A Bib Mousse is a flexible foam ring that fits inside the rim of your tyre.
Unlike a standard inner tube which has one air pocket, a Michelin Bib Mousse is solid and therefore is much longer-lasting and will not puncture easily. It will wear eventually so will need replacing, but this depends on how often your tyres are used.
The Bib Mousse has grown in circumference by approximately 30mm. This is due to the internal carcass of the Michelin medium 140 /80/18 FIM Enduro tyre being much larger than its’ predecessors Comp 3 and Comp 6 (now discontinued).
They have also made some changes to the ingredients used to create the Bib Mousse which gives longer life and reduces the break-in time considerably. The same applies to the M18 Mousse, and the ingredients change will eventually benefit the rest of the range too.
Yes, we have carried out extensive winter testing with several top BEC riders on a mixture of 125/150/ 250f/350f/3002t machines in South Wales at a Forest location with streams, rocks, and a grass type test all the riders remarked on how well it performed from new and would be confident to go straight into a special test on a Bib Mousse & Michelin tyre combo.
Dealers still had stock of the old comp 3/comp 6 tyres and the M14 Bib Mousse is too large for these, the new Enduro medium 140/80/18 tyre launched at ISDE in France in late 2017 and was an instant winner and is now a firm favourite with both leisure and pro racers, due to its revolutionary added Silica technology (see info here) so now is the time to make the switch to the larger size.
You can take any car / truck / bike tyre of the same size from any manufacturer and they will all vary in size dramatically, dirt bike tyres especially. Michelin have SPECIFICALLY designed this Bib Mousse to give a perfect fit in a Michelin Medium 140/80/18 and refuses to affect its performance by compromising its design to fit other brands of the tyre; the sticker on the box reminds the user of this.
Yes! The Michelin Bib Mousse products have been designed to fit perfectly with Michelin tyres. We would not recommend using Michelin Bib Mousse with any other tyre brands.
As we say on our website; as long as it’s not too old and hasn’t shrunk, you should be fine. Obviously, the new tyre is larger internally so will have a very soft feel with the older type of mousse.
The M18 Bib Mousse to suit the 120 section rear Enduro Medium has also changed and is again slightly larger, as is the M199 19” Bib Mousse, you will notice improved packaging for all.
That’s a very difficult question to answer and is dependent on so many factors.
Friction is the worst enemy along with sustained high-speed road use.
Obviously, a big Rally bike fully laden with fuel/Nav Tower in a hot country is going to be more demanding on a Bib Mousse than a green laner on a small 250f in cold British winter. Once a rider uses a Mousse and the guarantee of NEVER getting a puncture they NEVER go back to air! With a Rabaconda tyre changer (purchase here) Bib Mousse fitment takes minutes and forms part of your usual mid-week bike prep.
Over the years we have heard stories of customers using virtually every substance as mousse lube. The genuine lube gel is to prevent friction build up. Regular re-lubing will extend the life of your Bib Mousse for ease of application, one 50 gram tube of genuine gel is required per Bib Mousse and they come in a box of 12 that will easily last a racing season.
20 years ago when Bib Mousse was first introduced, rim locks were sharp cast metal bonded on rubber and these cut the Mousse and caused problems, so long as you use modern Solid Plastic KTM / Husky OE type rim lock, or the superior lighter nylon Motion Pro type, you will be fine.
In fact, when using Rabaconda we find using a Rim lock makes fitting a Bib Mousse easier on the initial hook over on first bead.
Yes! Their tyres and Bib Mousse come straight from our daily stock, the same as yours. Feel free to closely examine any tyre or Bib Mousse they use at events and don’t be afraid to ask them for tyre advice.
The simple answer is NO. Michelin designed the product over 30 years ago for factory team riders only, over the years it’s been available to the general public, across the world riders are competing in Enduro events and trail riding on the public highway with mousse, to the best of our knowledge we have never known of an issue or prosecution.
If your dirt bike is 100% road legal with indicators/mirrors/reflector’s and you intend on doing lots of road work then Bib Mousse is probably not for you!