2025 Beta 300 RX

Features

• ENGINE: Updated Cylinder porting and matched cylinder head along with ignition timing has increased the bike's overall power. The engine pulls harder and longer.
• FRAME: Dedicated for motocross use, Chro-moly with a larger backbone to increase stiffness while enhancing the turning. The frame also has an updated mounting for the rear brake master cylinder.
• EXHAUST: An updated expansion chamber attached to a shorter silencer specific for moto.
• SUSPENSION: Closed cartridge 48 mm KYB front fork and the rear shock have been updated with valving for better overall performance. 50 mm shock body reduces the oil temperatures under extreme use during long motos.
• HANDLEBAR MOUNTS: Xtrig FlexFix isoelastic bar mounts reduce rider fatigue and vibration. Also allows for flexibility in handlebar adjustment.
• ALUMINUM SUB FRAME: Similar to the 450 RX the sub frame on the 300 RX is fabricated from aluminum for more strength.
• FOOTPEGS: Enhanced grip performance while being less bulky so rider can maintain control at all times.
• BODYWORK: Along with the aluminum sub-frame, the rear plastic is now a three-piece design. A smaller fuel tank (1.8 gallon) has been installed to reduce the overall weight and center of gravity. The MAP switch has been moved to the handlebar pad for ease-of-use.
• Durable frame similar to the 450 RX, design of the rear master cylinder for reduced temperatures and better feel, aluminum sub-frame, updated cylinder porting and ignition timing to increase the bike's overall power, five speed transmission, upgraded footpegs with enhanced grip and less bulk, updated expansion chamber, narrower radiators for greater turning radius, updated rear shock with larger body to reduce the oil temperature under extreme use, XTrig FlexFix handlebar mounts, smaller fuel tank, MAP switch to adjust power delivery, adjustable power valve, electric starter, and easy access air filter box.