commuters, and anyone seeking a fun, affordable motorcycle.

For under $3,000, it’s hard to beat the combination of style, performance, and practicality this bike brings to the table.

If you’re looking for an entry-level dirt/street bike that won’t break the bank, the BOOM 250cc could be the perfect ride to kickstart your motorcycle adventures.

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