Beta Ark 50 AC - Specifications & Review

Ark 50 AC

Article Complete Info

Articleid416689
CategoryScooter
MakeBeta
ModelArk 50 AC
Year2007

Chassis, Suspension, Brakes & Wheels

FrametypeTubular steel
FrontbrakesSingle disc
Frontbrakesdiameter190 mm (7.5 inches)
FrontsuspensionHydraulic fork with ø32 mm shaft
Fronttyre130/60-13
Frontwheeltravel32 mm (1.3 inches)
RearbrakesExpanding brake (drum brake)
Rearbrakesdiameter110 mm (4.3 inches)
RearsuspensionMonoshock with adjustable spring preload
Reartyre130/60-13

Engine & Transmission

Borexstroke40.0 x 39.2 mm (1.6 x 1.5 inches)
ClutchDry automatic centrifugal type
Compression12.0:1
CoolingsystemAir
Displacement49.00 ccm (2.99 cubic inches)
EnginedetailsSingle cylinder, two-stroke
FuelsystemCarburettor. Dell´Orto PHVA 12 HS
GearboxAutomatic
IgnitionElectronic Ducati 12V - 60W
LubricationsystemWith mechanical pump - gasoline-oil 1,5% (with synthetic oil)
TransmissiontypefinaldriveBelt

Other Specifications

ColoroptionsBlck, Silver, Blue

Physical Measures & Capacities

Dryweight84.0 kg (185.2 pounds)
Fuelcapacity7.50 litres (1.98 gallons)
Groundclearance215 mm (8.5 inches)
Overallheight1,150 mm (45.3 inches)
Overalllength1,740 mm (68.5 inches)
Overallwidth750 mm (29.5 inches)
Reservefuelcapacity1.30 litres (0.34 gallons)
Seatheight830 mm (32.7 inches) If adjustable, lowest setting.

About Beta

Country of Origin: Italy
Founder: Giuseppe Bianchi & Arrigo Tosi (Betamotor S.p.A.)
Best Known For: Trials and enduro dominance; RR/RS enduros and Evo trials line

Company History

Betamotor began in 1905 building bicycles in Florence and evolved into one of the world’s premier off-road motorcycle makers. The company’s DNA is balance and traction—first in observed trials, where featherweight control and throttle finesse matter, and later in enduro, where day-long reliability meets special-stage speed. Beta’s modern RR/RS enduros are renowned for chassis that communicate clearly, engines with tractable midrange, and suspension valving that works out of the crate for real riders, not just pros. The Evo trials line continues to win at the highest levels, feeding lessons about weight distribution and clutch feel back into the enduro range. Unlike some rivals, Beta embraces rider-scale adjustability—map switches, power valve tweaks, and ergonomic options that let owners tailor bikes without a race truck. Historically, Beta personifies Italian craftsmanship aimed at dirt: elegant castings, tidy looms, and field-friendly service. Club racers and trail riders praise how Betas turn fatigue into flow; the bikes reward precise inputs yet forgive mistakes. In a category where specs are loud, Beta’s quiet confidence—how the bike feels between trees—has built a fiercely loyal following.

Other Years

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