Vittoria Air-Liner Protect DownHill



Extreme protection on the DH tracks

The Air-Liner Protect Downhill tyre insert originates from the most demanding downhill race trails of the UCI Mountain Bike World Series.

Constructed from high-density polymer foam ensuring long-lasting product life, it allows riders to confidently tackle even the most demanding trails and terrains. It provides a robust barrier between the rim and the tire, offering unprecedented protection against punctures, sidewall slashes, and pinch flats.

The Air-Liner Protect Downhill version boasts a higher density foam compared to the enduro version, meticulously engineered to withstand the relentless forces encountered during high-speed descents.  Air-Liner Protect Downhill come as a complete loop, eliminating the need for tedious cutting and zipping.

No longer will you fear the wrath of jagged rocks or treacherous roots, for Air-Liner Protect Downhill has your back.

Air-Liner Protect Downhill is made of a proprietary foam specifically designed for donwhill applications. The material is compatible with any type of liquid sealant. It comes in 2 wheel sizes (27.5” and 29”), each compatible with tire size 2.4″ to 2.6″. It must be used with tubeless set-ups only (not compatible with the use of inner tubes) and with multiway tubeless valves only – a valve is provided in the pack.

Impact Protection

  • Air-Liner Protect saves the rims from heavy impacts, while reducing the risk of snake bites.
  • The “T” shape creates a barrier in between the rim edges and the inner side of the tyre.

High Speed

  • Air-Liner Protect has no negative impact on the tyre rolling speed.
  • Under air pressure, the insert collapses on the rim creating a seal able to withstand even the strongest impacts.

Lateral Stability

  • Air-Liner Protect supports the tyre side under the load of cornering.
  • You can approach turns at full speed: no risk for your tyres to coming off the rim.
  • Air-Liner Protect also increases the protection of the tyre sidewalls from cuts and punctures.

Air Volume

  • Thanks to its “T” shape, Air-Liner Protect allows for more air volume inside your tyre than many other inserts.
  • This means you can lower the air pressure and gain additional grip without any risk of unbeading your tire or damaging your rim.

Run Flat

  • In the event of catastophic tyre damage and air loss, AirLiner Protect gives run flat support up to 50km.
Wheel size compatibility Tyre size compatibility Weight E-Bike compatibility
27.5″ 2.4″-2.6″ 175g YES
29″ 2.4″-2.6″ 185g YES

Additional information


27.5 x 2.4/2.6, 29 x 2.4/2.6


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