Michelin 81701 Bib Mousse 120/90-18 Foam Insert

The Michelin Bib Mousse 81701 is a professional-grade foam tire insert designed to replace traditional inner tubes in off-road motorcycle applications. Engineered for extreme racing conditions, this closed-cell foam mousse provides consistent performance without the risk of punctures or flats.

Key Features:

• Size: 120/90-18 (fits 120/90-18 tires)
• Closed-cell foam construction eliminates puncture and flat tire risks
• Provides consistent pressure equivalent to approximately 13 PSI
• Designed specifically for off-road and enduro racing applications
• Requires special mousse installation gel and tire tools for proper mounting
• Limited lifespan based on usage conditions (typically 3-6 months of racing)

The Bib Mousse is the industry standard choice for professional enduro, hard enduro, and off-road racers who demand maximum reliability in the most challenging terrain. Note that mousses must be stored in sealed bags when not in use to prevent premature drying and degradation.