Engine

The engine of the RX 300 offers a high level of performance, especially on the mid-rangeand top end of the power delivery, yet still provides excellent torquethus offering an enjoyably progressive drive which is always under control, focusing on the concept of docility in all situations.

The main characteristic details of the RX 300 2Strokes are as follows:

Cylinder: Bore and x Strokeof72.0 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 that changes the power delivery at drastic levels providing the tune-ability 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 lines: high-performance models in blue silicone.

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 moto.

Chassis

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

The wheels are 21” at the front and 19” at the rear, with 80/100-21 and 120/80-19 Michelin Starcross 6 tyres.

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

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 trim level:

-Chain tensioners in red Ergal alloy

-Blue anodised Excel rims-Red chain guide-Red anodised dual-material sprocket

-Black Ergal alloy footpegs with steel pins

-Handguards

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