Xmotos XB-21 - 2008 Specifications and Reviews
The 2008 Xmotos XB-21 is a lightweight 50cc minibike designed for young riders and beginners seeking an affordable entry into motorcycling. Its compact frame, automatic transmission, and low seat height make it ideal for learning basic riding skills. Known for its simple air-cooled engine and minimal maintenance requirements, this cross-styled bike offers practical fun for casual off-road use.
2008
Engine and Transmission Specifications | |
| Transmission typefinal drive | Chain |
| Gearbox | Automatic |
| Cooling system | Air |
| Bore x stroke | 39.0 x 41.4 mm (1.5 x 1.6 inches) |
| Compression | 9.4:1 |
| Power | 3.48 |
| Stroke | 4 |
| Engine type | Single cylinder |
| Capacity: | 50.00 ccm (3.05 cubic inches) |
| | |
Physical measures and capacities | |
| Wheelbase | 950 mm (37.4 inches) |
| Ground clearance | 150 mm (5.9 inches) |
| Overall length | 1,320 mm (52.0 inches) |
| Seat height | 650 mm (25.6 inches) If adjustable, lowest setting. |
| Dry weight | 50.0 kg (110.2 pounds) |
Xmotos XB-21 dimensions and frame | |
| Rear brakes | Expanding brake (drum brake) |
| Front brakes | Expanding brake (drum brake) |
| Rear suspension | Adjustable Air /Oil shock Absorber |
| Front suspension | Inverted hydraulic Adjustable shock |
Speed and acceleration | |
| Power/weight ratio | 0.0696 HP/kg |
| | |
| Category | Minibike, cross |
| Year | 2008 |
| Model | Xmotos XB-21 |
Other specs | |
| Maintenance | Find parts, fluids, filters, maintenance tools and service items on eBay |
| Color options | Black, Red, Green, Blue, Yellow, carbon block, orange |
| Fuel capacity | 3.00 litres (0.79 gallons) |
Performance Profile & Rider Fit
3.5 hp
Peak Power
Best For
Track5%
City10%
Cornering20%
Daily Riding5%
Touring2%
Passenger0%
Rider Profile
| Best For | This is an entry-level minibike suited to young or novice riders taking their first steps on two wheels, not for licensed road use. |
| Purpose | Designed for casual backyard and light off-road cross riding rather than any serious performance or commuting task. |
| Rider Fit | Its tiny 50mm seat height and 50kg weight make it accessible to small or lightweight riders, particularly kids or petite teens. |
| Character | A simple, low-power automatic pit-bike style machine that prioritizes fun and forgiveness over speed or capability. |
| Not Ideal For | This is not suitable for adult riders seeking real off-road performance, highway travel, or carrying a passenger. |
Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.
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