2025 Beta 450 RX Base

2025 Beta 450 RX Base

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Exterior Colors:

  • Year 2025
  • Make Beta
  • Model 450 RX
2025 Beta 450 RX Base

2025 Beta 450 RX Base

2025 Beta 450 RX

In 2024, Beta launched the 450 RX model that would show off the talents of the engineering team based in Florence, Italy. The 450 RX 4 stroke had been tested in the prestigious MXGP class for more than three years as a factory prototype model. The production version of this prototype was very well received by riders as well as the media. The 2025 RX model continues the Beta Rideability mission in Motocross. Rideability is the smoothness, ease of handling, and overall comfort experienced on a Beta Motorcycle. It encompasses factors such as throttle response, suspension performance, ergonomic design, and stability all contributing to a seamless ad enjoyable riding experience. Rideability is the perfect balance of power and agility that provides riders with confidence inspiring control and effortless maneuverability, resulting in a gratifying ride, no matter the conditions.

The 2025 450 RX model received updates bringing it closer to perfection than ever. Updates to sharpen the model’s weapons, ready to do battle on MX tracks throughout the USA. An even-stronger rear aluminum subframe, suspension upgrades, as well as a more powerful lithium battery are just a few.

Features may include:

  • Engine Mapping

The mapping has been updated with the latest settings that have been tested by the Beta race team. This along with traction control completes the electronic package of the RX model.

  • Footpegs

Enhanced grip performance while being less bulky so rider can maintain control at all times.

  • Handlebar mounts

XTrig FlexFix isoelastic bar mounts reduce rider fatigue and vibration. Also allows flexibility in handlebar adjustment.

Engine

Engine Type Single cylinder, 4 –stroke, 4-valve
Cooling System Liquid cooled
Displacement 449.3cc
Bore 97mm
Stroke 60.8mm
Compression Ratio 13.5:1
Lubrication Twin Oil Pumps w/Cartridge Filter & Separate Compartments For Engine & Transmission
Fuel System 46mm Throttle Body
Ignition Dual-Map Kokusan with Traction Control
Spark Plug NGK LKAR8A-9
Valve train Finger followers w/ shim adjustment
Starter Electric

Drivetrain

Clutch Hydraulic, adjustable diaphragm multi-plate clutch
Transmission 5 Speed
Final Drive DID drive chain

Chassis

Frame Type Molybdenum steel / Double Cradle w/ push button seat and quick air filter access

Suspension

Front Suspension 48 mm KYB AOS closed cartridge fork, adjustable compression & rebound
Rear Suspension KYB 50mm body with adjustable rebound and high/low speed on compression adjustment
Front Wheel Travel 12"
Rear Wheel Travel 11.8"

Brakes

Front braking system 260 mm floating rotor
Rear braking system 240 mm rotor

Wheels & Tires

Front Wheel 21"
Rear Wheel 19"
Front Tire Maxxis
Rear Tire Maxxis

Dimensions

Wheelbase 58.4"
Seat Height 37.2"
Ground Clearance 13"
Height Footrest: 16.1"

Capacities

Fuel Capacity Tank: 1.8 US Gallons

Weights

Dry Weight 229 lbs

Product Photography