Description
A quality inner tube is the foundation of reliable tire performance—cheap tubes fail prematurely, cause pinch flats, and leave you stranded. The IRC Standard tube delivers OEM-equivalent construction and durability at a price that won’t drain your race budget or workshop supplies. Whether you’re running vintage iron or maintaining a modern sportbike, this tube provides the air retention and puncture resistance you need for consistent performance lap after lap.
- Size: 3.50-18 / 4.00-18
- Valve Type: TR-4
- Construction: Butyl rubber
- Standard: Meets OEM specifications
- MPN: T20063
- Application: Motorcycle wheels
- Fitment: Universal (size-specific)
- Installation: Bolt-on replacement
- Performance: OEM-quality air retention









