Michelin Airstop tubes are used by those who want the very best Features an overlap splice which is stronger than the butt splice used in most others Splice is always placed opposite the valve, which

Michelin Ultra Heavy-Duty Inner Tube - 21" Type A/Black
- Featuring a 4 mm wall thickness, the Michelin Ultra Heavy-Duty inner tube is made specifically for those who push their tires to the absolute limits in the roughest of conditions.
- It also provides outstanding protection against punctures and pinch flats.
- 4.0 mm wall thickness.
Michelin Airstop tubes are used by those who want the very best Features an overlap splice which is stronger than the butt splice used in most others Splice is always placed opposite the valve, which helps to provide a more balanced tube

Michelin Ultra Heavy-Duty Inner Tube - 21" Type A/Black