Derbi Dirt Boy
2007Minibike

Derbi Dirt Boy

Key specifications

Engine
50 cc
Power
5 HP
Fuel type
petrol
Fuel capacity
0.6 L
Transmission
1-speed
Front brakes
Single disc
Rear brakes
Expanding brake (drum brake)

Overview

Introducing the 2007 Derbi Dirt Boy, a spirited minibike-cross designed specifically for younger riders eager to embrace the thrill of motorcycling. As a lightweight and agile contender in the market, the Dirt Boy serves as an excellent introduction to off-road riding, offering a perfect blend of fun and functionality. With its playful design and robust build, this bike is tailored to instill confidence in budding motorcyclists while ensuring safety and reliability on various terrains. At the heart of the Dirt Boy lies a peppy 49.90 cc single-cylinder, four-stroke engine. This compact powerhouse delivers a spirited 4.60 HP at 8500 RPM, allowing for playful acceleration and the ability to tackle dirt trails with ease. The 12.0:1 compression ratio enhances power output, while the air-cooled configuration keeps the engine running smoothly even during spirited rides. The simplicity of the 1-speed gearbox coupled with a lightweight frame ensures that young riders can focus on developing their riding skills without the complexity of manual shifting. Whether navigating through tight corners or cruising along open trails, the Dirt Boy promises an exhilarating experience. In terms of features, the 2007 Derbi Dirt Boy is equipped with a reliable kick starter, ensuring that young riders can easily start their adventure. The bike’s single disc front brake, measuring 160 mm in diameter, provides effective stopping power, while the expanding drum brake at the rear offers added safety. With a compact length of 1,290 mm and a width of 590 mm, it's designed for smaller riders, promoting better control and maneuverability. The Dirt Boy comes in a striking white finish that appeals to the youthful spirit, making it not only a practical choice but also an eye-catching one. **

Pros

  • Lightweight and Compact: Ideal for younger riders, making it easy to handle and maneuver.
  • User-Friendly Engine: The 1-speed gearbox simplifies riding, allowing beginners to focus on skills without the distraction of shifting gears.
  • Effective Braking System: The combination of a front disc brake and rear drum brake provides reliable stopping power, enhancing safety.

Cons

  • Limited Power: At 4.60 HP, the performance may feel restrictive for older or more experienced riders seeking adrenaline.
  • Small Fuel Capacity: With only 2.30 liters (0.61 gallons) of fuel capacity, longer rides may require more frequent refueling stops.
  • Basic Features: While functional, the Dirt Boy lacks advanced technology or amenities that could enhance the riding experience for more seasoned bikers.

Technical details

Source specification data

Make
Derbi
Model
Dirt Boy
Category
Minibike-cross
Starter
Kick
Comments
Intended for children.
Color Options
White
Power
4.60 HP (3.4 kW)) @ 8500 RPM
Gearbox
1-speed
Ignition
CDI
Bore X Stroke
39.0 x 41.0 mm (1.5 x 1.6 inches)
Compression
12.0:1
Displacement
49.90 ccm (3.04 cubic inches)
Cooling System
Air
Engine Details
Single cylinder, four-stroke
Lubrication System
Oil Pump
Fuel Capacity
2.30 litres (0.61 gallons)
Overall Width
590 mm (23.2 inches)
Overall Length
1,290 mm (50.8 inches)
Rear Brakes
Expanding brake (drum brake)
Front Brakes
Single disc
Front Brakes Diameter
160 mm (6.3 inches)

Available colors

White