Nicasil is an expensive technology used for coating the cylinders of only the best quality engines on the market. It is far superior to sleeved and hard-chromed cylinder walls. It is a coating made up of nickel and silicon carbide. The Nicasil coating is very hard and durable thus providing a very long wearing surface for the piston and rings. Also the silicon carbide particles that are dispersed throughout the nickel form a multitude of adhesion spots on which oil can collect. This is another reason that engines with Nicasil coated cylinders last longer because of having improved cylinder lubrication. Also because the Nicasil coating literally impregnates the cylinder walls with silicon the result is a super low coefficient of friction, thus reducing engine heat and wear. Engines with Nicasil coated cylinders run cooler and with less vibration. Lower friction also means easier and quicker engine starts. Also an additional benefit is that the piston and cylinder expand at the same rate, thus, creating a very seizure-resistant engine.