Beta RX 450 Motocross 2025

CHASSI

Frame: Molybdenum steel with double cradle split above the exhaust port
Wheelbase: 1485 mm
Max length: 2170 mm
Max width: 825 mm
Max height: 1270 mm
Seat height: 945 mm
Ground clearance: 330 mm
Footrest height: 410 mm
Dry weight: 100 kg (front 48 kg; rear 52 kg)
Fuel tank capacity: 7,0 l.
Reserve: 1,4 l.
Front suspension: Kayaba Hydraulic USD fork with ø48 mm shaft
Rear suspension: Kayaba Monoshock with progressive compound lever
Shock absorber stroke: 135 mm
Front wheel travel: 305 mm
Rear wheel travel: 300 mm
Front brake: Wave disc ø260 mm and double-piston floating caliper
Rear brake: wave disc ø240 mm and single-piston floating caliper
Front rim: 21 x 1,6 – 36 holes
Rear rim: 19 x 2,15 – 36 holes
Front tyre: 80/100 – 21
Rear tyre: 110/90 -19

MOTOR

Type: Single cylinder, 4-stroke, liquid-cooled
Bore: 97 mm
Stroke: 60,8 mm
Displacement: 449,3 cc
Compression ratio: 13,5
Valve train: DOHC finger follower / 4 valve, intake titanium, exhaust steel
Starter: Electric starter
ACG: Kokusan
Spark plug: NGK LKAR 8A-9
Lubrication: 2 oil pumps
Fuel system: Elldor electronic injection
Throttle body: Ø 46 mm
Clutch: wet multi-disc clutch
Primary drive: Z.31/72
Transmission: 5 gears
Final transmission: chain
Engine oil: SAE 10W/50 0,8 l. + SAE 10W/40 0,8 l.