The Big Bore Lite from Muc-Off redefines tubeless inflation with a patent-pending, coreless design that delivers rocket-like airflow and zero clogs. With a straight-through bore and an integrated ball-valve lever, you can open up high flow for sealant top-ups or close it for fine-tune pressure on the trail. Made from CNC-machined 7075 aircraft-grade aluminium and backed by a fully serviceable design, this valve is built to last and to get you back out riding faster and smoother.

• Up to 230% higher airflow vs standard Presta valves, thanks to its straight-through design.
• Coreless, lever-operated ball valve: open and close the valve easily for high-speed inflation or micro-adjust pressure mid-ride.
• CNC-machined 7075 aircraft-grade aluminium for strength, durability, and low weight.
• Serviceable design with spanner flats on the body, head, and lever for maintenance and longevity.
• Universal valve head compatible with most screw-on and push-fit pumps.
• Includes a 4-way insert base that works with most tubeless inserts.
• Offered in 45 or 60mm sizes to suit a variety of rim depths.
• Seals & fitments: comes with rubber bases and O-rings to optimise the seal for different rims.
• Leak-resistant construction: stainless steel ball valve with quality seals ensures a reliable seal under