This Kenda Heavy Duty TUFF TUBE is designed to fit all tires from 90/90-21 to 80/100-21 in size. They are constructed using 2.5mm heavy duty butyl-rubber that will resist punctures and pinch flats.
- Two times thicker than OEM tubes
- Designed specifically for motocross and off-road use
- TR-6 valve stem (8mm diameter straight threaded metal stem)
- Sized to fit all 90/90-21 and 80/100-21 tires