Suzuki is planning to bring back two-strokes with a clean-burning, fuel-injected, all-new screamer engine.
The internet rumour machine is in full swing over the whisper Suzuki may be returning to the smoker stable for its future off-road weapons.
The Suzuki RM250 was a venerable racing machine, although long in the tooth by the time Suzuki discontinued production of the RM250 at the end of 2007. It’s never good news hearing about a bike going through the wood chipper, because it means the end of a generation. Manufacturers pour millions of dollars into research and development for a single model. Let that sink in for a minute. Those manufacturers expect a return on their investment, and when they think the well has run dry, they either reinvest funds or move along. Suzuki took the latter route with the RM250. That’s still sad to think about.


On the drawing above, tagged with the numbers 71, 70 and 74 can be seen a fuel injection system. The unit is mounted low-down in the cylinder and angled upwards – this is so that the fuel ‘cone’ that is sprayed into the chamber as an atomised mist is launched over the second scavenger port in the cylinder.


Because the fuel is sprayed so finely and can be directed into the chamber so accurately, plus be timed so expertly, the burn is very clean and efficient meaning that emissions are very low indeed. The fuel is used as a cooling element inside the cylinder to further increase overall engine efficiency.


Compared to the old two-stroke feed technology this is light-years ahead and clearly Suzuki is confident that is can build a modern, light and powerful two-stroke motor that will be compliant with various legislation around the world.


Here Suzuki are introducing the BRAND NEW 250 2 Stroke!

General information

Model:RM 250
Category:Cross / motocross
Rating:93.6 out of 100. Show full rating and compare with other bikes
Price as new (MSRP):US$ 5397. Prices depend on country, taxes, accessories, etc.Engine and transmission
Displacement:249.04 ccm (15.19 cubic inches)
Engine type:Single cylinder, two-stroke
Bore x stroke:66.4 x 72.0 mm (2.6 x 2.8 inches)
Fuel system:Carburettor. 38.0mm Mikuni TMX flat-slide with throttle position sensor (TPS)
Ignition:CD with three-dimensional mapping and electronic advance
Cooling system:Liquid Cooled
Transmission type,
final drive:
ChainChassis, suspension, brakes and wheels
Rake (fork angle):26.5°
Trail:110 mm (4.3 inches)
Front suspension:47.0mm inverted Showa cartridge fork with 16-position rebound and 16-position compression-damping adjustability
Front wheel travel:315 mm (12.4 inches)
Rear suspension:Pro-Link Showa single shock with spring-preload, 17-position rebound-damping adjustability, and compression-damping adjustment separated into low-speed (13 positions) and high-speed (3.5 turns)
Rear wheel travel:320 mm (12.6 inches)
Front tyre:80/0-21
Rear tyre:110/90-19
Front brakes:Single disc
Front brakes diameter:240 mm (9.4 inches)
Rear brakes:Single disc
Rear brakes diameter:240 mm (9.4 inches)Physical measures and capacities
Dry weight:96.6 kg (213.0 pounds)
Seat height:942 mm (37.1 inches) If adjustable, lowest setting.
Ground clearance:338 mm (13.3 inches)
Wheelbase:1,481 mm (58.3 inches)
Fuel capacity:7.57 litres (2.00 gallons)