Are the Italians heralding a new era and perhaps even shifting the bench mark in this segment? Who would have thought that the Florence motorcycle manufacturer would throw itself so enthusiastically into the motocross market. But now the time has come and after years of waiting, the official MX2 weapon with 4-strokes and 250 cubic centimeters of displacement is finally in the starting blocks, complementing the 250/350 two-stroke and the large 450 thunderbolt. And not only for factory and semi-factory drivers, but also for you.
The Enduro faction should already be hot about when there will be a comparable product for the E2 class with homologation, which will certainly require some patience. Step-by-step is the motto of the Italian family business Betamotor, and the consistency and success even in economically difficult times prove them right.
This is not an almost 1:1 copy of its big sister RX 450, but an independent development, with unchanged Tuscan construction philosophy. In plain language, this means: Easy to use for everyone, but blessed with a powerful performance. Beta refers to this philosophy as RideAbility.
Default: MX2 dominance – here are the desired attributes!
- Powerful but progressive power delivery
- High traction
- Very good handling
- Best power metering
- Precise rideability
- Constant usability in all conditions
Technical highlights
- New engine development
- Two overhead camshafts
- Right-hand timing chain (RX 450 left)
- Low-noise Morse timing chain
- Hydraulic timing chain tensioner to reduce vibration and noise
- Compact engine dimensions
- 1.5 kg lighter than the 250 competitors
- Engine housing made of special aluminium die-casting process and extremely low wall without compromising strength
- Engine housing partly made of magnesium alloy, as well as the cylinder head cover
- Electronic double injection system (throttle body & the nozzle in between to the airbox)
- Perfect air-fuel flow range over the entire speed range
- Improved response at low revs
- Powerful torque in high rev ranges
- External high maximum speed
- Specially forged steel crankshaft, ball bearings
- Connecting rod made from the solid with plain bearing on the upper connecting rod eye
- Racing piston in box-in-box design for maximum stability and reduced friction
- RX 450 gearbox and clutch base
- 7 pad and 6 steel discs
- Clutch hydraulically operated
- Newly developed five-speed gearbox
- Cooling system developed using CFD (Computational Fluid Dynamics, German computational fluid dynamics) analysis
- Left-hand starter
- Dry sump lubrication
- An oil circuit for engine and transmission
- Launch Control (5-stage)
- Quickshifter
- Traction control (2-stage)
- Mapping switch (2-stage)
- New switch unit for the assistance systems
- Newly developed frame with side cylinder head holders (RX 450 central) to increase torsional rigidity while maintaining the necessary
- egree of flex.
- Silentblock handlebar mounts (+5mm higher)
- 48mm Kayaba fork
- 50mm Kayaba shock absorber
- Bolt-on alloy rear
- Nissin brake system (260 / 240 mm)
- Reduced rim width on the rear wheel to reduce mass and increase agility
- Dry weight: 101 kg
- Scope of delivery: Four different throttle grips with different gear ratios, MX stand
With this, the Italians have stepped on the gas to the maximum and present a truly highly exciting model range for MX racing: RX 450-250 4T & RX 250-350 2T.
In addition to the completely new development of an RX 250 4T, they have also managed to optimize the sister models. Here are the new features:
RX 450 4T
- Quickshifter
- Launch Control
- Traction control, optimized maps for more refined and progressive intervention
- New control panel for the assistance systems
- New throttle body interior design for optimized gas flow
- More direct engine response
- Power delivery more linear and more controllable
RX 250/350 2T
- Redesigned piston (350)
- Power increase: 1.5 hp (350)
- Changed secondary gear ratio (250): From 13/50 to 14/52
- Optimized silencer internals to increase durability
- Dunlop MX tires on 2T and 4T
- New handlebar pad design with integrated mapping switch
Cross-model innovations:
- More resistant chain guide
- Sprocket guard with improved function
- Softer rubbers
- New graphics and colors
TECH SPECS
Availability
- RX 450 4T mid-June 2026
- RX 250 4T July 2026
- RX 250 2T July 2026
- RX 350 2T July 2026
Prices 2027 – Germany
- RX 450 4T as soon as available (2026: 9,990 euros)
- RX 250 4T as soon as available
- RX 250 2T as soon as available (2026: 8,690 euros)
- RX 350 2T as soon as available (2026: 8,990 euros)
GALLERY
Source / Pictures: Betamotor
