All enduro and motocross bikes are nowadays supplied with inner tubes in the tyres. These tubes are often very thin (1.4 mm) and you easily get a flat tire. The Michelin tube HEAVY DUTY is made of butyl and is 4 mm thick. Butyl is known for its excellent air impermeability.

• reinforced air valve
• HEAVY DUTY tube
• thickness 4mm

fits for:

21": 80/100-21, 90/90-21, 90/100-21

18": 140/80-18