This is a used 26mm restricted exhaust header, sold as it is. The 26mm size is a requirement for most X30 Junior karting series.

To use this exhaust header, first make sure it fits your kart's X30 Junior engine. Install it according to the standard procedures. Note that this is a used item, so it may have some signs of wear. During use, keep an eye on the EGT bung to ensure it's working properly. For maintenance, regularly check for any loose connections or signs of damage. Clean it gently to keep it in good condition. Remember, it's sold as is, so if you encounter any major issues, you may need to seek professional help.