At the heart of the 2015 Derbi Variant Sport 50 2T scooter motorcycle, Derbi pairs a 49.8 cc (3 cu in) air-cooled single cylinder, two-stroke architecture with road-focused gearing. In factory specification, peak output is rated at 5.8 HP (4.2 kW) at 7,500 rpm, transferring power to the rear wheel through a automatic gearbox and shaft drive (cardan) 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 10.1:1 compression ratio.
Rider ergonomics and chassis geometry center around a 775 mm (30.5 in) seat height — offering a neutral standover height that accommodates most average-inseam riders without sacrificing cornering clearance, combined with a 1,200 mm (47.2 in) wheelbase engineered for quick, flickable steering geometry. The 7-liter (1.8 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Within MotoLibrary's Derbi archive, this model family spans 2 indexed model years from 2015 to 2017, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Standover Height
775 mm (30.5 in)
Engine
Displacement49.8 ccm (3.04 cubic inches)
Engine TypeSingle cylinder, two-stroke
Engine DetailsSingle cylinder, two-stroke
Power5.8 HP (4.2 kW)) @ 7500 RPM
Compression10.1:1
Bore x Stroke39.9 x 40.0 mm (1.6 x 1.6 inches)
Fuel SystemCarburettor. Keihin 16
CoolingAir
Transmission
GearboxAutomatic
Final DriveShaft drive (cardan) (final drive)
Chassis
Frame TypeOpen cradle, steel piping
Front SuspensionTelescopic fork
Front Travel85 mm (3.3 inches)
Rear SuspensionSingle shock
Rear Travel50 mm (2.0 inches)
Wheelbase1200 mm (47.2 inches)
Wheels & Brakes
Front Tyre120/70-14
Rear Tyre120/70-14
Front BrakesSingle disc
Front Brake Ø220 mm (8.7 inches)
Rear BrakesExpanding brake (drum brake)
Rear Brake Ø140 mm (5.5 inches)
WheelsBlack rims
Dimensions & Weight
Seat Height775 mm (30.5 inches) If adjustable, lowest setting.
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.
Seat Height
Check the seat height against your inseam and riding posture before choosing a motorcycle.
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.
