14 August. Friday 2026
Beta Alp 4.0 - 2006 Specifications and Reviews
The 2006 Beta Alp 4.0 is a lightweight 349cc trial motorcycle designed for both beginners and experienced riders tackling technical terrain. Its compact frame and air-cooled four-stroke engine deliver agile handling and reliability across challenging off-road conditions. The bike is renowned for its approachable nature and proven durability in trial competition.
General information | |
| Category | Trial |
| Year | 2006 |
| Model | Beta Alp 4.0 |
Engine and Transmission Specifications | |
| Gearbox | 6-speed |
| Cooling system | Air |
| Lubrication system | Fuel mix 1.5% |
| Valves per cylinder | 4 |
| Fuel system | Carburettor. Mikuni BST 33 |
| Bore x stroke | 79.0 x 71.2 mm (3.1 x 2.8 inches) |
| Compression | 9.5:1 |
| Stroke | 4 |
| Engine type | Single cylinder |
| Capacity: | 349.00 ccm (21.30 cubic inches) |
| | |
Physical measures and capacities | |
| Wheelbase | 1,410 mm (55.5 inches) |
| Ground clearance | 300 mm (11.8 inches) |
| Overall length | 2,185 mm (86.0 inches) |
| Dry weight | 133.0 kg (293.2 pounds) |
Beta Alp 4.0 dimensions and frame | |
| Rear brakes diameter | 220 mm (8.7 inches) |
| Rear brakes | Single disc |
| Front brakes diameter | 260 mm (10.2 inches) |
| Front brakes | Single disc |
| Rear suspension travel | 220 mm (8.7 inches) |
| Rear suspension | Monoshock |
| Front suspension travel | 220 mm (8.7 inches) |
| Front suspension | Hydraulic fork |
| Frame type | Steel |
Speed and acceleration | |
| Reserve fuel capacity | 3.00 litres (0.79 gallons) |
| Fuel capacity | 10.50 litres (2.77 gallons) |
Other specs | |
| Maintenance | Find parts, fluids, filters, maintenance tools and service items on eBay |
Performance Profile & Rider Fit
Best For
Track15%
City35%
Cornering55%
Daily Riding40%
Touring40%
Passenger25%
Rider Profile
| Best For | Best suited to riders with at least some off-road or dual-sport experience, given the tall seat height and dirt-oriented ergonomics. |
| Purpose | Designed primarily for trail riding and dual-sport exploration rather than outright speed or highway cruising. |
| Rider Fit | The tall 35.8 inch seat height and narrow perimeter-frame stance favor taller or more confident riders who can comfortably handle the bike standing or at a stop. |
| Character | 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. |
Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.
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