2019 Beta Motorcycles EVO 4T

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Beta Motorcycles



Evolution in action

Beta launches the new EVO MY 2019 into the market.

The Tuscany-based bike builder's engineers have completed an intense development and technical refinement program to give the new Evo an even higher performance and reliability while increasing the fun factor and rideability.

The new Trial range incorporates all the race know-how built up by the Beta Factory Team (which, this year, has two top riders, Albert Cabestany and James Dabill), ensuring all riders, non-professional and professional alike, can count on the best available technology.

There are four 2-stroke engines: 125, 250, 300 and 300 SS where “SS” stands for Super Smooth, a Trial bike with a decidedly softer, more fun-oriented character than its more aggressive counterparts.

The world renowned 4-stroke version, is available in a 300 cc displacement and offers a sound alternative to the 2-stroke versions thanks to user-friendly engine power delivery which is welcomed by clubman riders and experts alike.

Evo 4T

The 300 4T (4-stroke) engine has also been upgraded. One of the most important new features is a new throttle with a redesigned internal ramp that gives better low-rev power control. Like the 2-strokes, the 4-stroke inherits the new CDI control unit with new, dedicated mapping.

Much of the attention was directed at the chassis set-up, with a series of new features on both the 2-stroke and 4-stroke models: New shock absorber port geometry: now higher and more progressive; New shock absorber piston: increased suspension sensitivity and progression. Together with the modified plug geometry, the new piston generates decidedly more grip, making it more forgiving in the event of rider error; New pump on mechanical side of fork: ensures more progressive impact absorption; New fork oil: improves stability at high temperatures, maximizing smoothness; Renewed chain tensioner: adjustment range now wider while making adjustments easier; Rear brake caliper with brake pad anti-vibration system: maximizes precision and significantly reducing noise; New graphics and colors

Engine Specifications
  • Type: Single-cylinder, 4-stroke, 4 valves, liquid cooled
  • Bore: 84 mm
  • Stroke: 53.6 mm
  • Displacement: 297.3cc
  • Compression ratio: 11.0:1
  • Ignition: Electronic
  • Spark plug: NGK MR7BI-8
  • Feeding: with carburettor
  • Carburettor: Mikuni
  • Spark advance: Variable
  • Clutch: Wet multi-disc clutch
  • Primary trasmission: Z. 18/63
  • Transmission: 5 speed
  • Secondary trasmission: chain
  • Engine oil: SAE 15W/50 (900 cc)
  • Consumption l/100 km: 3.3 L/100 km
  • Pollution Co2 [g/km]: 77 g/km
Chassis Specifications
  • Frame: Single wave aluminium beam
  • Wheel base: 1305 mm
  • Max length: 1990 mm
  • Max width: 850 mm
  • Max height: 1115 mm
  • Seat height: 660 mm
  • Ground clearance: 310 mm
  • Footrest height: 348 mm
  • Fuel tank capacity: 2.8 L
  • Reserve: 0.5 L
  • Cooling system capacity: 600 cc
  • Front suspension: Hydraulic fork with ø38 mm shaft
  • Rear suspension: Monoshock
  • Shock absorber stroke: 60 mm
  • Front wheel travel: 165 mm
  • Rear wheel travel: 180 mm
  • Front brake: disc ø185 mm with 4 piston caliper
  • Rear brake: disc ø160 mm with 2 piston caliper
  • Front rim: 21 x 1.6 - 32 holes
  • Rear rim: 18 x 2.15 - 32 holes
  • Front tyre: 2.75 - 21
  • Rear tyre: 4.00 R 18



Engine Type
Single-cylinder, 4-stroke, 4 valves
Bore and Stroke
84 x 53.6 mm
Compression Ratio
Fuel System


Front Suspension
Hydraulic fork with ø38 mm shaft
Front Brakes
Disc ø185 mm with 4 piston caliper
Front Tire
2.75 - 21
Rear Suspension
Rear Brakes
Disc ø160 mm with 2 piston caliper
Rear Tire
4.00 R 18


Fuel Capacity
2.8 L
1305 mm
Ground Clearance
310 mm
Seat Height
660 mm


5 speed
Final Drive

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