All-new engine. Race-bred chassis. Built to compete.
The 2027 Beta RX 250F 4-Stroke marks Beta's entry into the 250cc four-stroke motocross class. Designed and developed from the ground up in Italy, the RX 250F combines a new high-output 249.3cc engine with a dedicated chassis, KYB suspension and advanced electronic rider controls.
At the heart of the RX 250F is an all-new 249.3cc liquid-cooled single-cylinder four-stroke engine featuring DOHC finger-follower valvetrain technology and four titanium valves. The compact powerplant uses a 46mm tapered throttle body with dual fuel injectors, designed to improve air-fuel delivery and provide strong throttle response throughout the rev range.
Beta designed the RX 250F around the specific characteristics of a 250cc four-stroke motocross bike. Its chromoly steel double-cradle frame uses dedicated engine mounting points intended to increase torsional stiffness while maintaining vertical flexibility, helping balance cornering precision, traction and stability.
Engine: 249.3cc liquid-cooled 4-stroke
Bore x Stroke: 78mm x 52.3mm
Compression Ratio: 14.4:1
Valvetrain: DOHC finger followers, 4 titanium valves
Fuel System: EFI, 46mm tapered throttle body, dual injectors
Starting: Electric start
Transmission: 5-speed
Clutch: Wet diaphragm-style
Oil System: Twin oil pumps with separate engine/transmission compartments
Front Suspension: 48mm KYB AOS closed-cartridge fork
Rear Suspension: KYB 50mm shock with linkage
Front Travel: 12.0"
Rear Travel: 11.8"
Front Brake: 260mm floating rotor
Rear Brake: 240mm rotor
Front Wheel: 21"
Rear Wheel: 19"
Tires: Dunlop Geomax MX34
Seat Height: 37.6"
Ground Clearance: 13.4"
Fuel Capacity: 1.85 gallons
Wheelbase: 58.0"
Dry Weight: 222.7 lbs
All-new engine. Race-bred chassis. Built to compete.
The 2027 Beta RX 250F 4-Stroke marks Beta's entry into the 250cc four-stroke motocross class. Designed and developed from the ground up in Italy, the RX 250F combines a new high-output 249.3cc engine with a dedicated chassis, KYB suspension and advanced electronic rider controls.
At the heart of the RX 250F is an all-new 249.3cc liquid-cooled single-cylinder four-stroke engine featuring DOHC finger-follower valvetrain technology and four titanium valves. The compact powerplant uses a 46mm tapered throttle body with dual fuel injectors, designed to improve air-fuel delivery and provide strong throttle response throughout the rev range.
Beta designed the RX 250F around the specific characteristics of a 250cc four-stroke motocross bike. Its chromoly steel double-cradle frame uses dedicated engine mounting points intended to increase torsional stiffness while maintaining vertical flexibility, helping balance cornering precision, traction and stability.
Engine: 249.3cc liquid-cooled 4-stroke
Bore x Stroke: 78mm x 52.3mm
Compression Ratio: 14.4:1
Valvetrain: DOHC finger followers, 4 titanium valves
Fuel System: EFI, 46mm tapered throttle body, dual injectors
Starting: Electric start
Transmission: 5-speed
Clutch: Wet diaphragm-style
Oil System: Twin oil pumps with separate engine/transmission compartments
Front Suspension: 48mm KYB AOS closed-cartridge fork
Rear Suspension: KYB 50mm shock with linkage
Front Travel: 12.0"
Rear Travel: 11.8"
Front Brake: 260mm floating rotor
Rear Brake: 240mm rotor
Front Wheel: 21"
Rear Wheel: 19"
Tires: Dunlop Geomax MX34
Seat Height: 37.6"
Ground Clearance: 13.4"
Fuel Capacity: 1.85 gallons
Wheelbase: 58.0"
Dry Weight: 222.7 lbs