Engineered by Derbi for the scooter motorcycle segment, the 2015 Derbi Variant Sport 125 4T pairs a 124 cc (7.6 cu in) air-cooled single cylinder, four-stroke architecture with road-focused gearing. Internal engine geometry specifies a bore and stroke of 57.0 x 48.6 mm (2.2 x 1.9 inches) with a 10.6:1 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 1,357 mm (53.4 in) wheelbase engineered for quick, flickable steering geometry. The 7.5-liter (2 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Standover Height
775 mm (30.5 in)
Engine
Displacement124.0 ccm (7.57 cubic inches)
Engine TypeSingle cylinder, four-stroke
Engine DetailsSingle cylinder, four-stroke
Compression10.6:1
Bore x Stroke57.0 x 48.6 mm (2.2 x 1.9 inches)
Fuel SystemCarburettor. Keihin
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)
Wheelbase1357 mm (53.4 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.
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.
