CushCore Pro Tire Inserts - 27.5", PairCushCore is an engineered foam insert to be mounted inside a tire, designed to absorb impacts, reduce vibration and increase lateral stability. These characteristics translate to a more controlled, comfortable, and faster ride. The system is designed to be used with tubeless ready or tubeless converted rims and tires, and is compatible with tubeless tire sealants Fits tire widths 2. 1 2. 5" and rims with internal width 22 35mm A specially designed