Cush Core Mixed Trail Set 29" & 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 | Mixed Trail Set 29" & 27. 5" 29"/27. 5" Mixed Trail Insert Kit