CushCore 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. Features: The system is designed to be used with tubeless-ready or tubeless converted rims and tires, and is compatible with tubeless tire sealants A specially designed tubeless air valve is included with each insert; allowing air to move through the valve without becoming obstructed by the insert The insert divides the inner volume of the tire in half, maintaining air underneath the tread and the foam insert next to the rim Includes (2) 44mm CushCore Presta air valves, valve core tool, installation instructions, and rim stickers Fits tire widths 33mm to 46mm and inner rim widths 19mm to 26mm Inserts reduce rolling resistance which allows for better forward momentum through rough terrain Includes: 2 CushCore Inserts 2 CushCore Tubeless Air Valves 4 Rim Stickers Installation Instructions