Eliminate flats and enjoy reliable off-road performance with Michelin Bib Mousse. This foam tire insert replaces conventional tubes, preventing pulled stems, punctures, and pinched tubes. Designed for off-road use, it maintains a pressure equivalent to 13 psi for consistent performance, with an estimated service life of 6 months depending on riding conditions. Suitable for motocross, enduro, and off-road motorcycles, Michelin Bib Mousse ensures peace of mind during your most aggressive rides. Fitment: M15: 80/100-21 & 90/90-21 M14: 120/90-18 & 140/80-18 Usage Notes: Off-road use only Maximum speed: 80 mph Do not exceed 20 miles on hard surfaces at top speeds Features: Eliminates flats, pinched tubes, and pulled stems Maintains consistent 13 psi pressure Long-lasting foam design Ideal for off-road, motocross, and enduro motorcycles Provides reliable performance under extreme conditions