Derbi Dirt Boy - 2007 Specifications and Reviews
The 2007 Derbi Dirt Boy is a compact 50cc minibike designed for young riders and beginners seeking off-road thrills. Its lightweight frame and simple kick-start single-cylinder engine deliver accessible performance for dirt biking fundamentals. Known for affordable entry-level fun, it combines basic reliability with the rugged character needed for trail riding.
2007
Engine and Transmission Specifications | |
| Gearbox | 1-speed |
| Cooling system | Air |
| Lubrication system | Oil pump |
| Starter | Kick |
| Ignition | CDI |
| Bore x stroke | 39.0 x 41.0 mm (1.5 x 1.6 inches) |
| Compression | 12.0:1 |
| Power | 4.60 |
| Stroke | 4 |
| Engine type | Single cylinder |
| Capacity: | 49.90 ccm (3.04 cubic inches) |
Physical measures and capacities | |
| Wheelbase | 905 mm (35.6 inches) |
| Overall width | 590 mm (23.2 inches) |
| Overall length | 1,290 mm (50.8 inches) |
Derbi Dirt Boy dimensions and frame | |
| Rear brakes | Expanding brake (drum brake) |
| Front brakes diameter | 160 mm (6.3 inches) |
| Front brakes | Single disc |
| | |
Speed and acceleration | |
| Color options | White |
| Fuel capacity | 2.30 litres (0.61 gallons) |
| Category | Minibike, cross |
| Year | 2007 |
| Model | Derbi Dirt Boy |
Other specs | |
| Maintenance | Find parts, fluids, filters, maintenance tools and service items on eBay |
Performance Profile & Rider Fit
4.6 hp
Peak Power
Best For
Track5%
City10%
Cornering30%
Daily Riding5%
Touring2%
Passenger0%
Rider Profile
| Best For | This is an entry-level minibike best suited to young or beginner riders taking their first steps on two wheels. |
| Purpose | Designed purely for casual backyard and off-road fun rather than any serious performance or commuting use. |
| Rider Fit | Its tiny frame, low seat height, and light weight demand very little physical strength or size from the rider, fitting smaller riders best. |
| Character | A playful, low-stakes machine that rewards curiosity and casual messing about rather than any kind of speed thrill. |
| Not Ideal For | This is not for adult riders seeking real off-road capability, highway use, or any kind of touring or passenger carrying. |
Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.
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