POWER TO RECORD The Polini thermal unit allows to double the power. So it really makes drilling performance, low, medium and high 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. liquid-cooled, is distinguished by the merger 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, withstands 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 delivered complete with O-ring seal in fluorinated polymer to the head resistant to high temperatures and from 2 lamellae.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 Group D Polini Aprilia Gulliver 47 LC 50 applications: Aprilia Gulliver 50 LC frame number: