MICHELIN M02 Bib Mousse 140/80-18 Desert – Rear Off-Road Foam Insert
The MICHELIN M02 Bib Mousse 140/80-18 Desert (057331) is a dedicated rear off-road foam insert that replaces a traditional inner tube in 140/80-18 tires, providing a reliable puncture-resistant solution for desert rally, cross-country and enduro competition use.
Key Features
- Foam insert engineered to replace an ultra heavy duty inner tube in 140/80-18 off-road rear tires.
- Designed specifically for desert and rally-style riding, where high speeds and harsh terrain demand maximum puncture resistance.
- Invented by MICHELIN for Cross-Country, Rally, Enduro and Motocross competition use.
- New Bib Mousse corresponds to an equivalent inflation pressure of around 0.9 bar (13 psi), delivering a consistent, low-pressure off-road feel without the risk of pinch flats.
- Lighter than a comparable ultra heavy duty inner tube, reducing unsprung mass for improved suspension response.
- Eliminates conventional tube-related punctures and pinch flats in off-road competition use.
Benefits in Off-Road Racing
- Puncture resistance: Closed-cell foam structure resists punctures and pinch flats caused by rocks, roots and sharp impacts, supporting continuous performance over long rally stages.
- Consistent feel: Stable, tube-free construction keeps the rear tire working at a near-constant equivalent pressure, helping maintain predictable grip as temperatures and terrain change.
- Improved traction: Low equivalent pressure around 0.9 bar (13 psi) increases the tire’s contact patch, enhancing traction and control on sand, gravel, rocks and broken terrain.
- Competition focus: Developed for rally-raid, desert racing and serious enduro competition, where finishing a stage without punctures is critical.
- Weight optimisation: Lighter than an ultra heavy duty tube, helping suspension react more freely over whoops, stones and ruts.
Technical Specifications
| Product type | Off-road foam insert (Bib Mousse) for rear motorcycle tire |
| Manufacturer | MICHELIN |
| Model designation | M02 Bib Mousse Desert |
| Size | 140/80-18 (rear) |
| SKU / Part number | 057331 |
| EAN | 3528700573312 |
| Recommended tire lines | MICHELIN Desert Race 140/80-18, MICHELIN Desert Race Baja 140/80-18 (rear) |
| Equivalent tube reference | Replaces UHD tube size 18 UHD Large in 140/80-18 rear tires. |
| Equivalent pressure (new) | Approx. 0.9 bar (13 psi). |
| Application | Off-road competition use (Cross-Country, Rally, Enduro, Motocross) with MICHELIN off-road competition tires of matching size. |
| Position | Rear wheel |
Typical Applications and Tire Compatibility
The MICHELIN M02 Bib Mousse 140/80-18 Desert is intended for high-demand off-road competition motorcycles using 140/80-18 rear tires in desert and rally-style is optimized for use with the following MICHELIN rear tires:
- MICHELIN Desert Race 140/80-18 – long-distance rally-raid and desert racing.
- MICHELIN Desert Race Baja 140/80-18 – intensive off-road and desert applications.
When matched to these tires, the Bib Mousse helps maintain traction and stability over long stages, rough liaison sections and soft desert sand, while virtually eliminating tube-related punctures.
Service Life and Installation Notes
- Designed to be used exclusively with compatible MICHELIN off-road competition tires in the specified size.
- Typical service life is up to six months from the date it is first fitted, varying with riding speed, temperature and intensity of use.
- The first use should occur within 18 months of the Bib Mousse production date to maintain optimal performance.
- For optimum durability and even lubrication inside the tire, MICHELIN Bib Mousse fitting gel is used during installation.
This configuration creates a robust, maintenance-light rear wheel setup for riders participating in demanding desert rally raids, cross-country events and extreme enduro competitions where deflation-free performance is essential.
