2027 BETA RX

THE NEW BETA RX RANGE 2027!

2027 BETA RX

Beta RX 250 4T MY27 - Image 1
Beta RX 250 4T MY27 - Image 2

Beta RX 250 4T MY27

THE NEW BETA RX RANGE 2027!

TBC
  • Beta’s official debut in the MX2 class with a 4-stroke. The new RX 250 4T is designed to offer the perfect balance between top-level performance and rideability, thanks to an extremely compact and lightweight engine unit — approximately 1.5 kg lighter than the competition’s standard — and advanced racing electronics featuring Quick Shift and Launch Control for maximum effectiveness on the track.
Motocross

Price Promise

We guarantee competitive pricing across our full range of new and used bikes.

Certified Dealer

Officially authorised and trusted to supply and support leading motorcycle brands.

Extended Warranty

Added peace of mind with comprehensive warranty options available.

4.8 Google Rating

Highly rated by our customers for service, expertise, and reliability.

Tech Specs

Beta RX 250 4-Stroke

Technical Specifications


Chassis

SpecificationValue
FrameMolybdenum steel with double cradle split above the exhaust port
Wheelbase1475 mm
Max Length2170 mm
Max Width830 mm
Max Height1270 mm
Seat Height945 mm
Ground Clearance340 mm
Footrest Height422 mm
Dry Weight101 kg (front 48 kg; rear 53 kg)
Fuel Tank Capacity7.0 l
Cooling System Capacity1.4 l
Front SuspensionKayaba sealed hydraulic cartridge front fork ø 48 mm fork tubes
Rear SuspensionKayaba Monoshock with progressive compound lever ø50 mm
Shock Absorber Stroke133 mm
Front Wheel Travel305 mm
Rear Wheel Travel300 mm
Front BrakeWave disc ø260 mm and double-piston floating caliper
Rear BrakeWave disc ø240 mm and single-piston floating caliper
Front Rim21 x 1.6 - 36 holes
Rear Rim19 x 2.15 - 36 holes
Front Tyre80/100 - 21
Rear Tyre100/90 - 19

Engine

SpecificationValue
TypeSingle cylinder, 4-stroke, liquid-cooled
Bore78 mm
Stroke52.3 mm
Displacement249.3 cc
Compression Ratio14.4:1
Valve TrainDOHC finger-type rocker arms / 4 valves
StarterElectric starter
ACGMitsuba
Spark PlugNGK LMAR9AI-8
Lubrication2 oil pumps
Throttle BodyØ 46 mm
ClutchMultiple disks in an oil bath
Primary DriveZ.23/72
Transmission5 gears
Final TransmissionChain

| Engine Oil | SAE 10W/50 1 l |Claude Opus 4.8 works be

Similar Bikes

More Beta Motocross you might like

What Our Customers Say

4.8 rating from our customers

About John Lee Motorcycles

John started work in the Motorcycle Trade in 1955, working for 2 large London Dealers for 10 years. His ambition was to own his own dealership, so moved to Northamptonshire and purchased the shop where we are today in Higham Ferrers, that was 1964.

Join the Club

Sign up for exclusive offers and discounts on the latest Motocross, Enduro and Electric bikes.

John Lee and Sons Motorcycles 2026. All rights reserved.
Powered By Fastrak