14 August. Friday 2026
Beta Evo Factory 4T 300 - 2021 Specifications and Reviews
The 2021 Beta Evo Factory 4T 300 is a competition trial motorcycle engineered for serious enthusiasts and professional riders seeking precision and control. Its 297cc liquid-cooled four-stroke engine delivers smooth, manageable power ideal for navigating technical terrain and obstacles. This machine excels in competitive trial events where finesse and lightweight agility are paramount.
2021
General information | |
| Category | Trial |
| Year | 2021 |
| Model | Beta Evo Factory 4T 300 |
Engine and Transmission Specifications | |
| Clutch | Wet multi-disc clutch with cush-drive rubber |
| Transmission type | Chain (final drive) |
| Gearbox | 6-speed |
| Cooling system | Liquid |
| Lubrication system | 1.5% oil mixture |
| Fuel system | Carburettor. Keihin PWK ø 28mm |
| Bore x Stroke | 84.0 x 53.6 mm (3.3 x 2.1 inches) |
| Compression | 11.1:1 |
| Engine details | Lamellar induction in the crankcase |
| Engine type | Single cylinder, four-stroke |
| Capacity: | 297.3 ccm (18.14 cubic inches) |
Brakes, suspension, Frame and wheels | |
| Wheels | MIchelin x-light |
| Rear brakes | Single disc. Two-piston calipers. |
| Diameter | 185 mm (7.3 inches) |
| Front brakes | Single disc. Four-piston calipers. |
| Rear tire | 4.00-18 |
| Front tire | 2.75-21 |
| Rear wheel travel | 180 mm (7.1 inches) |
| Rear Suspension | Coaxial tank and compression and rebound adjustment |
| Front wheel travel | 165 mm (6.5 inches) |
| Front Suspension | Hydraulic fork with ø38 mm |
| Frame type | Hydroformed Alloy |
| | |
Physical measures and capacities | |
| Reserve fuel capacity | 0.50 litres (0.13 US gallons) |
| Fuel capacity | 2.80 litres (0.74 US gallons) |
| Wheelbase | 1305 mm (51.4 inches) |
| Ground clearance | 310 mm (12.2 inches) |
| Overall width | 850 mm (33.5 inches) |
| Overall length | 1990 mm (78.3 inches) |
| Overall height | 1115 mm (43.9 inches) |
| Seat height | 660 mm (26.0 inches) If adjustable, lowest setting. |
| | |
Other specs | |
| Maintenance | Find parts, fluids, filters, maintenance tools and service items on eBay |
| Color options | Red/White/Blue |
Performance Profile & Rider Fit
Best For
Track5%
City10%
Cornering40%
Daily Riding5%
Touring3%
Passenger0%
Rider Profile
| Best For | This is a specialist competition trial bike best suited to riders with prior off-road or trials experience, though skilled beginners can learn on it under guidance. |
| Purpose | Built purely for technical trials riding, tackling obstacles, rocks, logs, and steep terrain at very low speeds rather than for any kind of straight-line performance. |
| Rider Fit | Its extremely light weight and low seat height make it accessible to a wide range of body sizes, but trials riding demands strong balance, core strength, and standing endurance. |
| Character | A featherweight, highly responsive machine with instant low-end torque delivery designed for precise throttle and clutch control rather than outright speed. |
| Not Ideal For | This is not the bike for anyone wanting a comfortable commuter, a highway tourer, or a passenger-carrying machine, as it lacks a seat, mirrors, lights, and any touring capacity. |
Character map is an editorial estimate based on this bike's specifications, not a lab-tested measurement.
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Rider Reviews
Total comments: 1
MotorcycleDB Review
The 2021 Beta Evo Factory 4T 300 is a top-of-the-line trials motorcycle that offers impressive performance and handling. With its 300cc 4-stroke engine, this bike delivers smooth and consistent power, making it ideal for tackling challenging off-road terrain. The Factory 4T 300 also features a lightweight and agile chassis, allowing riders to easily maneuver through obstacles and tight turns. Additionally, the bike is equipped with high-quality components such as a hydraulic clutch, aluminum handlebars, and a fully adjustable suspension system, providing riders with a comfortable and responsive riding experience. Overall, the 2021 Beta Evo Factory 4T 300 is a fantastic choice for riders looking for a high-performance trials motorcycle. Its powerful engine, lightweight chassis, and premium components make it a standout option in the market. Whether you're a seasoned competitor or a casual off-road enthusiast, this bike is sure to impress with its impressive capabilities and fine-tuned handling.Add a Comment
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