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 motorcycles.Constructed from cast iron with a ceramic coating, the cylinder enhances engine durability and performance.The inner wall features a performance ceramic composite material along with a Ni-SiC composite ceramic film, providing improved wear resistance, heat resistance, and corrosion resistance.These properties contribute to extended service life and efficient engine. With a precise diameter of 6.55cm, the cylinder assembly proper fitment for specified models.The design supports performance-oriented riding by maintaining structural integrity under operating temperatures.ISO9001 certification indicates compliance with established quality management standards. Compatibility Statement: This is a third-party replacement.Brand/model references serve only as compatibility indicators.