RX Motocross Range
The Beta RX range is built for one purpose — motocross, pure and simple. No compromises for road use, no distractions — just lightweight, aggressive machines designed to perform on the track.
Available in both 2-stroke (RX 250 & RX 350) and 4-stroke (RX 450) platforms, the RX lineup brings Beta’s race-proven engineering into a dedicated motocross package. Sharp chassis geometry, responsive power delivery, and a premium KYB suspension setup combine to deliver precise handling, strong bottom-out resistance, and the control needed to push harder, lap after lap.
The 2-stroke models run premix by design, giving riders full control over fuel ratio and engine response — a preferred setup for those who want to dial in performance to suit their riding style and track conditions. The 4-stroke RX 450 delivers strong, tractable power with a broad spread of torque, making it incredibly effective across a wide range of track conditions.
Developed through Beta’s growing presence in international motocross competition, the RX range is focused, capable, and built to be ridden aggressively.
This is Beta at full attack — built for the gate drop, not the road.
RX 250 2T
Explosive, high-revving, and race-focused.
The RX 250 is built to compete in MX2-style conditions, delivering a sharp, aggressive powerband that rewards riders who like to stay on the pipe. It’s the most “racey” of the 2-strokes — light, responsive, and designed to be pushed.
Key Features
- All-new 250cc 2-stroke engine
- High-revving, explosive power delivery
- Single spark plug head (sharper, more aggressive character)
- Purpose-built motocross chassis with reinforced frame
- KYB 48mm closed-cartridge forks + KYB shock
- Lightweight aluminium subframe
- Dual engine maps (wet/dry)
- Wet weight: ~100 kg class
- Fuel capacity: ~7L
- Wheel size: 21” front / 19” rear
- Chromoly steel frame with reinforced steering head
- Aluminium subframe for strength + weight reduction
- Tool-free air filter access + quick-release seat
- Dual engine maps (wet/dry) on all models
- Premix 2-strokes (rider-controlled fuel setup)
- Lightweight, race-ready ergonomics
- Suspension travel: ~300mm front & rear
Best for: MX2 racing, aggressive riders, riders who like to rev
RX 350 2T
Big torque, smoother delivery — the wildcard.
The RX 350 is a unique offering — combining 2-stroke simplicity with a broader, more 4-stroke-like power delivery. It’s designed to be easier to ride fast, with strong torque and a more linear feel.
Key Features
- 351.7cc 2-stroke engine
- Dual-spark plug head for smoother, more complete combustion
- Longer stroke crankshaft for added torque
- Linear, tractable power delivery (less aggressive than 250)
- KYB 48mm fork + KYB shock tuned for stability and traction
- Reinforced radiators and race-ready cooling system
- Displacement: 351.7cc
- Wheelbase: 1482 mm
- Seat height: 945 mm
- Ground clearance: 340 mm
- Dry weight: ~100 kg
- Suspension travel: 305 mm front / 300 mm rear
- Chromoly steel frame with reinforced steering head
- Aluminium subframe for strength + weight reduction
- Tool-free air filter access + quick-release seat
- Dual engine maps (wet/dry) on all models
- Premix 2-strokes (rider-controlled fuel setup)
- Lightweight, race-ready ergonomics
Best for: riders wanting torque without 4T weight, varied track conditions, “ride fast with less effort”
RX 450 4T
Factory DNA, full motocross performance.
The RX 450 is Beta’s flagship motocross machine — developed directly from their MXGP and Supercross race programs. It delivers strong, usable power with modern electronics to help manage it.
Key Features
- 450cc 4-stroke engine with upgraded cylinder head and piston
- Improved intake and exhaust flow for stronger torque curve
- Traction control (multiple levels) + engine maps
- KYB suspension tuned for high-speed stability
- Redesigned exhaust system for performance and compliance
- Counterbalancer to reduce vibration and rider fatigue
- Class: 450cc MX1
- Fuel capacity: ~7L
- Seat height: ~940–950 mm range
- Wet weight: ~105 kg class
- Chromoly steel frame with reinforced steering head
- Aluminium subframe for strength + weight reduction
- Tool-free air filter access + quick-release seat
- Dual engine maps (wet/dry) on all models
- Premix 2-strokes (rider-controlled fuel setup)
- Lightweight, race-ready ergonomics
Best for: MX1 racing, experienced riders, high-speed tracks, riders who want torque and stability
