2004 Factory Bike Desert YR 250 Technical Analysis & Specification Breakdown
Positioned in Factory Bike's enduro - offroad motorcycle lineup, the 2004 Factory Bike Desert YR 250 utilizes a 249.8 cc (15.2 cu in) liquid-cooled single cylinder, two-stroke layout. In factory specification, peak output is rated at 50 HP (36.5 kW), transferring power to the rear wheel through a 6-speed gearbox and chain final drive. With a specific output of 200.2 HP per liter, the engine character is placing it firmly in high-revving supersport territory where top-end breathing dominates.
On the scales, the Desert YR 250 measures 103 kg (227 lbs) wet (curb), translating to a power-to-weight ratio of 0.49 HP/kg (2.06 kg per horsepower). Rider ergonomics and chassis geometry center around a 1,370 mm (53.9 in) wheelbase engineered for quick, flickable steering geometry. The 9.5-liter (2.5 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Within MotoLibrary's Factory Bike archive, this model family spans 2 indexed model years from 2004 to 2005, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Specific Output
200.2 HP/L
Power-to-Weight
0.49 HP/kg (2.06 kg/HP)
Engine
Displacement249.8 ccm (15.24 cubic inches)
Engine TypeSingle cylinder, two-stroke
Engine DetailsSingle cylinder, two-stroke
Power50.0 HP (36.5 kW))
Compression12.0:1
Bore x Stroke67.5 x 69.8 mm (2.7 x 2.7 inches)
Fuel SystemCarburettor
CoolingLiquid
Transmission
Gearbox6-speed
Final DriveChain (final drive)
Chassis
Frame TypeDesmontabled hardened steel CrMo.
Front SuspensionMarzocci Hydraulic, 50 mm
Rear SuspensionOhlins shock absorber
Wheelbase1370 mm (53.9 inches)
Wheels & Brakes
Front Tyre90/90-21
Rear Tyre140/80-18
Front BrakesSingle disc
Front Brake Ø260 mm (10.2 inches)
Rear BrakesSingle disc
Rear Brake Ø220 mm (8.7 inches)
Dimensions & Weight
Weight incl.103.0 kg (227.1 pounds)
Overall Height1180 mm (46.5 inches)
Overall Length2230 mm (87.8 inches)
Overall Width815 mm (32.1 inches)
Fuel Capacity9.50 litres (2.51 US gallons)
Other
Color OptionsRead, BLue
Notes
Spanish made. Rotax motor. The Desert YR250 is termed a racing off-road bike.
Use this page to compare this motorcycle by its real specifications, not only by model name. Focus on the details that affect fit, comfort, handling, range and ownership.
Power
Compare engine output with similar motorcycles if acceleration, highway use or two-up riding matters.
Fuel Capacity
Fuel capacity helps estimate touring range and how often you may need to stop.
Brakes
Brake setup is worth comparing if you ride in traffic, mountains or with a passenger.
Suspension
Suspension details can matter for comfort, road feel and long-distance riding.
Transmission
Transmission and final drive affect maintenance, smoothness and everyday usability.
