RX
2T 350

The bike for those seeking the thrills of a high-displacement 2-stroke, but with always manageable power delivery. The engine of the RX 350 2T is designed to deliver substantial and constant thrust from low revs; power delivery is progressive, making the bike easy to ride and suitable for a wide range of riders.

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351,7 CC

Displacement

78 mm

Bore

100 kg

Dry weight

340 mm

Ground clearance

Main features

ENGINE

MAXIMUM EFFICIENCY

The RX 350 2T engine has been designed to offer you the best of both worlds, combining the advantages of a 2-stroke with power delivery similar to that of a 4-stroke, full and linear at any rpm. Power delivery has been optimised to be full and linear, with consistent torque from low revs. This allows for smoother and more effective riding, making the most of all that power with less effort.

DOUBLE SPARK PLUG HEAD

An exclusive feature of the 350, the double spark plug head ensures optimal combustion at all speeds. Smoother power delivery and greater combustion, especially at low and medium speeds, for easier and more intuitive riding.

NISSIN BRAKING SYSTEM

The Nissin system with 260 mm (front) and 240 mm (rear) Galfer discs ensures powerful and modulated braking. It allows you to precisely manage the 250’s great responsiveness, ensuring decisive braking and total control to maintain maximum speed in corners.

FINAL GEAR RATIO

The 14/47 final gear ratio was chosen to enhance the linearity of the 350 engine. This longer ratio allows you to make the most of the engine’s torque, reducing the use of the gearbox and ensuring a smoother ride.

HANDLEBAR SILENT BLOCKS

The silent blocks on the handlebar reduce vibrations, increasing riding comfort. On a bike like the 350, this translates into less fatigue and a consistent, high-performance pace throughout the race.

RADIATORS

The reinforced structure of the radiators ensures maximum reliability and constant cooling, even when the generous torque of the 350 engine is used for long periods. A guarantee of consistent performance from the first lap to the last.

DEDICATED THERMAL UNIT

The cylinder, piston and exhaust valve are designed specifically for the 350. The valve calibration, in particular, is designed to promote a deliberately more progressive and linear power delivery.

CRANKSHAFT AND CRANKCASE

The crankshaft with increased stroke to 73.6 mm is a key element in the power delivery of the 350. Together with the dedicated intake passages in the crankcase, it contributes to generating higher torque and a more substantial and constant thrust.

KYB SUSPENSION

Equipped with 48mm KYB forks and a 50mm monoshock. The specific calibration for this model has been developed to work in perfect synergy with the linear and torque-rich delivery of the 350 engine. The setting is optimised to ensure maximum traction when exiting corners and great stability at speed.

SPECIFIC EXHAUST

The exhaust system features a silencer with an increased internal diameter. This technical choice was made to enhance the torque and smooth power delivery that characterise the 350 engine, contributing to its unique character.

THE PERFECT BALANCE BETWEEN POWER AND HANDLING

The RX 350 2-stroke engine was designed with a specific goal in mind: to make the great power of a 2-stroke motocross bike fully exploitable by every rider. Exclusive solutions such as the dual-ignition cylinder head and long-stroke crankshaft work together to create a smooth, linear power delivery. This translates into a more fluid, less tiring and incredibly effective ride, allowing you to focus purely on the perfect line.

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manual brochure Tech Specs

CHASSIS

Frame

Molybdenum steel with double cradle split above the exhaust port

Wheelbase

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

Dry weight

100 kg (front 48 kg; rear 52 kg))

Fuel tank capacity

7,0 l

Cooling system capacity

1,3 l

Front suspension

Kayaba Hydraulic USD closecartridge fork with ø 48 mm shaft

Rear suspension

Kayaba Monoshock with progressive compound lever

Shock absorber stroke

133 mm

Front wheel travel

305 mm

Rear wheel travel

300 mm

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

Rear rim

19 x 2,15 – 36 holes

Front tyre

80/100 – 21

Rear tyre

110/90 – 19

ENGINE

Type

Single cylinder, 2-stroke, liquid-cooled

Bore

78 mm

Stroke

73,6 mm

Displacement

351,7 cc

Compression ratio

12,45:1

Exhaust Valve

BPV system

Starter

Electric starter

Ignition

AC Kokusan – CDI digitale

Spark plug

2x MR7CI8

Induction system

Induction reed

Lubrication

Mixing

Carburettor

Keihin PWK 38

Clutch

Wet multi-disc clutch

Primary drive

Z. 27/72

Transmission

5 gears

Final transmission

Chain

Engine oil

SAE 10W/50

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