EC450 fse

As in the case of their two-stroke counterparts, the FSE (Four-Stroke Enducross) feature all of the innovations affecting the EC range, but these modifications reach further afield, both in the cyclo and engine areas.
Stemming from 100% Enduro origins, this motorcycle is best described as one that is extremely easy to ride (relaxed, comfortable position for the pilot) and fitted with rather soft suspension systems and new adjustments at the front (Marzocchi). Its new blue decoration points in the direction of the numerous small modifications carried out in this unit, which make it majestically elegant.
Having fitted it with a computercontrolled electronic-injection system and the appropriate diagnosis software for checking out its various components, GAS GAS took one great step towards perfection by definitely getting rid of the carburettor. The injection system provides better, quicker responses from a drive placed in a position slightly closer to the front end than in previous versions. The starting engine is more powerful and includes a clutch system on the pinion cascade.

• Engine  
• Cylinder size 449 c.c.  
• Type Monocylindric, Four stroke, Four valves head cylinder.  
• Number of cylinders One  
• Cooling system Water  
• Bore x stroke 95x62,6mm  
• Injection Magneti Marelli*.  
• ignition Integrated in injection system  
• Clutch Hydraulic multi-disc.  
• Gearbox 6 speeds.  
• Transmision Primary with gears, secondary with chain.  
• Kicksart Electric motor and auxiliar kickstart pedal.  

EC300

 All GAS GAS Enducross (EC) motorcycles are meant for demanding users interested in highperformance units, as shown by the results achieved through sports competitions. Due to a number of unique modifications, basically involving the chassis, the improvement of this range goes on to achieve a motorcycle that is both powerful and light, with good suspension systems and top-class brakes, plus a high level of riding comfort.
Further to the small chassis modifications of the previous edition, consisting in the slight closure of the steering and a fractional relocation of the engine at the front –which gave it the status of best Enduro chassis as far as performance was concerned, according to the most respected specialised magazines–, one of the achievements of the 2004 models is the improved driving position of the rider through the fitting of an upper flange with two alternative handlebar positions and a slightly different tank location, all of which is very much in line with the company's style, even if it has become less conventional than in the past. Thus, the new range combines a very efficient driving position with such qualities as stability at high speeds and excellent manoeuvrability under any working conditions. All of this highlights a performance further improved by the use of a perimetric-type chassis.

• Engine  
• Cylinder size 294,7 c.c.  
• Type Two-stroke, single cylinder engine with direct reed intake into lower crankcase and exhaust valve.  
• Number of cylinders One.  
• Cooling system Liquid.  
• Bore x stroke 72 x 72 mm.  
• Carburettor Keihin PWK* 38mm.  
• Ignition Kokusan* digital CDI Multispark.  
• Clustch Hydraulically operated multidisc.  
• Gearbox 6 speeds.  
• Transmission Primary gearing, secondary chain.  
• Grease Mixture.  

EC250

Still on the cyclo area, all GAS GAS EC units feature a Marzocchi suspension on the front assembly and an Öhlins one on the rear. For 2004, new adjustments have been applied to the front suspension to improve the response of the assembly and for a higher performance, whilst increasing the accuracy of the whole motorcycle. GAS GAS prefers rather soft ratings giving top priority to comfort considerations, a suspension type that provides substantial advantages in rocky, uneven, slow areas.
As in the case of the Trial units, here a more rigid structure has also been achieved whereby deflections within the whole of the front assembly are successfully prevented through a front wheel with a larger axle diameter.
In spite of the fact that GAS GAS always provides plenty of braking power, the brakes, especially the rear one, have also been modified. The 2004 models feature brake shoes made of a different compound that improves their performance at high temperatures. Added to the brake-disc improvement, this provides higher heat resistance and a more accurate response to braking actions. An improved touch of the front-brake whip has also been achieved.

• Engine  
• Cylinder size 249,3 cc.  
• Type Two-stroke, single cylinder engine with direct reed intake into lower crankcase and exhaust valve.  
• Number of cylinders One.  
• Cooling system Liquid.  
• Bore x stroke 66,4 x 72 mm.  
• Carburettor Keihin PWK* 38mm.  
• Ignition Kokusan* digital CDI Multispark.  
• Clustch Hydraulically operated multidisc.  
• Gearbox 6 speeds.  
• Transmission Primary gearing, secondary chain.  
• Grease Mixture.  

EC200

As in the case of the TXT Pro units, all GAS GAS Enduro motorcycles now include a new fuel-tank cap with an integrated devaporizer that has been further developed through the use of polyamide as its core material and a much more compact design.
Yet another development of the updated EC range is a new steel centrifugal pinion. This change in the material used extends the duration of the adjustments and makes things much easier for the rider. The timing has also been improved for a better overall performance. Within the realm of aesthetic considerations, three features become immediately obvious: the new rear mudguard, the number-plate holder, and the 2004 decoration that is standard for the whole range.
These changes affect all of the two-stroke EC units. The details of every engine specification, including major drive modifications as per the various displacements available, especially for the Enducross 250cc and 125cc versions, are as follows:

• Engine  
• Cylinder size 199,4 cc.  
• Type Two-stroke, single cylinder engine with direct reed intake into lower crankcase and exhaust valve.  
• Number of cylinders One.  
• Cooling system Liquid.  
• Bore x stroke 62,5 x 65 mm.  
• Carburettor Keihin PWK* 38mm.  
• Ignition Kokusan* digital CDI Multispark.  
• Clustch Hydraulically operated multidisc.  
• Gearbox 6 speeds.  
• Transmission Primary gearing, secondary chain.  
• Grease Mixture.