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The values presented on this site are for estimation purposes only. Your actual payment may vary based on several factors such as down payment, credit history, final price, available promotional programs and incentives. Applicable tag, title, destination charges, taxes and other fees and incentives are not included in this estimate.

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2024 Beta 390 RR 4-Stroke

  • New
  • Beaverton Motorcycles
  • BET200260
  • ZD3E4E378R0200260
  • Motorcycle / Scooter
  • Off-Road

2024 Beta 300 RX

Beta Power Valve allows the rider to adjust power delivery to dial in the right hit for the situation

Michelin Starcross, known for their motocross performance come standard on every 300 RX

New Kayaba C46 rear shock. The collaboration of Kayaba and Beta led to the development of a shock that is particularly effective in enhancing the Rideability of the bike under all conditions. KYB shocks are seen as a gold standard in the racing, scene in terms of their ability to absorb big square-edged hits while at the same time, providing a supple ride over the smaller, lower speed bumps.

Extra wide billet aluminum foot pegs: with stainless steel gripper pins provide the rider with a strong, yet light platform.

New shrouds are narrower then before to give the rider more freedom of movement, especially in corners. Designed to be sleek, simple, & attractive.


  • New
  • BET200260
  • 2024
  • Beta
  • 390 RR 4-Stroke
  • Motorcycle / Scooter
  • Off-Road
  • ZD3E4E378R0200260
  • Single cylinder, 4 –stroke, liquid cooled, 4-valve (Titanium intake and exhaust), electric start. (back up kick starter as an option)
  • 385.6cc
  • 88mm
  • 63.4mm
  • 12.48:1
  • Twin Oil Pumps w/Cartridge Filter & Separate Compartments For Engine & Transmission
  • Dual-Map Kokusan 200w output
  • NGK LKAR8A-9
  • On-Demand w/ push of a button
  • 42mm Throttle Body w/Dual Injectors
  • Wet Diaphragm-style
  • 6 Speed
  • O-ring chain
  • Final Gearing: 13T Front/48T Rear
  • Molybdenum steel, double cradle w/ quick air filter access
  • Titanium Intake & Exhaust
  • 48 mm Sachs Open Cartridge with compression, rebound & spring preload adjustment
  • Aluminum Body Sachs shock w/adjustable rebound and hi/low speed compression
  • 260 mm floating rotor
  • 240 mm rotor
  • 11.6"
  • 11.4"
  • Maxxis Enduro
  • Maxxis Enduro
  • Rim: 21"
  • Rim: 18"
  • 58.7"
  • 37"
  • 12.6"
  • Footrest: 16.3"
  • Tank: 2.4 US Gallons
  • Tank: 650 cc
  • 237 lbs (wet weight, no fuel)
  • 6 month Limited Warranty

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  • Calculation is estimate only.

Advertised pricing excludes applicable taxes title and licensing, dealer set up, destination, reconditioning and are subject to change without notice. Pricing may exclude any added parts, accessories or installation unless otherwise noted. Sale prices include all applicable offers. Not all options listed available on pre-owned models. Contact dealer for details.