2025Beta Alp 4.0

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The 2025 Beta Alp 4.0 is a dual-sport bike for trail riding and back roads, aimed at riders who want something simple and light. Its 348cc liquid-cooled single makes 34.5 hp and 33 Nm through a six-speed gearbox. With a dry weight of 140 kg, an 865 mm seat and an 11-litre tank, it suits easy off-road touring as well as daily use.

Capacity: 348.0 ccm
Engine: Single, four-stroke
Gearbox: 6-speed
Dry weight: 140.0 kg
Seat height: 865 mm
Power: 34.5 HP (25.7 kW) @ 9500 RPM

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What’s new for the 2025 Beta Alp 4.0

vs the 2024

Spec	2024	2025
Power	34.5 HP (25.7 kW)	34.5 HP (25.7 kW) @ 9500 RPM

Other years 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026

How it rides

Editorial estimate from the spec sheet - not lab tested

Off-road & trail82%

Cornering55%

City riding35%

Daily riding40%

Touring40%

Two-up25%

Track15%

Best for: Designed primarily for trail riding and dual-sport exploration rather than outright speed or highway cruising.
Built for: A light, single-cylinder trail bike with a lively, torquey feel and nimble handling suited to technical terrain and tight trails.
Not ideal for: Not a good fit for riders wanting sustained high-speed highway touring or two-up comfort over long distances.

Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.

Will it fit you?

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Your height

Inseam (optional)

Units

At 865mm, a rider of 68.9" with a 31" (estimated) inseam will reach the ground with tip-toe one foot on the 2025 Beta Alp 4.0, with a cramped knee angle of around 75 degrees and an upright riding position.

Assumes about 30mm of suspension sag once seated. This is an approximation from category-typical geometry, not a measurement of this bike or of you - sit on one before you buy.

More bikes at 821-900 mm — Long Legs →

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Full specifications

Engine

Capacity: 348.0 ccm
Power: 34.5 HP (25.7 kW) @ 9500 RPM
Torque: 33.0 Nm (3.4 kgf-m) @ 7500 RPM
Engine type: Single, four-stroke
Power/weight ratio: 0.2464 HP/kg (dry)
Bore x stroke: 84.5 x 62.0 mm
Compression: 12.3:1
Cooling system: Liquid
Fuel system: Injection
Starting: Electric
Valves per cylinder: 4
Lubrication system: Forced by pump

Transmission

Gearbox: 6-speed
Transmission type: Manual
Final drive: Chain
Clutch: Wet multi-plate

Dimensions & weight

Wheelbase: 1440 mm
Overall length: 2200 mm
Overall width: 820 mm
Overall height: 1220 mm
Seat height: 865 mm
Dry weight: 140.0 kg
Fuel capacity: 11.00 litres
Ground clearance: 275 mm
Reserve fuel capacity: 3.00 litres

Chassis & suspension

Frame: Steel double cradle frame
Front suspension: Hydraulic fork with ø46 mm shaft
Rear suspension: Monoshock with adjustable spring preload
Front wheel travel: 220 mm
Rear wheel travel: 220 mm

Brakes & wheels

Front brakes: Single disc
Front brakes diameter: 260 mm
Rear brakes: Single disc
Rear brakes diameter: 220 mm
Front tyre: 90/90-21
Rear tyre: 130/90-18

Other

Color options: White Pearl, Orange-Gray

Specs last verified against published sources: October 2026.

Compiled from manufacturer documentation and user contributions, corrected on an ongoing basis. Spotted something wrong? Tell us.

What changed, year to year

Differences highlighted

Specification	2004	2010	2015	2021	2025	2026
Capacity	349 cc	349 cc	349 cc	349 cc	348 cc	348 cc
Dry weight	133 kg	133 kg	133 kg	133 kg	140 kg	140 kg
Seat height	870 mm	863 mm	863 mm	863 mm	865 mm	865 mm
Fuel capacity	10.5 L	10.5 L	10.5 L	10.5 L	11 L	11 L