325/350-21 Tube | TR4 Center Stem
This is a 325/350-21 tube with a TR4 center valve stem. Our classic car inner tubes are built using premium materials for a durable and reliable service life. Hartford brand tubes are built to meet our specifications using premium grade materials. They are designed specifically for their applications, to provide a high quality inner tube solution and reliable service life. These are excellent quality tubes, available in a wide range of sizes for collector and specialty vehicle applications.