17 May. Sunday 2026
Rx 4t 450 - 2025 Specifications and Reviews
The 2025 Beta RX 4T 450 is a lightweight trials motorcycle engineered for serious off-road enthusiasts seeking precision and maneuverability on technical terrain. Its compact dimensions, minimal ground clearance of 330mm, and progressive monoshock suspension deliver exceptional control and responsiveness. Built for dedicated trials riders, it excels in navigating obstacles and demanding natural landscapes with agility and finesse.
2025
General information | |
| Color Options | Blue/red/white |
| Category | Cross / motocross |
| Model | Beta RX 4T 450 |
| | |
Engine and Transmission Specifications | |
| Starting | Electric |
| Clutch | Wet multi-disc |
| Final Drive | Chain (final drive) |
| Gearbox | 5-speed |
| Cooling System | Liquid |
| Ignition | Kokusan. |
| Fuel Control | Double Overhead Cams/Twin Cam (DOHC) |
| Induction | Injection. Elldor electronic injection, 46mm |
| Valves Per Cylinder | 4 |
| Bore x Stroke | 97.0 x 60.8 mm (3.8 x 2.4 inches) |
| Compression Ratio | 13.5:1 |
| Engine Details | Titanium valves |
| Capacity | 449.3 ccm (27.42 cubic inches) |
Physical measures and capacities | |
| Fuel Capacity | 7.00 litres (1.85 US gallons) |
| Wheelbase | 1485 mm (58.5 inches) |
| Ground Clearance | 330 mm (13.0 inches) |
| Overall Width | 825 mm (32.5 inches) |
| Overall Length | 2170 mm (85.4 inches) |
| Overall Height | 1270 mm (50.0 inches) |
| Seat Height | 945 mm (37.2 inches) If adjustable, lowest setting. |
| Dry Weight | 104.5 kg (230.4 pounds) |
Rx 4t 450 dimensions and frame | |
| Wheels | Wire spoked with blue rims. |
| Rear Brakes | Single disc. Single-piston floating caliper. Wave disc. |
| Brake Disc Diameter | 240 mm (9.4 inches) |
| Front Brakes | Single disc. Double-piston floating caliper. Wave disc. |
| Rear Tyre | 110/90-19 |
| Front Tyre | 80/100-21 |
| Rear Wheel Travel | 305 mm (12.0 inches) |
| Rear Suspension | Monoshock with progressive compound lever |
| Front Wheel Travel | 305 mm (12.0 inches) |
| Front Suspension | Hydraulic USD close cartridge fork |
| Frame | Molybdenum steel with double cradle split above the exhaust port |
| | |
Other specs | |
| Related bikes | List related bikes for comparison of specs. |
| Ask questions | Join the 25 Beta RX 4T 450 discussion group or the general Beta discussion group. |
| Maintenance | Find parts, fluids. filters, maintenance tools and service manuals at Amazon.com. |
| Insurance costs | Compare US insurance quotes from the nation's top providers. |
| Fork tube size | 48 mm (1.9 inches) |
| Spark plugs | NGK LKAR 8A-9 |
| Coolant | 1.00 litres (0.26 US gallons) |
| Engine oil | SAE 10W/45 |
| Update specs | Report missing specs or required updates. |
| Lubrication system | 2 oil pumps |
| Engine type | Single cylinder, four-stroke |
| Year | 2025 |
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