2006 Aprilia Sonic 50 GP Technical Analysis & Specification Breakdown
Engineered by Aprilia for the scooter motorcycle segment, the 2006 Aprilia Sonic 50 GP utilizes a 49.3 cc (3 cu in) liquid-cooled single cylinder, two-stroke layout. Internal engine geometry specifies a bore and stroke of 40.0 x 39.2 mm (1.6 x 1.5 inches) with a 12.5:1 compression ratio.
On the scales, the Sonic 50 GP measures 73 kg (161 lbs) dry. Rider ergonomics and chassis geometry center around a 770 mm (30.3 in) seat height — offering a neutral standover height that accommodates most average-inseam riders without sacrificing cornering clearance, combined with a 1,175 mm (46.3 in) wheelbase engineered for quick, flickable steering geometry. The 8-liter (2.1 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Within MotoLibrary's Aprilia archive, this model family spans 2 indexed model years from 2006 to 2008, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Standover Height
770 mm (30.3 in)
Engine
Displacement49.3 ccm (3.01 cubic inches)
Engine TypeSingle cylinder, two-stroke
Engine DetailsSingle cylinder, two-stroke
Compression12.5:1
Bore x Stroke40.0 x 39.2 mm (1.6 x 1.5 inches)
Fuel SystemCarburettor. Dell’Orto PH BN12
LubricationSeparate mixing with mechanical pump
CoolingLiquid
Transmission
Final DriveBelt (final drive)
Chassis
Frame TypeSplit single cradle in high strength tubular steel.
Wheelbase1175 mm (46.3 inches)
Wheels & Brakes
Front Tyre100/90-10
Rear Tyre100/90-10
Front BrakesSingle disc
Rear BrakesExpanding brake (drum brake)
Dimensions & Weight
Dry Weight73.0 kg (160.9 pounds)
Seat Height770 mm (30.3 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.
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.
