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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 450 RX

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  • New
  • In Stock
  • Banning
  • E40065
  • ZD3E7M485R0450323
  • Motorcycle / Scooter
  • Off-Road
  • Gas

2024 Beta 450 RX

Beta’s prototype testing has been going on for more than 4 years and the manufacturer from Florence, Italy is ready to release the production model to the masses, the wait is over for the all-new 2024 450 RX Motocross model!

Beta has kept no secrets in their desire to chase the world of motocross, with the early USA introduction of the 300 RX 2 stroke model in 2021 about the same time as the first shots were taken of the prototype 450 RX 4 stroke model racing in the MXGP championship. It is officially the first four-stroke motocross bike built by Beta, the 450 RX model was designed to carry on the Beta tradition of Rideability. To offer a ride that is more forgiving while still providing performance that will encourage aggressive riding.

The design is completely new from the ground up. Frame, engine and all other components are of the highest level of performance and lightness. Beta motorcycles are hand built in Florence, Italy and have been for more than 115 years. The team of engineers are every-day riders and understand the values that a motocross rider is looking for.

Features: MX chassis and frame, aluminum sub-frame, sleek rear fender and side panels, KYB 48mm front forks and 50mm rear shock, Maxxis tires, five speed transmission, wet diaphragm style clutch, blue anodized Excel rims, red anodized dual material rear sprocket, extra wide machined aluminum footpegs with stainless steel pins, and included customized bike stand and four different throttle pulleys to customize throttle response.


  • Banning
  • New
  • E40065
  • 2024
  • Beta
  • 450 RX
  • Motorcycle / Scooter
  • Off-Road
  • ZD3E7M485R0450323
  • Single cylinder, 4 –stroke, 4-valve
  • Liquid cooled
  • 449.3cc
  • 97mm
  • 60.8mm
  • 13.4:1
  • Twin Oil Pumps w/Cartridge Filter & Separate Compartments For Engine & Transmission
  • 46mm Throttle Body
  • Dual-Map Kokusan with Traction Control
  • NGK LKAR8A-9
  • Finger followers w/ shim adjustment
  • Electric
  • Hydraulic, adjustable diaphragm multi-plate clutch
  • 5 Speed
  • DID drive chain
  • Molybdenum steel / Double Cradle w/ push button seat and quick air filter access
  • 48 mm KYB AOS closed cartridge fork, adjustable compression & rebound
  • KYB 50mm body with adjustable rebound and high/low speed on compression adjustment
  • 260 mm floating rotor
  • 240 mm rotor
  • 12"
  • 11.8"
  • 21"
  • 19"
  • Maxxis
  • Maxxis
  • 58.4"
  • 37.2"
  • 13"
  • Footrest: 16.1"
  • Tank: 1.8 US Gallons
  • 229 lbs

*Price, if shown, does not include government fees, registration, taxes, A.D.M., dealer document preparation charges, finance charges, or added accessories installed on the unit (if applicable). Final actual sales price will vary depending on options or accessories selected. A.D.M. includes but is not limited to inter-store transportation costs, assembly, servicing, dealer insurance, profit & overhead, flooring & other costs where applicable. All vehicles in this ad are subject to prior sale. All Current Manufacturer Promotions and Rebates are included in pricing. Offers expire when promotion ends OR when advertised vehicles are sold.

Warning WARNING: Operating, servicing and maintaining a passenger vehicle, an off-highway motor vehicle or a recreational marine vessel can expose you to chemicals including engine exhaust, carbon monoxide, phthalates, and lead, which are known to the State of California to cause cancer and birth defects or other reproductive harm. To minimize exposure, avoid breathing exhaust, do not idle the engine except as necessary, service your vehicle or vessel in a well-ventilated area and wear gloves or wash your hands frequently when servicing your vehicle or vessel. For more information go to https://www.p65warnings.ca.gov/products/passenger-vehicle and https://www.p65warnings.ca.gov/products/marine.