CushCore Plus 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 insert divides the inner volume of the tire in half, maintaining air underneath the tread and the foam insert next to the rim Fits tire widths 2. 6 3. 0" and rims with internal width 32 45mm The system is designed to be