Vittoria Air-Liner Light Tubeless XC Trail Tire Insert Description: The Vittoria Air-Liner Tubeless XC Trail Tire Insert is optimized for use in XC and all-trail applications. At just 55g, it offers run-flat protection, increased grip, and stability at a minimal weight so you can focus on the ride and not the additional weight. optimized for tires between 29" x 2.1" - 29" x 2.4", it's ideal for XC and Trail bike tires. Sold individually. Features: Ideal for cross-country and trail tubeless tires Vittoria's lightest insert at 55g Progressive compression under load provides increased stability and rim protection Allows for run flat riding Includes insert-compatible tubeless valve Specifications: Recommended Tire Size: 29 x 2.1" - 29 x 2.4" Max Internal Rim Width: 30mm Weight: 55g