BETA SM SPORT 50 2-Stroke Motorcycle 2026

Motorcycle BETA SM SPORT 50 2-Stroke 2026.

The Beta RR Motard 2-Stroke 50 Sport stands as the benchmark in the 50cc segment for those seeking a supermotard with a racing DNA. This 2025 model introduces a new frame with a double cradle and revised geometry, as well as a longer swingarm, which drastically improves stability and traction when cornering. Its single-cylinder 2-Stroke Minarelli AM6 engine includes a selector with forged forks, ensuring a much more precise and responsive 6-speed gear change.

The exhaust system has been completely redesigned to comply with the Euro 5 standard, optimising the recovery of petrol vapours and the flow of gases without sacrificing performance. Choosing or replacing this Sport model is essential if you are looking for a superior cycle component, as it features a 40 mm fork and a front brake caliper with double piston on a 260 mm disc, preventing mechanical fatigue during demanding braking and improving active safety compared to the standard version.

Key Information

• Engine: Single-cylinder 2-Stroke 49.7cc with liquid cooling.
• Carburettor: Dell’Orto PHBN 16 HS with automatic mixing system.
• Front Suspension: 40 mm diameter fork specific to the Sport version.
• Braking System: Front disc of 260 mm and rear of 220 mm with high-power caliper.
• Transmission: 6-speed gearbox with multi-disc clutch in oil bath.
• Frame: Double cradle steel frame in racing red with technical polymer subframe.
• Wheels: Lightweight alloy wheels of 17 inches with Motard design.
• Capacity: Fuel tank of 6.5 litres.

Technical Features

FRAME

• Structure: double cradle steel frame
• Wheelbase: 1417 mm
• Maximum length: 2035 mm
• Maximum width: 790 mm
• Maximum height: 1155 mm

ENGINE

• Type: Single-cylinder, 2-Stroke, liquid cooled
• Bore: 40.3 mm
• Stroke: 39 mm
• Displacement: 49.7 cc
• Compression ratio: 12:1
• Starting: Pedal (Kick)
• Spark plug: NGK BR9 ES
• Lubrication: Mixture with mechanical pump, fuel at 1.5% (with synthetic oil)
• Fuel supply: carburettor
• Carburettor: Dell’Orto PHBN 16 HS
• Clutch: multi-disc clutch in oil bath
• Primary transmission: Z. 20/71
• Transmission: 6 speeds
• Secondary transmission: Z. 11/50
• Engine oil: SAE 20W/30 (820cc)