Beta Goes Full Throttle with All-New 2026 RX Motocross Lineup

Italian motorcycle maker Beta has officially unveiled its 2026 RX motocross lineup, adding two all-new 2-stroke machines—the 250 RX and the 350 RX—to stand alongside the updated 450 RX four-stroke. This bold move reflects Beta’s growing presence on the global racing scene, particularly in MXGP and AMA Supercross.



With a focus on “RideAbility,” the new RX range is designed to be easier to ride without compromising on raw performance. From the explosive 250 RX to the versatile new 350 RX and race-proven 450 RX, Beta’s 2026 trio is aimed at riders who demand power, control, and engineering precision.

2026 Beta 250 RX: Light, Loud, and Ready to Rip

The 250 RX is Beta’s answer to riders who crave a nimble, lightweight 2-stroke machine with a high-revving personality. Developed from the ground up, the 250 RX is fitted with a newly engineered engine, revised power valve system, and updated exhaust—all tuned to provide maximum punch in a competitive MX environment.

Engine Displacement	249.30 cc
Frame	Molybdenum steel / Double Cradle w/ quick air filter access
Suspension	KYB Suspension
Transmission	5 Speed
Seat Height	944.88 mm
Kerb Weight	100 kg
Fuel Tank Capacity	5.6 litres
See Full Specs of 2026 Beta 250 RX

2026 Beta 350 RX: Torque Meets Throttle Control

Replacing the older 300cc model, the all-new 350 RX is designed to balance explosive 2-stroke aggression with usable power delivery. With a longer stroke, dual-spark head, and tailored crankcase internals, this bike thrives on tracks of all kinds—whether racing or weekend shredding.

Engine Displacement	351.70 cc
Frame	Molybdenum steel / Double Cradle w/ quick air filter access
Suspension	KYB Suspension
Transmission	5 Speed
Seat Height	944.88 mm
Kerb Weight	100 kg
Fuel Tank Capacity	5.6 litres
See Full Specs of 2026 Beta 350 RX

2026 Beta 450 RX: Evolved Power, Refined Ride

Beta’s flagship four-stroke, the 450 RX, continues to evolve in 2026. Already proven in top-tier MXGP and Supercross competition, this version receives a reworked cylinder head, revised intake manifold, and a quieter yet powerful exhaust system. With improved engine mapping and reduced vibration thanks to a redesigned counterbalancer, the 450 RX is smoother and faster than ever.

Engine Displacement	449.30 cc
Frame	Molybdenum steel / Double Cradle w/ push button seat and quick air filter access
Suspension	KYB Suspension
Transmission	5 Speed
Seat Height	944.88 mm
Kerb Weight	104.5 kg
Fuel Tank Capacity	5.6 litres
See Full Specs of 2026 Beta 450 RX

A Power Trio for Every Rider

From class-legal 250cc entries to versatile 350cc powerhouses and race-proven 450cc thumpers, Beta’s 2026 RX motocross lineup has something for every kind of dirt warrior. Whether you're racing, practicing, or simply carving berms for the thrill, these bikes are built to deliver performance with precision.