Dirtbike Engine Accessories Cylinder Cylinder Diameter 85mm For XR400 1996 1997 1998 1999 2000 2001 2002 2003 2004 Material Type: Cast iron / ceramic Model Name: XR 400 12100-KCY-670 Special Features: Direct replacement of parts, performance ceramic coating for durability Number of Cylinders: 1 Cylinder Displacement (ml): 400 OEM CODE: 12100-KCY-670 The cylinder is designed for XR400 models from 1996 to 2004 and serves as a direct replacement for components.Constructed from cast iron, it provides a base for engine performance.The inner wall is coated with a performance ceramic composite material that enhances wear resistance and reduces friction.Ceramic particles with a diameter of 0.3μm are embedded into the cylinder bore, creating a precise structure that supports long-term.The coating consists of a Ni-SiC composite ceramic film applied to the internal of the cylinder.This layer offers temperature resistance, corrosion resistance, self-lubricating properties, structural strength, and a low friction coefficient ranging from 0.06 to 0.082.These characteristics help maintain engine efficiency under demanding conditions such as speed and off-road use.The self-lubricating nature of the coating contributes to reduced component wear, supporting extended engine service life.Designed for straightforward integration, the cylinder fits directly into compatible XR400 engine setups without modification.It is intended for riders seeking improved engine durability and consistent performance.With proper maintenance, the cylinder can last between 100, 000 and 150, 000 kilometers.