The Fox 36 NA3 Glidecore Air Shaft is the ultimate internal upgrade to unlock maximum plushness from your 2026+ fork. Utilizing advanced Glidecore technology, this replacement air spring drastically reduces friction for buttery-smooth initial travel and consistent mid-stroke support. Whether you are fine-tuning travel or chasing better traction through high-speed chatter, this genuine component ensures your front end stays glued to the trail.