Derbi GPR 50 2T - 2011 Specifications and Reviews

The 2011 Derbi GPR 50 2T is an entry-level sport motorcycle designed for young riders and beginners seeking an agile, lightweight machine. Its liquid-cooled two-stroke engine delivers punchy performance characteristic of the category, while the six-speed transmission and compact 49cc displacement make it ideal for urban commuting and learning proper riding technique.

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Engine and Transmission Specifications

ClutchMulti-plate
Gearbox6-speed
Cooling systemLiquid
Lubrication systemOil pump
IgnitionC.D.I.
Fuel controlSOHC
Fuel systemCarburettor. 17.5 mm
Bore x stroke39.9 x 40.0 mm (1.6 x 1.6 inches)
Compression11.5:1
Torque5.90 Nm (0.6 kgf-m or 4.4 ft.lbs) @ 9000
Power8.45
Engine typeSingle cylinder, two-stroke
Capacity:49.90 ccm (3.04 cubic inches)
 
 

CategorySport
Year2011
ModelDerbi GPR 50 2T
 
 

Brakes, suspension, Frame and wheels

Rear brakes diameter218 mm (8.6 inches)
Rear brakesSingle disc
Front brakes diameter300 mm (11.8 inches)
Front brakesSingle disc
Rear tyre dimensions130/70-17
Front tyre dimensions100/80-17
Rear suspension travel120 mm (4.7 inches)
Rear suspensionMonoshock.
Front suspension travel110 mm (4.3 inches)
Front suspension40 mm. hydraulic fork.
Frame typeTubular steel cradle

Physical measures and capacities

Fuel capacity13.00 litres (3.43 gallons)
Wheelbase1,360 mm (53.5 inches)
Overall width720 mm (28.3 inches)
Overall length2,015 mm (79.3 inches)
Seat height810 mm (31.9 inches) If adjustable, lowest setting.
Power/weight ratio0.0768 HP/kg
Dry weight110.0 kg (242.5 pounds)

Other specs

MaintenanceFind parts, fluids, filters, maintenance tools and service items on eBay
Color optionsBlack/yellow
StarterElectric

Performance Profile & Rider Fit

8.5 hp
Peak Power

Best For

Track40%
City70%
Cornering60%
Daily Riding45%
Touring15%
Passenger15%

Rider Profile

Best ForThis is a learner-legal 50cc sportbike aimed at new riders, typically teenagers on a moped licence, rather than experienced motorcyclists.
PurposeIts purpose is short urban and suburban commuting with sporty styling, not genuine performance riding.
Rider FitThe compact, lightweight sportbike chassis suits smaller and lighter riders, with a low-ish seat height and racy but not extreme ergonomics.
CharacterIt looks and feels like a mini superbike, offering playful handling and a sporty riding position despite very modest two-stroke performance.
Not Ideal ForThis is not for riders wanting real speed, highway travel, passenger comfort, or off-road capability.

Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.

Rider Fit Visualizer

2011 Derbi GPR 50 2T Rider Ergonomics Assessment

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Feet:

At 810mm, a rider of 175cm with a 79cm (estimated) inseam will reach the ground with both feet flat on the 2011 Derbi GPR 50 2T, with a cramped knee angle of around 70 degrees and a forward-leaning riding position.

Data quality: measured. Assumes about 30mm of suspension sag once seated (a typical street-bike rule of thumb - stiffer or softer suspension will vary). This is an approximation from category-typical geometry and generic body proportions, not a measurement of this specific bike or you - sit on it before you buy.

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