POWER TO RECORD The Polini thermal unit allows to double the power. So it really makes drilling performance, especially at low and medium engine speeds. It optimizes the air flow, the power at high speeds for driving on the track more and more dynamic. TECHNICAL CHARACTERISTICS The cylinder bore diameter of 47 mm. It stands for melting in lamellar graphite cast iron self-lubricating and antiwear properties. It is a particular cast iron in which the fusion of the graphite granules are distributed in finer manner. This feature offers an extraordinary mechanical strength and reduces the thermal stress of the engine. Delete any loss of power, it improves lubrication, facilitates the sliding of the piston, is resistant to high operating temperatures and maintains unchanged during the time its mechanical characteristics. Cast piston for high silicon content gravity. Two segments with specific characteristics in order to optimize yield and performance over time. high compression head. The kit is supplied complete with O-ring in fluorinated polymer for the head resistant to high temperatures ..If you have any other doubt you can always contact us and we will be happy to help. Read below the applications for this article. cylinder thermal Polini Group D 47 H2O Minarelli DL3 50 applications: Minarelli DL3 50 frame number: