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MOTORCROSS - RX 350 2T
RX 350 2T
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.
| Displacement | Bore | Dry weight | Ground clearance |
|---|---|---|---|
| 351,7 CC | 78 mm | 100 kg | 340 mm |
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.
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.
In Detail
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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.
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Technical Specifications
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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 |