To eliminate unwanted sealant clogging, restricted airflow, and a time-consuming setup for tubeless use, Muc-Off designed the Big Bore Tubeless Valves - Lite to offer incredible convenience, ultimate airflow, and minimal hassle. The “Straight-through” internal design features a 3. 3mm internal diameter valve head and an integrated steel ball valve and lever system to provide up to an increase of 230% in airflow compared to a standard Presta valve, simplifying the inflation and sealant filling process and providing an unmatched airflow hit.