2027 BETA RX

THE NEW BETA RX RANGE 2027!

2027 BETA RX

Beta RX 350 2T MY27 - Image 1
Beta RX 350 2T MY27 - Image 2

Beta RX 350 2T MY27

THE NEW BETA RX RANGE 2027!

TBC
  • The perfect embodiment of the RideAbility philosophy applied to the largest displacement in two-stroke motocross engines. The RX 350 2T stands out clearly from traditional race-ready bikes, offering an incredibly smooth, linear and usable power delivery, ideal for riders seeking a relaxed yet effective riding experience based on long gear ratios and constant traction. With the updates introduced in MY27, this model increases its raw power and refines its structural strength, establishing itself as an absolute engineering benchmark within Betamotor’s cross line-up.
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Tech Specs

Beta RX 350 2-Stroke

Technical Specifications


Chassis

SpecificationValue
FrameMolybdenum steel with double cradle split above the exhaust port
Wheelbase1482 mm
Max Length2177 mm
Max Width830 mm
Max Height1260 mm
Seat Height945 mm
Ground Clearance340 mm
Footrest Height422 mm
Dry Weight100.0 kg (front 48 kg; rear 52 kg)
Fuel Tank Capacity7.0 l
Cooling System Capacity1.3 l
Front SuspensionKayaba sealed hydraulic cartridge front fork ø 48 mm fork tubes
Rear SuspensionKayaba Monoshock with progressive compound lever ø50
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 Tyre110/90 - 19

Engine

SpecificationValue
TypeSingle cylinder, 2-stroke, liquid-cooled
Bore78 mm
Stroke73.6 mm
Displacement351.7 cc
Compression Ratio12.45:1
Exhaust ValveBPV System
StarterElectric starter
IgnitionAC Kokusan – digital CDI
Spark Plug2x MR7CI8
Induction SystemInduction reed
LubricationMixing
CarburettorKeihin PWK 38
ClutchWet multi-disc clutch
Primary DriveZ.27/72
Transmission5 gears
Final TransmissionChain

| Engine Oil | SAE 10W/50 |Claude Opus 4.8 works best with the latest desktop app. Update now.

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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.

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