2021 Beta 300 RX Guide

2021 Beta 300 RX

2021 Beta 300 RX 2021 Beta 300 RX 2021 Beta 300 RX 2021 Beta 300 RX


Introducing the 2021 Beta 300 RX.

Beta Offers a Limited Production Motocross Bike

Introducing the all-new 2021 Beta 300 RX! A new model from the Italian family motorcycle manufacturer that promises to bring “Rideability” to the MX world.

The new 300 RX features an electric start 293.1cc two stroke power plant with a 6-speed transmission. The engine has been tuned exclusively for moto in every way. With an adjustable power-valve, riders can dial-in the amount of “hit” the engine provides.

The chassis includes a special frame built just for the RX model, as well as longer-travel suspension. The KYB closed cartridge front fork and Sachs rear shock have internal settings that were developed by Beta USA’s in-house suspension department.

The bike is designed for all levels and ages. Check out the video below with 5-time GNCC champion and hall of famer Rodney Smith, Supercross champion Jake Weimer, and Hare & Hound champ Chance Fullerton showing off the potential of the new RX model.


Note: Pictures and specs are that of the pre-production model. Actual production model decals and other small details may differ slightly.





2021 Beta 300 RX Guide Totalmotorcycle.com Key Features

300cc 2-stroke with special power delivery for MX
19″ rear wheel
Electric Start
Longer travel suspension
Adjustable power valve to provide a custom power delivery
Stiffer MX suspension settings
Plated exhaust pipe
Moto stand included with every RX model


The first shipments are scheduled for late October however most will be sold out by the time they reach the dealers so riders are encouraged to reach out to their Beta dealer and leave a deposit to insure delivery. Riders can also reserve one by clicking the box below and leaving a $889.00 refundable deposit. This will insure delivery to the dealer of their choice from the production.

October (Very limited production)


plus $389.00 destination fee.
Not included are professional dealer set up, taxes, license or other required fees.




2021 Beta 300 RX Guide Totalmotorcycle.com Features and Benefits

Beta USA’s Tim Pilg comments, “We wanted to build an MX bike that utilized many of the characteristics that our off road race bikes have but with more power and stiffer suspension. The RX model shows how much fun a 2-stroke can be. The sound and feeling of the bike is unmatched and I hope our future owners of the model will appreciate the effort put into the bike. It is truly special.”

Other features of the RX include a lightweight lithium battery, 19″ rear wheel, push-button seat removal, Brembo hydraulic clutch, Nissin front and rear brakes with oversize rotors, plated Arrow pipe, composite rear sub-frame, and a V-Force reed assembly. The rear shock can be removed in less than 10 minutes without the need to unbolt the rear sub-frame.

Every 300 RX is delivered with a side stand that can be removed. The bike also comes with a MX stand as well.

Moto stand included with every RX model

Adjustable Power Valve to set the “Hit” that is desired

Rain or Shine MAP switch for groomed or un-groomed tracks




2021 Beta 300 RX Guide – Totalmotorcycle.com Specifications/Technical Details
US MSRP Price: $ $9,199.00 USD
Canada MSRP Price: $ See Dealer CDN
Europe/UK MSRP Price: £ See Dealer GBP (On The Road inc 20% Vat)


Type: Beta-Built single cylinder, 2-stroke, liquid cooled, with BPV power valve system and electric start with a back-up kick starter sold as an option
Bore: 72mm
Stroke: 72mm
Displacement: 293.1cc
Compression Ratio: 12.9:1
Exhaust Valve: Beta Progressive Valve (BPV)
Ignition: AC-CDI Kokusan
Spark Plug: NGK BR8ES
Lubrication: Pre-Mix
Carburetor: Keihin PWK 38mm
Clutch: 6-Spring wet multi-disc
Transmission: 6-speed
Final Drive: O-ring chain


Frame: Molybdenum steel/double cradle w/quick air filter access.
Wheelbase: 58.3”
Seat Height: 37.3”
Ground Clearance: 12.9”
Footrest Height: 16”
Dry Weight: 219 lbs. (dry weight)
Fuel Tank Capacity: 2.55 US gallons
Front Suspension: 48 mm KYB AOS Closed Cartridge fork, adjustable compression & rebound.
Rear Suspension: Aluminum Body Sachs shock w/adjustable rebound and hi/low speed compression
Front Wheel Travel: 12.15”
Rear Wheel Travel: 11.6”
Front Brake: 260mm floating rotor
Rear Brake: 240mm rotor
Front/Rear Rim: 21” (Front) 19” (Rear)
Front/Rear Tire: Michelin Starcross
Warranty: 6 month Limited Warranty




Manufacturer Specifications and appearance are subject to change without prior notice on Total Motorcycle (TMW).

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