2011 Derbi GPR 50 R Technical Analysis & Specification Breakdown
Engineered by Derbi for the sport motorcycle segment, the 2011 Derbi GPR 50 R features a 49.9 cc (3 cu in) liquid-cooled single cylinder, two-stroke configuration. In factory specification, peak output is rated at 8.5 HP (6.2 kW) at 10,000 rpm while maximum torque reaches 5.9 Nm (4.4 lb-ft) at 9,000 rpm, transferring power to the rear wheel through a 6-speed gearbox and chain final drive. Internal engine geometry specifies a bore and stroke of 39.9 x 40.0 mm (1.6 x 1.6 inches) with a 11.5:1 compression ratio.
On the scales, the GPR 50 R measures 121 kg (267 lbs) wet (curb), translating to a power-to-weight ratio of 0.07 HP/kg (14.24 kg per horsepower). Rider ergonomics and chassis geometry center around a 1,360 mm (53.5 in) wheelbase engineered for quick, flickable steering geometry. The 13-liter (3.4 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Within MotoLibrary's Derbi archive, this model family spans 3 indexed model years from 2003 to 2011, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
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.
Torque
Torque is useful for judging real-world pull, especially for touring, commuting and loaded riding.
Weight
Compare weight carefully because it affects low-speed handling, parking and confidence.
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.
