Muc-Off is upping the ante in high air flow tubeless tire systems with a simple mantra: Full bore + No core = insane airflow. Their patent-pending new Big Bore Valves are raising the bar on valve technology yet again with a revolutionary ‘Straight through’ internal design for maximum airflow fire power. The Big Bore Lite and Hybrid Valves offer up to 230% higher air flow than traditional Presta valves. Crafted from aircraft grade CNC-machined aluminum construction with stainless steel, these serviceable valves are built to withstand the toughest rides, whatever the conditions.