2024 Beta RX 4T 450
In 2023, Beta's project to expand the horizons of RideAbility has officially entered the new dimension of Motocross in Europe, first with the RX 300 two-stroke and now with the king of motocross bikes, the RX 450 four-stroke!
It is officially the first four-stroke motocross bike built by the Italian manufacturer; for enthusiasts of all riding abilities, this translates into the first chance to ride the Beta MX bike closest to the race prototype which has been competing in the MXGP World Championship for the last three years.
A race-ready bike in all respects, designed for Motocross circuits all over the world as has never previously been possible. The design is completely new from the ground up: the frame, engine and components are of the highest level, just like the project behind it: bringing the new horizons of RideAbility to the MX world.
| 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 | 104,5 kg (front 51,4 kg; rear 53,1 kg) |
| Fuel tank capacity | 7,0 I. |
| Reserve | 1,4 I. |
| 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 |
| Type | Single cylinder, 4-stroke, liquid-cooled |
| Bore | 97 mm |
| Stroke | 60,8 mm |
| Displacement | 449,3 CC |
| Compression ratio | 13.5:1 |
| 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 marce |
| Final transmission | chain |
| Engine oil | SAE 10W/50 0,8 I. + SAE 10W/40 0,8 I. |
TECH_DATA_2024_ EN.pdf
Beta Motorcycles Imports Canada Ltd.