This motorcycle cover cylinder gasket kit is compatible with CRF250R models from 2004 to 2009 and CRF250X models from 2004 to 2017.The kit includes gaskets designed to replace the cover cylinder gaskets on these motorcycles.The gasket set features a combination of rubber and aluminum components.The aluminum interface base provides structural support, while the rubber portions are thickened and odorless.Construction is precise to maintain proper sealing and prevent air leakage during.This part is intended for direct replacement of the gasket assembly.Please verify compatibility with your specific motorcycle model before installation.