CushCore Trail Tire Inserts Bicycle Tubeless Conversion Kit 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. Designed for tubeless setups and conversion kits, this high-performance tire insert enhances traction and confidence by allowing lower tire pressures without sacrificing rim protection. The foam core cushions hits, dampens vibration, and supports the bead and sidewall to reduce the risk of rim damage and pinch flats—so you can corner harder, descend smoother, and ride longer with less fatigue. Lightweight, durable, and engineered for consistent performance, it integrates seamlessly into your tubeless system for improved handling and overall ride quality. Whether you're seeking better impact protection, vibration damping, or increased lateral stability, this insert delivers a noticeable upgrade to control, comfort, and speed.