
THE NEW BETA RX RANGE 2027!
2027 BETA RX
Beta RX 350 2T MY27
THE NEW BETA RX RANGE 2027!
TBC
- •The perfect embodiment of the RideAbility philosophy applied to the largest displacement in two-stroke motocross engines. The RX 350 2T stands out clearly from traditional race-ready bikes, offering an incredibly smooth, linear and usable power delivery, ideal for riders seeking a relaxed yet effective riding experience based on long gear ratios and constant traction. With the updates introduced in MY27, this model increases its raw power and refines its structural strength, establishing itself as an absolute engineering benchmark within Betamotor’s cross line-up.
Motocross
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Tech Specs
Beta RX 350 2-Stroke
Technical Specifications
Chassis
| Specification | Value |
|---|---|
| Frame | Molybdenum steel with double cradle split above the exhaust port |
| Wheelbase | 1482 mm |
| Max Length | 2177 mm |
| Max Width | 830 mm |
| Max Height | 1260 mm |
| Seat Height | 945 mm |
| Ground Clearance | 340 mm |
| Footrest Height | 422 mm |
| Dry Weight | 100.0 kg (front 48 kg; rear 52 kg) |
| Fuel Tank Capacity | 7.0 l |
| Cooling System Capacity | 1.3 l |
| Front Suspension | Kayaba sealed hydraulic cartridge front fork ø 48 mm fork tubes |
| Rear Suspension | Kayaba Monoshock with progressive compound lever ø50 |
| Shock Absorber Stroke | 133 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 |
Engine
| Specification | Value |
|---|---|
| Type | Single cylinder, 2-stroke, liquid-cooled |
| Bore | 78 mm |
| Stroke | 73.6 mm |
| Displacement | 351.7 cc |
| Compression Ratio | 12.45:1 |
| Exhaust Valve | BPV System |
| Starter | Electric starter |
| Ignition | AC Kokusan – digital CDI |
| Spark Plug | 2x MR7CI8 |
| Induction System | Induction reed |
| Lubrication | Mixing |
| Carburettor | Keihin PWK 38 |
| Clutch | Wet multi-disc clutch |
| Primary Drive | Z.27/72 |
| Transmission | 5 gears |
| Final Transmission | Chain |
| Engine Oil | SAE 10W/50 |Claude Opus 4.8 works best with the latest desktop app. Update now.
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