Motorcycle Engine Accessories Bore 65.5mm Cylinder Assembly For SL230 CRF230 FTR223 230 XR230 The Motorcycle Engine Accessories Bore 65.5mm Cylinder Assembly is designed as a direct replacement for SL230, CRF230, FTR223, and XR230 models.Constructed from cast iron with a ceramic coating, the cylinder enhances and performance.The inner wall features a performance ceramic composite material layer along with a Ni-SiC composite ceramic film, providing improved temperature resistance, corrosion resistance, and self-lubricating characteristics.These properties contribute to extended service life and efficient engine. With a precise bore diameter of 6.55cm, the assembly ensures proper fitment for the specified motorcycle models.It meets ISO9001 standards for quality assurance.The design supports enhanced engine output and is suitable for performance-oriented riding applications. The kit includes a cylinder, piston ring, and gasket, providing all necessary components for replacement.This cylinder assembly is intended to improve engine efficiency and under conditions.Verify model compatibility before installation to correct fit. This is a replacement item from an aftermarket supplier.Brand names are cited solely to demonstrate device compatibility.