The 2018 Beta Evo 300 4T is a four-stroke trials bike offering smooth, tractable power. Its liquid-cooled 297.3cc single makes 19.4 hp through a five-speed gearbox. A 680 mm seat, 71.5 kg dry weight and 2.6-litre tank suit technical trials riding.
Editorial estimate from the spec sheet - not lab tested
Off-road & trail98%
Cornering60%
City riding8%
Daily riding5%
Touring3%
Two-up2%
Track10%
Best for
It exists purely to conquer extreme low-speed technical terrain like rocks, logs, and steep inclines through precise balance and control rather than speed.
Built for
It feels featherlight, incredibly responsive, and almost telepathic in tight technical sections, rewarding finesse over brute force.
Not ideal for
This is not for anyone wanting a comfortable seat, highway capability, passenger carrying, or general road and touring use.
Scores are derived from the spec sheet using the same model across every bike, so they compare like for like.
Full specifications
Engine
Capacity
297.3 ccm
Power
19.4 HP (14.3 kW)
Engine type
Single, four-stroke
Power/weight ratio
0.2713 HP/kg (dry)
Bore x stroke
84.0 x 53.6 mm
Compression
11.0:1
Cooling system
Liquid
Fuel system
Carburettor
Ignition
Electronic
Valves per cylinder
4
Transmission
Gearbox
5-speed
Transmission type
Manual
Final drive
Chain
Clutch
Wet multi-disc clutch
Dimensions & weight
Wheelbase
1305 mm
Overall length
1990 mm
Overall width
850 mm
Overall height
1115 mm
Seat height
680 mm
Dry weight
71.5 kg
Fuel capacity
2.60 litres
Ground clearance
310 mm
Reserve fuel capacity
0.50 litres
Chassis & suspension
Frame
Single wave aluminium beam
Front suspension
Hydraulic fork
Rear suspension
Monoshock
Front wheel travel
165 mm
Rear wheel travel
180 mm
Brakes & wheels
Front brakes
Single disc. 4 piston caliper
Front brakes diameter
185 mm
Rear brakes
Single disc. 2 piston caliper
Rear brakes diameter
150 mm
Front tyre
2.75-21
Rear tyre
4.00-18
Other
Color options
Red/black
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
2010
2013
2016
2018
2021
Capacity
298 cc
297 cc
297 cc
297 cc
297 cc
Dry weight
73 kg
72 kg
72 kg
72 kg
72 kg
Seat height
680 mm
680 mm
680 mm
680 mm
660 mm
Fuel capacity
2.6 L
2.6 L
2.6 L
2.6 L
2.6 L
Illustrative - generated automatically by diffing the year records already on file, not a manufacturer-published changelog.
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