2026 Beta RX 250 2T
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Introducing the MY26 Beta RX 250 2T
Aadding a lightweight, high-revving option for riders.With a completely new engine architecture, it offers explosive performance, nimble handling, and theability to challenge in competitive race environments.
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Description
Introducing the MY26 Beta RX 250 2T
Aadding a lightweight, high-revving option for riders.With a completely new engine architecture, it offers explosive performance, nimble handling, and theability to challenge in competitive race environments.
Head: The 250cc provides riders with a high-revving engine that competes with the likes of 250 4T bikes.
Cylinder, piston and power valve: Betamotor engineers developed new cylinders and pistons, designed specifically for the RX 250 2T engine. The power valve was calibrated differently between the models by adopting different springs.
Crankshaft: The RX 250 2T has a stroke reaching 72mm.
Crankcase: new engine crankcases, with different internals
Graphics: a modern race look, simple yet bold, the final touch to the Italian RX range.
Radiators: structurally strengthened to prevent deformation, even during heavy use.
Shared Features Across the RX Range
All 2026 RX models share the following upgraded features, ensuring consistency in quality and performance:
The frame now features a cast-in brace to further strengthen the frame around the steering neck area,increasing stiffness.
Aluminium subframe offering light, yet stiff structure with the rigidity to overcome the demands of motocross.
Access to the air filter remains unchanged and is tool free.
Kayaba 48mm forks and 50mm shock, calibrated specifically for MX applications.
Nissin brakes with Galfer discs (260mm front / 240mm rear) for powerful, modular braking.
Xtrig Flexfit handlebar mounts for enhanced comfort and vibration dampening.
Electric start with lithium battery, lighter and a must for quick starts.
Non o-ring chain, lighter and smoother.
Two engine maps (wet/dry) on all 2T models
Components
250 TWO STROKE POWER.
The RX 250 2T is fitted with an all-new 250cc two-stroke motor that just loves to rev!
KYB PERFORMANCE. STANDARD.
The Beta RX range is fitted with fully adjustable Kayaba (KYB) closed cartridge 48mm forks for unrivalled performance.
KYB SHOCK FOR UNRIVALED PERFORMANCE.
The MY26 RX range is fitted with a KYB 50mm rear shock for unrivalled performance out on the track.
BUILT TOUGH.
The RX aluminium subframe offers a light, yet stiff structure with the rigidity to overcome the demands of motocross.
NEW SHARP GRAPHICS.
New for MY26 comes new sharp graphics, in typical Beta colours that give the bike a race ready feel.
XTRIG SILENT BLOCK. STANDARD.
New silent blocks reduce vibrations, and raise the handlebars by 5mm, aiding in rider grip, control and performance.
EXCEL ANODIZED RIMS. STANDARD.
The Beta RX range comes stock with blue anodized Excel rims, for a race ready look and durable performance.
Specifications
Chassis
FRAME
Molybdenum steel with double cradle w/ quick air filter access
WHEEL BASE
1482 mm
MAX LENGTH
2177 mm
MAX WIDTH
830 mm
MAX HEIGHT
1260 mm
SEAT HEIGHT
945 mm
GROUND CLEARANCE
340 mm
FOOTREST HEIGHT
422 mm
WEIGHT (DRY)
100.0 kg (Front 48 kg / Rear 52kg)
FUEL TANK
7L
COOLING SYSTEM
1.3L
FRONT SUSPENSION
48 mm KYB AOS Closed Cartridge with adjustable compression & rebound
REAR SUSPENSION
KYB 50 mm body with adjustable rebound and high/low speed on compression adjustment
FRONT WHEEL TRAVEL
305mm
REAR WHEEL TRAVEL
300mm
FRONT BRAKE
Wave disc ø260 mm and double-piston floating caliper
REAR BRAKE
Wave disc ø240 mm and single-piston floating caliper
FRONT RIM
21 x 1,6 - 36 holes
FRONT TYRE
90/90 - 21
REAR RIM
19 x 2.15 - 36 holes
REAR TYRE
120/80 -19
Engine
TYPE
Single cylinder 2 stroke liquid cooled
BORE
78 mm
STROKE
73.6 mm
DISCPLACEMENT
351.7 cc
COMPRESSION RATIO
12.45:1
EXHAUST VALVE
BPV system
STARTER
Electric starter
IGNITION
AC Kokusan - Digital CDI
SPARK PLUG
2 x MR7CI8
INDUCTION SYSTEM
Induction reed
LUBRICATION
Pre-mix
CARBURETTOR
Keihin PWK 38
CLUTCH
Wet multi-disc clutch
PRIMARY DRIVE
Z.27/72
TRANSMISSION
5 gears
DRIVE
Chain
ENGINE OIL
SAE 10W/50
