The EOS QUATTRO is the 2nd generation of the EOS 4-stroke engine range. It delivers smooth and progressive power, a low noise level and very low fuel consumption.    The EOS QUATTRO engine is a lightweight single-cylinder, 4-stroke, 4-valve engine with a decompression start system.

The decompression system releases 70% of the compression during the starting sequence. This makes the engine easy to start. As soon as the engine starts, the decompression system switches off automatically.    EOS QUATTRO is a 2-piece, completely CNC-milled crankcase engine made of aluminium. The engine has a displacement of 276 cm³ and has 4 valves driven by an overhead camshaft with chain drive. The lubrication system is driven by an oil pump and provides constant oil pressure regardless of oil temperature or engine speed.