The next press launch is from Beta Bikes:
Beta has added two new motocross fashions to affix the large brother 450 within the RX vary. All-new 250 and 350 RX 2 strokes are the brand new bosses on the town! Beta’s 450 RX has been racing on the world MXGP tour for 4 years and the AMA USA Supercross collection for 2 and has confirmed to be a severe contender. The Italian Beta engineers determined to “Go Large” for 2026 and add not solely a 250 cc bike to race within the correct courses but in addition added a 350 RX smoker as effectively for everybody else! All Beta MX fashions are designed with the trademark RideAbility in thoughts. A bike that’s total simpler to trip.
One other all-new mannequin for 2026 is the smaller brother to the 350, the long-awaited 250 RX! Just like the 350 model, this 2-stroke powered motocross mannequin will attraction to all of these wanting a high-revving, light-weight 250 that may tear up berms with a particular sound that may solely be heard from a Beta. The 250 RX additionally receives new engine instances together with the brand new cylinder, cylinder head, and exhaust. The 250 makes use of a single-spark head. Lastly, a Beta Moto mannequin that may run in lots of 250 courses.
All new for 2026, this new mannequin replaces the 300 model for the 2026 season. New engine instances, bore and stroke, in addition to a twin-plug head to ignite the particular energy solely a big-bore 2-stroke can present. The longer crankshaft, mixed with the ultimate gearing ratio of 13/47, offers a considerable amount of torque and total horsepower that can flip some heads. This new 350 motocrosser will thrive in many various monitor situations. Clearly in a category of its personal!
Confirmed via races all around the world, together with the USA Supercross collection and MXGP. The 450 RX offers a trip like no different, fast turning but secure; highly effective but straightforward to trip, are just some issues the press is saying in regards to the 4-stroke mannequin. An engine with sufficient energy for a top-level professional rider whereas offering the correct amount of energy to the newbie as effectively. For 2026, the 450 RX receives a brand new cylinder head with improved movement that gives much more energy. This, together with a matched consumption manifold and a brand new exhaust, means the 450 will nonetheless bark with energy however do it in a quieter approach. A redesigned counterbalance shaft to scale back vibration and new mapping to go together with the brand new cylinder head and exhaust.
Engine: The 450cc engine improvement was centered on offering riders a big efficiency improve in comparison with the earlier mannequin, providing a stronger torque curve that can be utilized beneath all situations. This achievement was attainable because of a brand new cylinder head with a performance-enhancing piston, a brand new consumption manifold, and a unique exhaust system. The pinnacle’s overhaul – developed via CFD evaluation and plenty of movement bench calibrations – consists of an improved consumption duct to boost air circulation contained in the engine. The brand new manifold, following the movement line, has an extended inside horn to enhance the tuning of stress waves, and thus improve their fill whereas intaking air. The piston consists of new coatings to scale back friction and enhance its efficiency. A newly designed counter balancer was launched to include vibrations and cut back rider fatigue.
Exhaust system: the head-pipe has been redesigned to create a higher movement and to offer elevated energy. This new 4-stroke exhaust system is accomplished by a silencer, redesigned with HGS to include the DB output, consistent with the brand new racing requirements.
Maps: Up to date to carry out higher with the brand new motor configuration, with renewed start-up and limiter methods.
Engine: Each engine capacities obtained a totally new, purpose-built engine. The 350 RX was designed to acquire the best linear energy supply and provides riders the choice to use the good energy accessible when wanted, whereas the 250 RX can rely on explosive efficiency, able to compete in races beneath all situations.
» Head: The primary noticeable distinction when wanting on the new engines is actually the dual-spark-plug head on the RX 350 2Str, whereas the 250cc nonetheless depends on a traditional single spark plug. This differentiates the 2 bikes’ character even additional, with the 250cc offering riders with a high-revving engine that competes with the likes of 250 4Str bikes, whereas the 350cc manages to maintain a higher torque and rounded supply, enhancing its ease of leisure use, at decrease speeds whereas nonetheless offers sufficient total horsepower for race use.
» Cylinder, piston, and energy valve: to additional differentiate the 2 bikes, other than the apparent engine capability, Betamotor engineers labored on new cylinders and pistons, designed particularly for every engine. The ability valve, too, was calibrated precisely to handle the 2 deliveries by adopting totally different springs.
» Crankshaft: the 2 bikes have a unique stroke, with the 250cc reaching 72mm and the 350cc reaching 73.6mm.
» Crankcase: new engine crankcases, with totally different internals between the 2 capacities, matched with every mannequin’s crankshaft.
» Gear field: gear bins are shared between each fashions, with the one distinction being the ultimate ratios of the sprockets, 13/50 for the 250 and 13/47 for its large sister.
Exhaust: additionally new for each fashions. Exhaust programs had been designed to boost the options of each engines, and differ within the inside silencer diameter, which is larger on the 350.
Graphics: a contemporary race look, easy but daring, the ultimate contact to the Italian RX vary.
Radiators: their bearing construction was strengthened to stop any deformation which may have an effect on their operation, even throughout heavy-duty use.
Body: geometry stays unchanged, but the body now incorporates a cast-in brace to additional strengthen the body across the steering neck space. This will increase the reliability and stiffness of the body’s space most topic to emphasize.
Aluminum rear sub-frame and devoted filter field: aluminum provides the appropriate degree of stiffness to the construction. Gentle, but it has the rigidity to beat the calls for of motocross. Entry to the filter stays on the left aspect of the bike, and is extraordinarily straightforward and intuitive, in addition to being tool-free. The push button seat additionally removes with out instruments.
Kayaba (KYB) suspensions: fork (48mm) and single shock (50mm) are particularly calibrated on the brand new vary fashions, specializing in their rideability and stability when the tempo rises. The ensuing setting is sufficient to make any rider assured, from amateurs to professionals.
Nissin braking system: with floating calipers and 260mm Galfer discs on the entrance and 240mm on the rear, for highly effective and modular braking.
Chain: non o-ring, lighter and smoother.
Lithium battery: lighter and a should for fast begins.
Handlebar silent block: Xtrig Flexfit bar mounts present a comfy grip on the handlebar for enhanced management and diminished vibration.
To finish our round-up of the bike:
Engine maps: all of the RX fashions are geared up with two particular engine maps (moist and dry), whereas the 4-Stroke mannequin has additionally 4 ranges of Traction Management (on/off/energetic with onerous map/energetic with smooth map) to handle the automobile’s important energy in all terrain situations. The button to pick out the map and TC is situated on the handlebar bumpers.
All RX might be provided with a triangle stand. As well as, the 4 Stroke has 4 totally different throttle pulleys to customise the accelerator’s response.
