Name: Beta RX 350 2027
Brand: Beta
Price: 8494.99 GBP
Availability: InStock

Beta RX 350 2027

£8,494.99

Beta RX 350 2027

£8,494.99

350 RX: New engine cases, bore and stroke, as well as a twin-plug head to ignite the special power only a big-bore 2-stroke can provide. The longer crankshaft, combined with the final gearing ratio of 14/47, provides a large amount of torque and overall horsepower that will turn some heads. This 350 motocrosser will thrive in many different track conditions. Clearly in a class of its own!

The 2-stroke range of motocross models also have been refined with updates to the following:

-A new piston for the 350 that saves weight as well as reduces friction, resulting in a 1.5 hp gain.

-Updated final gearing for the 250 to improve starts.

-New muffler that is stronger than the prior model

-Dunlop MX 34 tires

With more torque, increased horsepower, and a refined chassis setup, the 350 RX doesn't just compete—it defines a new standard for what a big-bore two-stroke is capable of achieving.

Handlebar silent block: Xtrig Flexfit bar mounts provide a comfortable grip on the handlebar for enhanced control and reduced vibration.

Lithium battery: lighter and a must for quick starts.

Chain: non o-ring, lighter and smoother.

Nissin braking system: with floating callipers and 260mm Galfer discs at the front and 240mm at the rear, for powerful and modular braking.

Kayaba suspensions: fork (48mm) and single shock (50mm) are specifically calibrated on the new range models, focusing on their rideability and stability when the pace rises. The resulting setting is enough to make any rider confident, from amateurs to professionals.

Aluminium rear sub-frame and dedicated filter box: aluminium gives the right level of stiffness to the structure. Light, yet has the rigidity to overcome the demands of motocross. Access to the filter remains on the left side of the bike, and is extremely easy and intuitive, as well as being tool free. The push button seat also removes without tools.

Frame: geometry remains unchanged, yet the frame now incorporates a cast-in brace to further strengthen the frame around the steering neck area. This increases the reliability and stiffness of the frame’s area most subject to stress.

Radiators: their bearing structure was strengthened to prevent any deformation that might affect their operation, even during heavy-duty use.

Graphics: a modern race look, simple yet bold, the final touch to the Italian RX range.

Exhaust: also new for both models. Exhaust systems were designed to enhance the features of both engines, and differ in the internal silencer diameter, which is bigger on the 350.

Gear box: gear boxes are shared between both models with the only difference being the final ratios of the sprockets, 13/50 for the 250 and a 13/47 for its big sister.

Crankcase: new engine crankcases, with different internals between the two capacities, matched with each models’ crankshaft.

Crankshaft: the two motorcycles have a different stroke, with the 250cc reaching 72mm and the 350cc reaching 73.6mm.

Cylinder, piston and power valve: to further differentiate the two bikes – apart from the obvious engine capacity – Betamotor engineers worked on new cylinders and pistons, designed specifically for each engine. The power valve too was calibrated accurately to manage the two deliveries, by adopting different springs.

Engine: both engine capacities received completely new, purpose-built engines. The RX 350 2Str was designed to obtain the greatest linear power delivery and give riders the option to exploit the great power available when needed, while the RX 250 2Str can count on explosive performance, ready to compete in races under all conditions.

Head: The first noticeable difference when looking at the new engines is certainly the dual- spark-plug head on the RX 350 2Str, while the 250cc still relies on a classic single spark plug. This differentiates the two motorcycles’ character even further, with the 250cc providing riders with a high-revving engine that competes with the likes of 250 4Str bikes, while the 350cc manages to keep a greater torque and rounded delivery, enhancing its ease of recreational use, at lower speeds while still provides enough overall horsepower for race use.