Vittoria Gravel Air-Liner Tire Insert

FEATURES: 

• Increases control, durability, performance
• Protects the tire and wheel
• Prevents burping and bead breaking
• Includes a Vittoria 5-way Tubeless Valve
• Compatible with any wheel size (up to 29"/700c), 3 way tubeless valves, and tire widths from 31mm to 40mm"

SPECS: 

• Material: Closed-Cell Polymer Foam
• Sizes: One Size for 31mm to 40mm 
• Lifespan: 2000 hours of normal riding, or 1 full hour of run-flat downhill use
• Weight: 47g

Air-Liner GRAVEL is an insert for tubeless-ready gravel tires. Re-usable and very easy to install – as easy as mounting an inner tube on your tire – it is compatible with tubeless-ready tires only and with 3-way valves (in the packaging, 5-way valves are provided for ultimate airflow). The insert can be used with sealant – preferably without ammonia