Vittoria

Air-Liner Tubeless Insert - Cyclocross, 31-33mm

Vittoria Air-Liner Tubeless Insert for cyclocross is a reusable foam insert built to increase protection and stability in 700c tubeless setups running 31–33mm tires. By supporting the tire at lower pressures, it helps reduce rim strikes, improves control over rough sections, and adds a margin of security if the tire loses air—useful for finishing a lap or getting back to the car without immediately damaging the rim.

• CX-focused sizing - Designed for 700x31–33mm tubeless cyclocross tires for consistent fit and support
• Foam insert support - Helps stabilize the tire at lower pressures for improved grip and bump compliance on rutted, choppy courses
• Rim impact protection - Adds a protective layer between tire and rim to reduce the risk of damage from hard hits and bottom-outs
• Bead stability at low pressure - Helps maintain a secure bead interface when chasing traction with lower PSI
• Run-flat capability - Designed to provide support in the event of air loss to help keep the bike rolling to a safe stop or back home
• Complete tubeless-ready kit - Includes one insert plus a 60mm Vittoria Multiway Tubeless valve for optimized airflow (5-way), also compatible with 3-way valves
• Sealant compatible - Intended for use with tubeless sealant (Vittoria recommends ammonia-free sealant)