My24 Beta Rx 300 2 Stroke
MY24 Beta RX 300 2 Stroke

Beta’s project to expand the horizons of Rideability enters a new dimension – Motocross! 

It is the first modern motocross bike built by the Italian manufacturer since the early 1980’s, representing the first chance in Europe for enthusiasts to ride a Beta Motocross bike, after its debut in the MXGP World Championship three years ago.

We are talking about Beta RX 300 2T, the new frontier of Rideability in the World of MX.

What does Rideability mean for Beta? It means allowing every rider of a Beta bike to have a simultaneously easy-to-ride yet high-performance bike, a top-level performer, yet friendly, fun, and never too demanding.

Today, for the first time, Beta is taking this concept to modern Motocross.

RX 300 2T is a bike that launched as an exclusive motocross bike for the US market in 2021, as well as in Australia in limited numbers but is completely new for the European market.

The success of this project, aided by the ever-growing experience accumulated in the race field in the MXGP World Championship with the 450 4T, have led the Tuscan brand to open the throttle on the evolution of the bike which today is configured as a fully-fledged motocross bike.

This limited production model will be produced for the first time outside the US & Australia, making the RX 300 2T a unique opportunity to add this bike to your garage, a model which for Beta marks the return to the motocross market and which will open the way for a new range of totally new models arriving soon.

The RX 300 2T is a unique bike in its class, the perfect combination of power and control, and born with a racing spirit due to it being dedicated to the race track. It still features the ease of use typical of the Betamotor family, however, fully focused on fun without compromises.

The all-new RX 300 was designed for the moto-minded rider looking for the style and performance that can only come from Beta of Italy. The “factory bike sound” coming from the muffler sets this model apart from the rest of the brands on the track. Many of the Beta engineers come from a motocross background which allows them to exercise their talents.

Engine: The engine of the RX 300 offers a high level of performance, especially in the mid-range and top end of the power delivery, yet still providing excellent torque, thus offering an enjoyable and progressive ride which is always under control, focusing on the concept of rideability in all situations.The main characteristic details of the RX 300 2T are as follows: 

Cylinder: Bore and x Stroke of 72.0 x 72.0 mm.

Piston: dual-ring design and matched perfectly to the RX cylinder porting.

Carburettor: Keihin PWK 38 mm.

Dedicated spark plug: NGK BR8ECM.

Crankshaft: this component has been lightened with a reduced diameter married to the engine main cases, exclusive to the RX to provide faster acceleration at higher engine speeds.

Exhaust valve: an adjustable valve giving you the ability to change the power delivery to suit your needs, providing excellent tunability for riders of all abilities.

Short silencer: to favour performance at medium-high engine speeds.

Hydraulic Clutch with diaphragm spring: provides a smooth operation, easy pull and resistant to overheating. The spring preload for the clutch can be set to three positions which changes the progression of the clutch, by adjusting a dedicated ring inside the clutch cover.

Cooling hoses: high-performance blue silicone hoses that match the new graphics.

MAP Switch: two-positions that provide the rider with two different engine power deliveries. This system is independent of the adjustable power valve providing the rider with an amazing amount of engine power adjustability.

Exhaust: special plated exhaust for a beautiful look and low maintenance after each ride.

Fork and shock: are Kayaba (KYB). This suspension package is exclusive to the RX model. Beta engineers worked closely with Kayaba to develop the perfect settings based on the overall RX model’s geometry. The goal was to provide a package stiff enough for the big hits yet supple and soft over the chop that many motocross tracks develop.

Blue anodised wheels: 21” at the front and 19” at the rear, with 80/100-21 and 120/80-19 Michelin Starcross 6 tyres, while the braking system is by Nissin with floating callipers and a 260mm disc on the front and 240mm at the rear. 

Electric Start: fires to life at the push of a button, matched to the light weight of a lithium battery will make your friends kick starting their 2 strokes envious.

Rounding off the model’s specifications:

The electrical components, including the main wire harness, are at a bare minimum to reduce weight. Starter button and kill switches are handlebar mounted.

There are then some special components which enhance the bike’s standard features: 

Chain tensioners in red billet alloy

Blue anodised Excel rims

Red chain guide

Red anodised dual-material sprocket

Black billet alloy footpegs with steel pins – Handguards

Rounding off the package are brand-new graphics, featuring typical Racing colours, to make a unique model in the Beta range stand out.

Every RX 300 will be supplied with a moto-style paddock stand.