• Revolutionary single-cylinder 4-stroke, 350cc side valve engine
• Liquid cooled
• Battery-less Kokusan ignition and fuel injection systems.
• The clutch, gearbox, suspension, and brakes are proven TXT PRO items.
• Engine lubrication is by wet sump.

All these characteristics result in a light and very compact engine, very much in line with the acclaimed TXT PRO.
The frame is the new '09 tube profile in Cr-Mo alloy. The fuel tank is specific for this model. The new bike boasts a weight of 67.5 kg, also in line with the new TXT range for 2009.

“A 4-stroke bike has its pros and cons. Among the pros we have better traction, power and a more linear torque curve, which means a more regular power delivery. In the cons we have the weight, an aspect which is minimized as much as possible in each of the products in GAS GAS. In this new engine we have put the valves at the sides of the cylinder, so that they are parallel, which lowers the centre of gravity and enables the engine to have almost the same size as a 2-stroke, also saving some weight. At the same time, this engine is much simpler in its structure, because it has fewer pieces than a conventional one,” says Hugues.

Although the great revolution in this four-stroke GAS GAS is the side-valve collocation, we cannot forget the battery-less electronic injection system, a complete premiere that will also be applied shortly to the new 4-stroke 250 that is already being prepared.
GAS GAS started their 4-stroke production in the enduro field. The first engine built by the company was a 400cc which would grow up to 450cc within two years. In 2005, a new generation of 4-stroke GAS GAS appeared, always with electronic injection to guarantee an increase, with some future evolutions, of the engine power and performance, a good compromise that has seen its technology transferred to trial.

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