First look at the 2022 Beta 300 RX [8 Fast Facts for Motocross]

While common in Enduro, Dual Sport and Observed Trials disciplines, Beta is undoubtedly a boutique brand for the motocross market. Last year the 300 RX debuted as a US-only model, and for 2022 the motocrosser is back with updates. Rather than being designed with the toughest rider in mind, Beta touted the RX’s “handling” as its calling card. With that in mind, let’s take a look at the 2022 Beta 300 RX.

Beta 300 RX 2022 price

  1. The 2022 Beta 300 RX gets a diaphragm clutch for the six-speed transmission that works with the two-stroke powertrain. Gone is the multi-plate design, which uses a set of plates and springs. The diaphragm clutch has a single cone that replaces the spring, and three spring options are available. This makes it easy to get the clutch feel you prefer. KTMs and Kawasakis also use this clutch design.

2022 Beta 300 RX For Sale

  1. The KYB closed-cartridge fork is revalved. According to Beta, the new setup improves feedback, reduces harshness and resists bottoming. The Sachs ZF piggyback reservoir shock is unchanged.

  1. There’s a new assembly that lowers the seat height by almost half an inch. This will have the relative effect of making the footrests and handles taller. Beta says cornering will be improved.

2022 Beta 300 RX MSRP

  1. Beta made production changes to the frame. New weld locations are claimed to improve feel for the rider and reduce stress on the frame.

  1. The kickstand is gone this year, and the 2022 RX is down to 235 pounds with the 2.5-gallon fuel tank full. To compensate for the lack of a kickstand, a Beta-branded Acerbis bike stand is included with the RX.

Beta 300 RX 2022 Specifications

  1. The electric starter returns. If you want a kickstarter, there is an optional kit.
  1. You don’t usually see stock handguards on a dirt bike, but they are on the RX. If you ride on rocky tracks, you’ll save a few bucks.

  1. There are new graphics for the 2022 Beta 300 RX, and the MSRP of $9199 is unchanged. You won’t find many 300-class two-stroke motocross bikes to compare to the RX, although we can tell you the Beta is $700 more than the KTM 250 SX. Shops are rarely cheap!

Beta 300 RX 2022 Specifications


  • Type: 2-stroke single cylinder with counterweight
  • Displacement: 293cc
  • Bore x stroke: 72 x 72mm
  • Compression ratio: 11.6:1
  • Induction: V-Force reed
  • Power Supply: Keihin 38mm PXK
  • Exhaust: Adjustable Power Valve with Arrow Expansion Chamber
    Starting: electric (back-up starter optional)
  • Lubrication: Premix
  • Transmission: 6 speed
  • Clutch: wet diaphragm style
  • Final drive: O-ring chain


  • Frame: double cradle chromoly steel
  • Front suspension; Travel: 48mm adjustable inverted KYB AOS closed cartridge fork with compression and rebound damping; 12.15 inches
  • Rear suspension; Travel: Link-assisted fully adjustable Sachs ZF piggyback shock; 11.6 inches
  • Rims: Excel Takasago
  • Tires: michelin Star Cross 5 medium
  • Front tire: 90/90 x 21
  • Rear tire: 120/80 x 19
  • Front brake: 260mm Galfer rotor with Nissin 4-piston caliper
  • Rear Brake: 240mm Galfer rotor with Nissin 2-piston caliper


  • Wheelbase: 58.6 inches
  • Seat height: 37 inches
  • Ground clearance: 13.3 inches
  • Fuel tank capacity: 2.5 gallons
  • Wet weight: 235 pounds

2022 Beta 300 RR Price: $9,199 MSRP

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With 50 years of riding experience, Don Williams is a fan of all kinds of motorcycles. He likes sport bikes, cruisers, dirt bikes, touring bikes, adventure bikes, dual sport bikes and custom bikes. Ask Don what his favorite bike is and he’ll say, “Whatever bike I ride.