Features: Both ends have rubber fitting to prevent moisture entering causing electrical leakage.It can be installed successfully with a simple operation, most suitable choice for you.Made of high quality rubber, this spark plug resistor cap is durable, heat resistant, and corrosion resistant, providing long lasting reliability.Whether for daily commuting, long distance travels, or racingon the track, this spark plug resistor cap is suitable for various motorcycle usage scenarios.Upgrade your motorcycle's ignition system with the easy to install and replace spark plug resistor cap. Experience improved engine performances and fuels efficiency with this essential accessory.Specifications: Material:PlasticSize:As Picture ShownColor:BlackFor EN500CFor 650 1999-2014 GN250 ATV 300CCPackage Includes: 1x Spark Plug Resistor Capnote: .Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. .Due to the difference between different monitors, the picture may not reflect the actual color of the item.Thanks for your understandings.