Review – Key Features – Features & Benefits – Specifications
2025 Beta 450 RX: MXGP CLASS.
Introducing the 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 and 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: Updated rear subframe that has been reinforced to add stiffness and strength in key areas, updated valving in the rear shock for better overall performance, new lithium battery to ensure quick starts, 51 tooth rear sprocket for quicker spin-up of the power delivery, XTrig FlexFix handlebar mounts, larger rear axle diameter to reduce flex and provide better durability, five speed transmission, upgraded footpegs with enhanced grip and less bulk, updated engine mapping with latest setting tested by Beta race team, MAP switch and tractional control to adjust power delivery, three throttle pulleys with different ratios come standard with the 450 RX to allow riders to configure settings to their liking, electric starter, and easy access air filter box.
2025 Beta 450 RX Guide Totalmotorcycle.com Key Features
Beta USA entered the motocross world in 2021 with the introduction of their 300 RX, a 2-stroke model that provided a solid platform in design, handling, and looks. Along with the beauty of the bike, the “factory sound” of the 293cc motor was like no other. Riders quickly discovered what Beta likes to call Rideability. In 2024, Beta launched another 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.
For the 2025 season, Beta is proud to release the details of both the 300 and 450 RX with updates to enhance both models. Updates to the 300 include changes to the engine, chassis, and suspension. A new frame highlights the model, one that mimics that of its older 450 brother.
The 450 RX model also 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.
What does Rideability mean for Beta? It means designing and manufacturing motorcycles with a balance and feel that makes them easier to ride. A motorcycle able to get all the best from any rider, thanks to an engine-frame combination which is fun to ride yet does not tire the rider with an engine that is more forgiving, an engine that is focused on putting power to the ground and creating a center of gravity balance that is not found in many other brands. This feeling can only be felt by riding the bike, a feeling that Beta owners already know.
2025 Beta 450 RX Guide Totalmotorcycle.com Features and Benefits
Rear sub-frame and filter box: while the rear sub-frame’s geometry and the filter box remain the same, the structure has been reinforced in a series of points that stiffen and strengthen it, maintaining lightness and ability to absorb stresses. Access to the filter remains on the left side of the bike and is extremely easy and requires no tools to access.
Suspension: Closed cartridge 48mm KYB front fork and the rear shock have been updated with new valving for better overall performance.
Battery: A stronger lithium battery ensures quick starts while remaining very light in weight.
Final ratio: Rear sprocket has been replaced with a 51 tooth for a quicker “spin-up” of the power delivery.
Handlebar Mounts: Isoelastic handlebar mounts are used to reduce vibration, these bar mounts also raise the handlebar height 5mm.
Rear Axle: The rear axle diameter has been increased to 22mm to reduce flex as well as provide better durability.
Footpegs: the 2025 model receives new, less bulky footpegs, with an enhanced grip performance provided to the rider’s boot, to keep the bike under control at all times.
New Graphics and Colors: More “Italian” red showing off the heritage of the Beta brand, tied together with new graphics for 2025 bringing a fresh new look to the RX.
Updated 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.
Throttle Pulleys: Each 450 RX arrives with three extra throttle pulleys, all with a different ratio to allow riders to install the ratio to their liking.
2025 Beta 450 RX Guide – Totalmotorcycle.com Specifications/Technical Details
US MSRP Price: from $10,999 USD
Canada MSRP Price: from $ See Dealer CDN
Europe/UK MSRP Price: £ See Dealer GBP (On The Road inc 20% Vat)
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ENGINE TYPE
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Single cylinder, 4 –stroke, liquid cooled, 4-valve with electric start.
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Manufacturer Specifications and appearance are subject to change without prior notice on Total Motorcycle (TMW).
