Cush Core Tire Insert Kit Trail 27. 5"Absorb Shock and Vibration Cush Core tire inserts are designed to absorb shock and vibration while also adding performance benefits to your mountain bike. The Trail Set provides an all-new option for riders looking for riders looking for a performance/weight balance. The Trail was engineered to provide more progressive sidewall support: the harder you push, the more support you'll feel. Enabling supple tire response on flat corners and a stable sidewall when railing berms. It absorbs shock and vibrations, improves cornering, and prevents flat/rim damage, giving you total confidence. Features Tire widths: 2. 1" - 2. 6"Inner rim width: 22mm - 35mm Includes: 2 Cush Core tire inserts, 2 44mm Cush Core presta air valves, valve core tool, installation instructions, and rim stickers | Cushcore | Tire Insert Kit Trail 27. 5" 27. 5" Trail Insert Kit