Aprilia Sonic Gp 50 - Specifications & Review

Sonic Gp 50

Article Complete Info

Articleid969138
CategoryScooter
MakeAprilia
ModelSonic Gp 50
Price Euro 2150. Prices depend on country, taxes, accessories, etc.
Year1999

Chassis, Suspension, Brakes & Wheels

Frametypeone beam, split in two cradles
FrontbrakesSingle disc. 155m with hydraulic transmission
Frontsuspensionhydrauliclly operated teleoscopic fork
Frontwheeltravel65 mm (2.6 inches)
RearbrakesExpanding brake (drum brake). drum brake,110 m with mechanic transmission
Rearbrakesdiameter110 mm (4.3 inches)
Rearsuspensionhydraulic monoshock absorber
Rearwheeltravel70 mm (2.8 inches)

Engine & Transmission

Borexstroke40.0 x 39.2 mm (1.6 x 1.5 inches)
Compression0.5:1
CoolingsystemLiquid
Displacement49.26 ccm (3.01 cubic inches)
EnginedetailsSingle cylinder, two-stroke
Exhaustsystemstainless steel pipe
Fuelconsumption99.99 litres/100 km (1.0 km/l or 2.35 mpg)
FuelsystemCarburettor. unleaded petrol according to Din 51607
GearboxAutomatic
Greenhousegases2,319.8 CO2 g/km. (CO2 - Carbon dioxide emission)
IgnitionCDI
Maxrpm1800
Onequartermile20.000 seconds
Topspeed48.3 km/h (30.0 mph)
TransmissiontypefinaldriveBelt
Valvespercylinder2
Zerotoonehundred20.000 seconds

Other Specifications

Coloroptionsyellow, black, red and black, blue
Commentsi have given all the information that i know to the best of my knowledge about this bike
StarterElectric & kick

Physical Measures & Capacities

Dryweight105.0 kg (231.5 pounds)
Fuelcapacity8.00 litres (2.11 gallons)
Reservefuelcapacity1.50 litres (0.40 gallons)
Weightincloilgasetc180.0 kg (396.8 pounds)

About Aprilia

Country of Origin: Italy
Founder: Cavaliere Alberto Beggio (later led by Ivano Beggio)
Best Known For: GP-winning two-strokes (RS125/250), RSV superbikes, and cutting-edge electronics

Company History

Aprilia started in Noale after WWII as a bicycle company before pivoting to mopeds and small-displacement motorcycles. Under Ivano Beggio in the 1970s–90s, Aprilia embraced racing as R&D, building fierce RS125/250 two-strokes that produced world champions and taught countless Europeans how a chassis should feel. The brand’s road lineup mirrored podium lessons: lightweight frames, sharp geometry, and brakes from the top shelf. With the RSV Mille, later RSV4, Aprilia brought V-twin then V-4 sophistication to superbikes, pairing compact engines with electronics that arrived early and matured fast—ride-by-wire, APRC traction/wheelie control, and track-calibrated ABS. The Tuono popularized the ‘supernaked’ formula, while the Shiver/Dorsoduro explored middleweight versatility. Scooter successes and the Caponord/Tuareg adventure lines broadened reach without surrendering the handling DNA. Aprilia’s factory in Noale retained a skunkworks spirit, where racing engineers and production teams traded ideas rapidly; the RS-GP MotoGP effort further refined aero and electronics that later influenced streetbikes. Historically, Aprilia matters because it democratized race feel: crisp steering, clear feedback, and tech that flatters riders rather than overwhelms them. Owners speak of precision—bikes that reward clean inputs and repay attention to tire pressures and setup. In the pantheon of Italian marques, Aprilia stands for modernity: less baroque drama, more lap-time logic, and an insistence that every model carry a little paddock in its genes.

Other Years

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