2012 Beta Alp 125 Technical Analysis & Specification Breakdown
At the heart of the 2012 Beta Alp 125 enduro - offroad motorcycle, Beta utilizes a 124 cc (7.6 cu in) air-cooled single cylinder, four-stroke layout. Internal engine geometry specifies a bore and stroke of 66.0 x 58.2 mm (2.6 x 2.3 inches) with a 9.4:1 compression ratio.
On the scales, the Alp 125 measures 107.5 kg (237 lbs) dry. Rider ergonomics and chassis geometry center around a 830 mm (32.7 in) seat height — resulting in a taller command-style riding posture suited to medium-to-tall inseams, combined with a 1,370 mm (53.9 in) wheelbase engineered for quick, flickable steering geometry. The 6.8-liter (1.8 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Within MotoLibrary's Beta archive, this model family spans 6 indexed model years from 2001 to 2012, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Standover Height
830 mm (32.7 in)
Engine
Displacement124.0 ccm (7.57 cubic inches)
Engine TypeSingle cylinder, four-stroke
Engine DetailsSingle cylinder, four-stroke
Compression9.4:1
Bore x Stroke66.0 x 58.2 mm (2.6 x 2.3 inches)
Fuel SystemCarburettor. Mikuni BST 31 42AD
Fuel ControlSingle Overhead Cams (SOHC)
LubricationForced with pump
CoolingAir
Transmission
Gearbox5-speed
Final DriveChain (final drive)
ClutchWet multi-disc
Chassis
Front SuspensionHydraulic fork, ø38 mm
Front Travel170 mm (6.7 inches)
Rear SuspensionMonoshock with adjustable spring preload
Rear Travel180 mm (7.1 inches)
Wheelbase1370 mm (53.9 inches)
Ground Clearance300 mm (11.8 inches)
Wheels & Brakes
Front Tyre90/90-21
Rear Tyre120/80-18
Front BrakesSingle disc
Front Brake Ø245 mm (9.6 inches)
Rear BrakesSingle disc
Rear Brake Ø220 mm (8.7 inches)
Dimensions & Weight
Dry Weight107.5 kg (237.0 pounds)
Seat Height830 mm (32.7 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.
