VITTORIA Air-Liner Tubeless Insert - Gravel, One-Size, 31-40mm giant X-SYNC pulley technology provides greater

X-SYNC pulley technology provides greater efficiency

RAPIDFIRE PLUS SLX shift lever delivers smooth control out on the trail

provides a high level of flat protection

Less aggressive timing than competitors means any change in pedal stroke is unnoticeable for most riders

Giant delivers the benefits of tubeless tire technology to riders of all types

VITTORIA Air-Liner Tubeless Insert - Gravel, One-Size, 31-40mm giant X-SYNC pulley technology provides greaterAir 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 Air Liner GRAVEL 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