2004 Beta Alp 4.0 Technical Analysis & Specification Breakdown
Positioned in Beta's enduro - offroad motorcycle lineup, the 2004 Beta Alp 4.0 relies on a 349 cc (21.3 cu in) air-cooled single cylinder, four-stroke powerplant. Internal engine geometry specifies a bore and stroke of 79.0 x 71.2 mm (3.1 x 2.8 inches) with a 9.5:1 compression ratio.
On the scales, the Alp 4.0 measures 133 kg (293 lbs) dry. Rider ergonomics and chassis geometry center around a 870 mm (34.3 in) seat height — reflecting a long-travel chassis stance that favors ground clearance and off-pavement control, combined with a 1,410 mm (55.5 in) wheelbase engineered for quick, flickable steering geometry. The 10.5-liter (2.8 US gal) fuel tank supports practical everyday commuting and weekend road stints.
Within MotoLibrary's Beta archive, this model family spans 7 indexed model years from 2004 to 2024, allowing buyers to track year-over-year changes in emissions tuning, weight and equipment.
Standover Height
870 mm (34.3 in)
Engine
Displacement349.0 ccm (21.30 cubic inches)
Engine TypeSingle cylinder, four-stroke
Engine DetailsSingle cylinder, four-stroke
Compression9.5:1
Bore x Stroke79.0 x 71.2 mm (3.1 x 2.8 inches)
Valves/Cylinder4
Fuel SystemCarburettor
Fuel ControlSingle Overhead Cams (SOHC)
CoolingAir
Transmission
Gearbox6-speed
Final DriveChain (final drive)
Chassis
Frame TypeDouble craded steel frame
Front SuspensionHydraulic fork
Front Travel220 mm (8.7 inches)
Rear SuspensionRear suspension single shock with adjustable spring
Rear Travel220 mm (8.7 inches)
Wheelbase1410 mm (55.5 inches)
Ground Clearance240 mm (9.4 inches)
Wheels & Brakes
Front Tyre90/90-21
Rear Tyre140/80-18
Front BrakesSingle disc
Front Brake Ø260 mm (10.2 inches)
Rear BrakesSingle disc
Rear Brake Ø220 mm (8.7 inches)
Dimensions & Weight
Dry Weight133.0 kg (293.2 pounds)
Seat Height870 mm (34.3 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.
