2008 Aprilia Sonic 50 Technical Analysis & Specification Breakdown
Built around Aprilia's scooter motorcycle platform, the 2008 Aprilia Sonic 50 pairs a 49.3 cc (3 cu in) air-cooled single cylinder, two-stroke architecture with road-focused gearing. 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 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.
Frame TypeSplit single cradle in high strength tubular steel
Front SuspensionHydraulic fork; Ø 27 mm stanchions
Front Travel65 mm (2.6 inches)
Rear SuspensionEngine acting as swingarm, attached to the frame by rising rate linkages on 2 radial and 2 axial vibration dampers. Rising rate monoshock; Ø 50.5 mm spring
Rear Travel70 mm (2.8 inches)
Wheelbase1175 mm (46.3 inches)
Wheels & Brakes
Front Tyre100/90-10
Rear Tyre100/90-10
Front BrakesSingle disc. caliper with two opposing Ø 32 mm pistons
Front Brake Ø155 mm (6.1 inches)
Rear BrakesExpanding brake (drum brake)
Rear Brake Ø110 mm (4.3 inches)
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.
Suspension
Suspension details can matter for comfort, road feel and long-distance riding.
Transmission
Transmission and final drive affect maintenance, smoothness and everyday usability.
