CushCore Pro Tire Inserts - 27.5"/29", 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. Mixed set contains one 29 and 27. 5" insert Fits tire widths 2. 1 2. 6" and rims with internal width 22 35mm The system is designed to be used with tubeless ready or tubeless converted rims and tires, and is compatible with