DRAG SPECIALTIES Inner Tube - Heavy Duty - 21" - CMV 99-6136CMV-BX73

A quality inner tube is the foundation of reliable tire performance, and a compromised tube can lead to unexpected flats and downtime that derail your racing schedule. DRAG Specialties Heavy Duty Inner Tubes are engineered from premium rubber compounds to withstand the extreme pressures and thermal cycles of competitive driving. Whether you're running a drag strip, circuit course, or high-performance street application, this tube delivers the durability and consistency you need for predictable handling and consistent lap times.

The 21" CMV (Center Metal Valve) configuration is purpose-built for standard wheel sizes and delivers superior puncture resistance compared to standard-duty alternatives. The metal valve stem reduces the risk of valve failure under sustained high pressure, a critical advantage when every tenth of a second matters. Installation is straightforward—simply mount inside your tire and inflate to specification for immediate performance gains.

• Size: 21"
• Valve Type: Center Metal Valve
• Material: Heavy-duty rubber compound
• Fitment: Standard wheel applications
• Installation: Bolt-in, no fabrication
• Pressure Rating: High performance spec
• MPN: DS181225
• Manufacturer: DRAG Specialties