BikeMaster 374668 - 80/100-21 TR6 Tube Heavy Duty

BikeMaster 374668 - 80/100-21 TR6 Tube Heavy Duty

80/100-21

Designed to perform on the track or the trail. Whether you ride hard-pack or sand, the natural rubber compounds of the BikeMaster® Heavy-Duty tubes are durable. With increased wall thickness, these tubes provide better puncture and pinch flat protection to keep you riding.