Tusk Severe Duty 3 mm Motorcycle Inner Tube 80/100×21 - Reinforced Butyl, TR‑4 Valve, Tough Trail Replacement

The Tusk severe duty 3 mm motorcycle inner tube in size 80/100×21 is engineered for riders who demand more robustness from a tube. Its reinforced 3 mm wall gives you greater protection against pinch flats, abrasions, and rough terrain that might damage thinner tubes. Constructed with premium butyl rubber, this tube offers reliable air retention, flexibility under load, and better resistance to aging or environmental stresses. The TR‑4 valve stem is precisely centered for compatibility with most rims, making inflation and pressure checks simple. Whether you're replacing a failed front tube or carrying a dependable spare for off‑road rides, this tube is designed to handle rough conditions. Its 80/100×21 dimension ensures a snug fit within compatible tire/rim systems. Reminder: Always verify tire and rim compatibility before installation. Inspect rim edges for sharp burrs or damage before mounting to protect the tube from stress.

• 3 MM Reinforced Wall - extra thick for enhanced puncture and impact resistance
• High‑Quality Butyl Construction - stable air retention and good durability over time
• Centered TR‑4 Valve Stem - standard fit for most rims; easier inflation and access
• Exact 80/100×21 Sizing - optimized for front tires on many dual sport or trail bikes
• Rugged Spare or Replacement - built for tough terrain, ready when you need it most