Motorcycle Engine Accessories Cylinder Cylinder Diameter 74mm For YBR250 2007 2009 Item Type: Cylinder Kit Material Composition: Cast Iron with Ceramic Coating Compatible Model: YBR250 2007–2009 OEM Part Number: 1S4-11311-00-A0 Special Features: Performance Engine Component Certification: ISO9001 Certified This motorcycle engine cylinder is designed for compatibility with YBR250 models from 2007 to 2009.Constructed from cast iron, the cylinder features a ceramic composite coating applied to the inner wall.The ceramic particles, measuring 0.3μm in diameter, contribute to a tight fit and improved durability.A Ni-SiC composite ceramic film is integrated into the design to enhance resistance to wear.The coating technology supports temperature resistance, corrosion resistance, and self-lubricating performance, contributing to an extended service life estimated between 100, 000 and 150, 000 kilometers.This makes the component suitable for use in performance-oriented engine setups.The design direct replacement capability while maintaining dimensional accuracy and functional under demanding operating conditions.